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i need help 6.5 turbo shut off and wont start i have replaced everything
ok guys im new so go easy if i do somthing wrong. I have a 94 2500 6.5 turbo ive only had it about 8 weeks the other day while driving it shut off like it was out of fuel i read alot about the pmds i looked all through the form and was convinced it was the pmd so i bought a brand new one itstalled it and still wouldnt start im not tha type to just replace things till i find the problem but being i didnt know the history on the truck and read the form i was sure the pmd was it so after it still didnt start i read more and more i tested everything according to the form and couldnt find no problems so i was convinced it was the ip i pulled it off and discoverd i had a odd ball ip 5068 so i send it to pensacola fuel injection and had it rebuilt got it back and installed it and it still wouldnt start then i was sick and puzzled so i read more oh i had the codes read before i started and it showed 13 so i figuredi was over looking somthing so i looked again and did more checks and couldnt find any thing so i replaced the crank sensor still nothing so a few people i talked to convinced me it was the ecm they said that was all that was left well i bought a rebuilt 1 installed it same thing want start so i lost yes its got fuel i even added 10 gal before i repalced any thing to make sure that wasnt the problem lift pump is working i even bypassed the op switch still nothing it just spins and spins has plenty of commpression and isnt making any strange noises im getting fuel to the ip but nothing out of it i checked the old pump before i removed it and the new pump no fuel comming out i checked return lines there free flowing do you guys think maybe the prom is bad because the new ecm didnt have a prom and i had to install mine? i found where someone said the green wire going to the pmd should have 1.2vdc while cranking this is the signal wire mine only has 0.4 while turning over i checked it at the connector and the ecm it didnt change what would be causeing this and could this be my problem why theres no fuel comming out the ip please guys i need help im out of cash and have no wheels sorry for all qustions do any of you have any suggestions of what it could be or any thing else to check its hade me puzzled for 3 weeks now im gonna keep working on it but i dont know what else to do:humm: ill keep yall posted if i get her back going and also what the final issue ends up being if i find it :argh:
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so..... the fuel pump works? your getting fuel? its kinda jumbled make it simple.
is there fuel to the filter? can you hear the lift pump run? can you smell diesel? PM me if you would like too |
Thanks for the reply yes it's got fuel to the filter and IP the lift pump is working I even strait wired it and let it run constant while trying to start it I even checked the pressure at the tee valve and its good I don't smell fuel its not getting fuel to the injectors
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I don't want to sound like your grammar teacher, but you're going to have to rewrite your first blurb with some punctuation and paragraphs.
I just couldn't read it. :s: I got a couple blurbs that might indicate a few things, but you really need to rewrite that and organize it a bit. One thing I did pick out was that you changed the IP. Did the new pump come with a new PMD or have you installed a new one yet? *edit* Nevermind, it was so confusing in the middle I completely lost that you had already installed a new PMD..... |
let me start by saying it just shut off while driving down the road and want start back. I have replaced the ip its a rebuilt one with a new pdm.I installed a new crank sensor. I installed a reman ecm. It turns over good has good compression but want start. I checked fuel pressure @ the tee fitting and its good i even strait wired the lift pump i let it run constant while trying to start it. Its getting good fuel to the ip but none coming out of the ip. On the harness going to the ip the red wire has 5.5dc the pink wire has 12.30 the lt green pin c is a ground and the lt green pin a only has 0.3 while cranking it. The new ecm i installed didn't come with the prom i used my old prom. I have checked all the fuses and all the connectors and inspected the harness what am i missing please help. The truck is a 94 2500 6.5 turbo with auto 4x4 with 160,000 its all stock as far as i know i've only had it about 8 weeks it ran great no issues till last week when it shut off it was like it run out of fuel no strange nosies or nothing it just shut off and i've even put more fuel in to double check that the gauge is working i dont no what else to do :s: i think i've done replaced everything well everything except what is wrong with it. Thanks again for yalls help and i'll keep you posted with what i find.
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Originally Posted by bushwacker
(Post 880216)
let me start by saying it just shut off while driving down the road and want start back. I have replaced the ip its a rebuilt one with a new pdm.I installed a new crank sensor. I installed a reman ecm. It turns over good has good compression but want start. I checked fuel pressure @ the tee fitting and its good i even strait wired the lift pump i let it run constant while trying to start it. Its getting good fuel to the ip but none coming out of the ip. On the harness going to the ip the red wire has 5.5dc the pink wire has 12.30 the lt green pin c is a ground and the lt green pin a only has 0.3 while cranking it. The new ecm i installed didn't come with the prom i used my old prom. I have checked all the fuses and all the connectors and inspected the harness what am i missing please help. The truck is a 94 2500 6.5 turbo with auto 4x4 with 160,000 its all stock as far as i know i've only had it about 8 weeks it ran great no issues till last week when it shut off it was like it run out of fuel no strange nosies or nothing it just shut off and i've even put more fuel in to double check that the gauge is working i dont no what else to do :s: i think i've done replaced everything well everything except what is wrong with it. Thanks again for yalls help and i'll keep you posted with what i find.
Well, since you've already changed everything expensive, I've only got two suggestions for you; 1. clean the PCM ground on the passenger rear side of the manifold: http://i40.photobucket.com/albums/e2...P02017gnds.jpg High resistance here can cause the symptoms you describe. Clean teh other grounds as well 2. Ignition switch. These deteriorate over time and cause all kinds of weird issues. That's about all I've got. Boy, are you going to be some mad if you clean the grounds and it starts! :scare2: I would be if that fixed it after spending all that dough.......:argh: |
Great white thanks for the reply tomorrow i'll check the grounds but off the top of my head i dont think there is a ground there. I know there is a main ground on the driver side front of the intake. I hope thats my problem but somone has put new heads on the truck in the past they may didnt hook the grounds back up in that location. I will find them in the morning if there not there and move them and be sure there grounded good. The ignition switch has been changed at some point also. I noticed that it has a black harness comming from it and plugged up under the dash as if it was a late model with the dieod in the switch but the keys are just plain keys. The keys had been working fine do you think they could be my prolem does a 94 have the theft key? I'm betting its a ground after seeing that pic. I'm about sure the grounds arnt there. Well im going to be mad if thats the problem after spending all the cash but I will be glad to have my truck back going and least i'll know a what parts have been replaced if i have trouble in the future i'll keep you posted tomorrow with what i find i want to get a flash light and go see about her now :humm: i want be able to sleep tonight thinking about it. Well thats nothing new i havnt slep all week trying to figure it out.:s: Thanks again
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Those grounds need to be connected. Among other things, it provides the ground for the PCM.
The PCM ground resistance must be minimal since the signals need to be clean for proper operation. If those grounds aren't connected, the PCM will have to try and ground through another component which makes the signal "dirty" and can cause all kinds of problems. You may or may not have a vtd called "passlock". I'm not sure if it came as early as 94. You'd have a dash light "security" lit up if it was your problem. It would also light up when you turn the key and the cluster does it "bulb check" at first start if your truck has it. It's a pita system. Prone to failure, it will let the truck start and kills the engine a few seconds later. There is no "chipped" key. There's a signal sent from the column cylinder when it's turned and the PCM looks for this signal. It's so stupid and pointless it can be fooled with a simple resistor. It's also a really stupid system because all a thief has to do is jamb a screwdriver in the key slot and force the cylinder to turn. The truck will start and run fine. About all the passlock system is good for is frigging up and screwing the legitimate owner over when it fails. And it will fail........they all do eventually. Either the cylinder or the passlock module. I always turn the pita system off when I reflash a PCM.....unless the guy specifically requests it be left on. Sent from my iPhone using Tapatalk |
I checked the grounds they where bolted to the back of the head i cleaned them good but still no fuel. I only have one black wire coming out of the harness that you said where the ecm grounds i checked everywhere and i cant find another one. I also cleaned all the other grounds good. What am i over looking i have never had a truck beat me up like this. I got good fuel pressure to the ip but nothing coming out im not getting power to the fuel solenoid on the back of the ip. Even if it was out of time fuel should still come out of the ip right? or no? Please guys i need help what am i missing ive checked everthing i know and replaced everything :argh::argh: what am i over looking?
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did you say you are not getting power to the fuel solenoid? That is the problem if it is not getting energized. Nothing will come out of the injection pump if that is off.
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Its not getting power but why what else controls it besides the pmd:humm:
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Originally Posted by bushwacker
(Post 881214)
Its not getting power but why what else controls it besides the pmd:humm:
http://flashoffroad.com/Diesel/injec...s/DSC04260.jpg It's powered open by 12v acc power. It's not a common fault area, but it does happen. I've replaced one on mine. You can test it out by removing the pintle on the end of the solenoid and screwing it back in. If It runs, the solenoid is the problem... If it's not getting power, you've got a popped fuse or an "open" somewhere..... |
My fuel shut off solenoid is working. I'm not getting power to the fuel solenoid the one on the back of the ip
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I was thinking fuel shut off solenoid
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Originally Posted by bftrain
(Post 881277)
I was thinking fuel shut off solenoid
OK thanks for your help the shut off solenoid is good. But for some reason the fuel solenoid isn't getting power I can't figure it out I've checked everything and damn near replaced everything there's something somewhere else besides the pmd that runs it I guess but I can't put my finger on it I've done about give up I don't know what else to do or check I just ordered a GM service manual off eBay I hope it arrives quick I'm gonna go over every circuit till I find it. But I'm still open for any suggestions I let you guys know what it ends up be if I find it.:s: Thanks for all the help guys |
Originally Posted by bushwacker
(Post 879947)
Ok guys im new so go easy if i do something wrong.
I have a 94 2500 6.5 turbo I've only had it about 8 weeks the other day while driving it shut off like it was out of fuel. I read a lot about the pmds I looked all through the form and was convinced it was the pmd so i bought a brand new one installed it and still wouldn't start. I'm not the type to just replace things till i find the problem but being i didn't know the history on the truck and read the form i was sure the pmd was it. So after it still didn't start i read more and more i tested everything according to the form and couldn't find no problems. So i was convinced it was the ip. i pulled it off and discovered i had a odd ball ip 5068. So i send it to pensacola fuel injection and had it rebuilt got it back and installed it and it still wouldn't start. Then i was sick and puzzled so i read more. Oh i had the codes read before i started and it showed 13. So i figured i was over looking something. So i looked again and did more checks and couldn't find any thing. So i replaced the crank sensor still nothing. So a few people i talked to convinced me it was the ecm. they said that was all that was left. well i bought a rebuilt 1 installed it same thing want start so i lost. Yes its got fuel i even added 10 gal before i replaced any thing to make sure that wasn't the problem. Lift pump is working i even bypassed the op switch. Still nothing it just spins and spins has plenty of compression and isn't making any strange noises. I'm getting fuel to the ip but nothing out of it. I checked the old pump before i removed it and the new pump no fuel coming out. I checked return lines, there free flowing. Do you guys think maybe the prom is bad because the new ecm didn't have a prom and i had to install mine? I found where someone said the green wire going to the pmd should have 1.2vdc while cranking this is the signal wire. Mine only has 0.4 while turning over i checked it at the connector and the ecm. It didn't change what would be causing this and could this be my problem why there's no fuel comming out the ip? Please guys i need help im out of cash and have no wheels. Sorry for all questions do any of you have any suggestions of what it could be or any thing else to check? Its had me puzzled for 3 weeks now. I'm gonna keep working on it but i don't know what else to do:humm: I'll keep yall posted if i get her back going and also what the final issue ends up being if i find it :argh:
Originally Posted by bushwacker
(Post 881288)
OK thanks for your help the shut off solenoid is good.
But for some reason the fuel solenoid isn't getting power I can't figure it out. I've checked everything and damn near replaced everything there's something somewhere else besides the pmd that runs it. I guess but I can't put my finger on it I've done about give up. I don't know what else to do or check I just ordered a GM service manual off eBay, I hope it arrives quick. I'm gonna go over every circuit till I find it. But I'm still open for any suggestions I let you guys know what it ends up be if I find it.:s: Thanks for all the help guys You have a pmd issue if the fuel solenoid isn't being driven, or it's not being triggered by the PCM. You said the truck is "messed up". Is the ground still present on the top of the IP? Is the PMD on an extension cable? Home made ones or low quality have been known to fail. Meter the wires if the truck has a cable on it. Sorry, had to break up that writing mess. Couldn't make heads or tails of it every time I went back to read it. Nothing personal. |
OK first I bought the pmd when the truck shut off and wouldn't start back. I checked for fuel nothing from IP. I did install a extension harness and heat sink when I installed the new pmd. I checked the extension harness it was good So I ordered a reman ip. I put the new reman IP on nothing still not getting fuel to the injectors. That's when I really went to digging deep checking everything and I realized I wasn't getting power too the fuel solenoid. That lead me to think the cps wasn't sending a signal to the pcm to tell the pmd to work. I installed a new cps same thing no power to fuel solenoid. I checked everything again the only thing I found is the green wire going to pmd (pin A) has 0.3vdc when cranking. I read that it should have 1.2vdc. I checked it at the pcm no difference. I thought there's my problem so I bought a reman pcm installed it same thing I'm still not getting a signal to the fuel solenoid. I have 2 new pmd's when I bought the new IP it came with a new pmd. I have tried all 3 pmd's the 2 new ones and the original. I even tried them without the new harness and heatsink . The only thing I haven't replaced is the prom I had to install the original prom in the new pcm. I thought about just ordering a performance chip then the prom would be new. Any ideas do you think it could be the prom. Thanks again guys for tha help I'm about to pull my hair out.:argh:
---AutoMerged DoublePost--- Great White do you understand that last post. Let me know if it don't make sense or if I'm confusing you but I'm lost and need help Thanks again I'll keep my finding posted. Do you think I could have got 2 bad pmd's. I really felt that was my original problem was pmd went bad. ---AutoMerged DoublePost--- Question should my codes start with 12? I checked the codes again and got 13,14,19,48,62&73 Im pretty sure the codes are there because of me testing (unhooking and cranking ) checking voltages ect. But I'm not getting code 12 and I read that if the pcm,ecm is working correctly and communicating that the codes should start and end with code 12? Is this correct or Will it only show 12 when there is no codes present? Thanks again |
Did you ever get the truck going and what did you do. Can't get mine started and is going to make me start drinking lol. The truck has in order of replacement and all are new. Pmd $450 crank sensor $129 timing chain and gears,$278 injection pump $1899 remove all grounds and cleaned with sand paper and contact cleaner please help.
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Having same issue did you ever get it to start
z did you ever get it to start
Originally Posted by bushwacker
(Post 879947)
ok guys im new so go easy if i do somthing wrong. I have a 94 2500 6.5 turbo ive only had it about 8 weeks the other day while driving it shut off like it was out of fuel i read alot about the pmds i looked all through the form and was convinced it was the pmd so i bought a brand new one itstalled it and still wouldnt start im not tha type to just replace things till i find the problem but being i didnt know the history on the truck and read the form i was sure the pmd was it so after it still didnt start i read more and more i tested everything according to the form and couldnt find no problems so i was convinced it was the ip i pulled it off and discoverd i had a odd ball ip 5068 so i send it to pensacola fuel injection and had it rebuilt got it back and installed it and it still wouldnt start then i was sick and puzzled so i read more oh i had the codes read before i started and it showed 13 so i figuredi was over looking somthing so i looked again and did more checks and couldnt find any thing so i replaced the crank sensor still nothing so a few people i talked to convinced me it was the ecm they said that was all that was left well i bought a rebuilt 1 installed it same thing want start so i lost yes its got fuel i even added 10 gal before i repalced any thing to make sure that wasnt the problem lift pump is working i even bypassed the op switch still nothing it just spins and spins has plenty of commpression and isnt making any strange noises im getting fuel to the ip but nothing out of it i checked the old pump before i removed it and the new pump no fuel comming out i checked return lines there free flowing do you guys think maybe the prom is bad because the new ecm didnt have a prom and i had to install mine? i found where someone said the green wire going to the pmd should have 1.2vdc while cranking this is the signal wire mine only has 0.4 while turning over i checked it at the connector and the ecm it didnt change what would be causeing this and could this be my problem why theres no fuel comming out the ip please guys i need help im out of cash and have no wheels sorry for all qustions do any of you have any suggestions of what it could be or any thing else to check its hade me puzzled for 3 weeks now im gonna keep working on it but i dont know what else to do:humm: ill keep yall posted if i get her back going and also what the final issue ends up being if i find it :argh:
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Having the same issue did you ever get yours to start I need to know help help help
I'm having exams at issue that you are and it's driving me mad I'm thinking about burning the truck up did you finally get your started if so let me know what you did because I'm pulling my hair out I love my truck and I wanted to get going thank you please reply as soon as possible
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Did you check the fuel shut off solenoid? Do some searching on that. Make sure it is working. Make sure you have the ground to the top of the injection pump.
When you changed the PMD, did you get an extension and harness? Have you tried a known to be good / tested PMD - You should have got one with your injection pump. Check the condition of your engine harness. I've been ordering them and switching the engine harnesses out on all of my 6.5's as I go. Check Glagulator on dieselplace.com for an engine harness. I had a similar problem to yours a couple of Decembers ago Check my threads here and at dieselplace.com for diagnostic links. Did you try to run the engine with the return line at the front of the IP run to a container? Do the battery bolt mod. I use and Allen screw. Be sure to flatten the end of the screw or you may not have enough threads to eliminate the stripping problem in the side post mount. Find my thread on adding grounds and add them - especially the ground to the battery box - you have to remove the battery to get to the bolt. And the added ground from the Heater blower to the dash mount bolt - just inches away. On a 1994 you will also want to do the dual lift pump relay upgrade - DO NOT CUT AND SPLICE any wires. Do it the way leroydiesel.com does his, if you make your own. Make it a plug and play harness. Run from the original plug that goes to the lift pump back to the relay for a trigger. Then from the relays to the lift pump to run it. Hate to tell you to spend more money but I consider the grounds and the lift pump relays, must do's on a 1994 |
Originally Posted by Jonesw55
(Post 1099532)
I'm having exams at issue that you are and it's driving me mad I'm thinking about burning the truck up did you finally get your started if so let me know what you did because I'm pulling my hair out I love my truck and I wanted to get going thank you please reply as soon as possible
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Did you replace the ignition switch yet?
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Looks to be an older post with multiple people piling on same issue, might I suggest you start your own thread it is easier for folks that may be searching later, plus easier to keep troubleshooting specific to your vehicles situation.
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