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-   -   i need help 6.5 turbo shut off and wont start i have replaced everything (https://www.dieselbombers.com/chevy-gmc-6-2l-6-5l/94097-i-need-help-6-5-turbo-shut-off-wont-start-i-have-replaced-everything.html)

bushwacker 04-10-2012 10:10 AM

Its not getting power but why what else controls it besides the pmd:humm:

great white 04-10-2012 10:20 AM


Originally Posted by bushwacker (Post 881214)
Its not getting power but why what else controls it besides the pmd:humm:

I think he meant fuel shut off solenoid.

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.....

bushwacker 04-10-2012 11:08 AM

My fuel shut off solenoid is working. I'm not getting power to the fuel solenoid the one on the back of the ip

bftrain 04-10-2012 12:46 PM

I was thinking fuel shut off solenoid

bushwacker 04-10-2012 01:19 PM


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

great white 04-10-2012 04:43 PM


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

Fuel solenoid is driven by the PMD. The PMD is triggered by the PCM.

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.

bushwacker 04-10-2012 08:21 PM

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

Pain in the ass chev 03-09-2013 11:38 PM

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.

Jonesw55 09-28-2015 12:53 AM

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:


Jonesw55 09-28-2015 12:58 AM

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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