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sweet thanks so much man it been a really shitty month took a diff and a tranny out of my kenworth and now this getting ready to get out of trucks all together haha alright ill get back to ya tomorrow thanks again
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Nice sounds like fun haha... But yeah your MAP should create an electric pulse when actuated.
---AutoMerged DoublePost--- Heres some more backround info on the MAP sensor http://www.autoshop101.com/forms/h35.pdf |
Originally Posted by ChavensTrucking
(Post 957275)
I have a 2004 dodge 6spd 2500. truck threw a P2121 Pedal Position Sensor 1 Performance / Rationality and P0628 fuel lift pump circuit voltage low. starting a couple months ago very very rarely and only when i was really pushing the truck it would just go into limp mode pedal completely dead but after a few seconds it would come back and we were off again. it hasn't done it in over a month but tonight i went to town to pick up my harley and while sitting at a light idling it almost just choked out and died on me came back to life and i went on my way after loading the bike and heading home about halfway there it went into limp mode on me coming out of it every now and then i could keep my speed at about 60 mph but really didn't wanna go any harder when it came back on i would have full power again but only for a second and every time i would stop it sounded like it was running out of fuel but never did die on me then when i got home it idled while i unloaded the bike parked the trailer and as i pulled in to park it it died i tried to start it again and it cranked for about 20 seconds then started only running for about 3 seconds and died again after that it wouldn't start again now i really don't know which problem to chase cause on one side it sounds like the APPS sensor but on the other hand it sounds like the lift pump and that truck still has the pump in the tank which i have been told are garbage and the P0628 DTC has been on there for years but had it checked out and was told it was fine any help would be very appreciated
---AutoMerged DoublePost--- oh and when clutch is or out of gear truck will always rev up fine seems like it would only go dead when completely idling or under load |
Hey now mine runs like a charm.
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well i replaced the lift pump put a new fass system in it and its running good starts right up maybe cranks three times and fires the problem now is its lacking alot of power with a smarty on level 9 and the fass system it should blow some smoke and im gett very minimal smoke never getting dead pedal or anything and she has lots of jam just not as much as before im think that it still could be the map sensor the lift pump was deffinatly a problem and the combination of the 2 made it horrible do think the map sensor could still be my problem?
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What size fass did you get and how cranked up is it? My guess is you have it pushing to much fuel.
---AutoMerged DoublePost--- Or better yet maybe its not high enough especially if your running it at level 9, which is pretty high for a stock truck i would invest in a boost gauge. Wish you had a fuel pressure gauge it would definitely be a means to getting an idea of whats going on when you punch it. You may need to adjust that lift pump sounds like you may have got rid of the problem. I would try running it without the smarty once. And start tuning on that lift pump. My guess is due to lack of smoke especially with the smarty on that its not getting enough fuel and your just draining it... which be careful about mind you because you can do alot of damage running your fuel pressure low. |
i got the 150 but i didn't know you even could tune it just thought it was a throw it on and go deal i got a boost gauge i build 34 lbs no problem my pyro is running bang on and im gonna get a fuel pressure gauge asap just running low on funds. but she definitely feels like she is starving for fuel
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Oh yours might not be usually they say if they have an adjustable regulator. Regardless you may have another problem on hand.
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