help pls!!!
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Elder User
Joined: Jan 2008
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From: indy
help pls!!!
my truck has been acting up lately when first starting like runnin real rough for a while like its gonna shake itself apart but now its like that the whole time i drive i first get in it will start fine and run fine until i go to take off then it bogs down real bad and wants to die and i cant get going very fast - could it be map sensor
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
is it blowing smoke? does it set the CEL? is the exhaust backpressure valve sticking closed? unplug it just to check. if it has the CEL check the codes, if not is it only doing it cold or even after the engine is warm? check the HPOP res. as well. check the oil, fuel filter, and fuel pressure.. maybe try a CPS? just some stuff to check on.. hope this helps
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
oh yeah and unplug the chip and see what happens.. maybe unplug the map sensor and see if it changes. if it doesn't then unplug the ICP sensor and see if it changes. sounds like your running out of oil possibly though.. definitely check your oil level in the pan and the HPOP res!!!!!
Lead Driver
Joined: May 2007
Posts: 8,608
Likes: 13
From: Belair md
oil gauge may be dropping due to extrem low rpm, can you pull codes? if not you can try the map sensor trick, but violently shaking sounds a little different. perhaps a burnt valve cover harness? but the popping from the intake sounds more like a bent pushrod, that kind of fits the basic description you gave.
codes would be a great start, then go fo rthe visual inspections
codes would be a great start, then go fo rthe visual inspections
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Elder User
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From: indy
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Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
that's very strange... maybe the fuel heater could have come loose and is arcing to the side of the fuel bowl, but i'm not sure what that would do, but i do know it can come loose and short out. just dont remember what it does. if you can scan it for codes or get it scanned that would be a good start. it could have saved a code that may lead to your problem?
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Elder User
Joined: Jan 2008
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From: indy
i unhooked my ebpv a long time ago- i leak a lot of oil when its cold and its about single digits here i just checked my oil and it is extremely low but im broke i have it parked of course but will being really low on oil and extremely cold cause this
Lead Driver
Joined: May 2007
Posts: 8,608
Likes: 13
From: Belair md
first problem is low oil, can cause all kinds of drivability issues and an eventual no-start. the leaking line is probably a high pressure line, the cold soak is probably allowing air tin the system and the cold start is showing the air.