just got in from the races and my truck is messing up something bad.thought you guys could help.it was running fine shut it off when i got to the track.went to start it and it started reving up and down may 200 or 300 rpms real quick like 1/2 sec fast.killed it started ran fine for about 5 sec and started doing it agian when it starts the check e light comes on.when i kill it and restart it lights out till it starts doing it agian.any ideas???oh yeah made it home but truck was way down on power to me.the way it was running was like it was fighting itself.
going to sleep. maybe when i wake up it will have fixed itself

 

anyone?/??/

 

Try unplugging the ICP sensor and see what it does.

Check your fuel pressure on the schrader valve on the fuel bowl with an old tire gauge as well.

Check the tin nut on the IPR as well.

 

well unpluged those no change.pressure is 60 @idel.could the throttle pedal cause anything like this?off idel its not as bad and pedal seems to be more sensitive than it has been.unpluges 3 of the 4 plugs on valve cover all 3 had the same effect on the idel.going to the zone to see if they can get the codes that setting the CEL.if not theres a guy with a snapon scanner i'll try and catch later on. after getting this truck and pulling with it yesterday and was really getting to like it more and then this happened

 

Codes always help. If you were closer, I'd give ya a hand. 2 day drive is to far. haha.

 

thanks man

zone said no codes(this as the trucks running with check eng light on)
buddy with snapon scanner got 6 codes
1 was when i run it wide open and oil level got low in high pressure pump
the rest were showing fuel pressure but it did'nt say high or low.
it just showed volts and it was 3.75 i think he told me. now i did the bb thing 10 days ago would that have anything to do with it?

 

can you post the codes i dont think the PCM can see fuel pressure

 

no i did'nt get them.should have wrote them down but we started talking and i forgot.i can run out there tomorrow and rescan it.i wont bother him 2 times on sunday.
just cofuzzing me it mite run fine for a min or 2 and then start doing it agian.off idel its not as bad as it was last night. when i'm driving down the road and let off its like it dies till i hit the pedal agian.

 

Maybe try cleaning the IPR???

 

Did you check the oil in the c case ?

Did you unplug the ICP sensor ?

Look for oil leaking from the sensor.

Did you check the tin nut on the IPR?

 

dont know what this is.i missed that in the earlier post.i took the bb out and it still has the same problem
do you have a picture of this nut?
i'll look real quick and see if i can find it

 

IPR Pic

Its just below the 3 red arrows

his is what it looks like out of the pump


The tin nut is on the back of it , IPR pic ,its on the left end..

 

HPOP rez is on the front. follow it down on the drivers side, you'll see a tin nut. Just see if it is loose

if its loose, you'll have all sorts of weird issues.

 

HPOP rez is on the front. follow it down on the drivers side, you'll see a tin nut. Just see if it is loose

if its loose, you'll have all sorts of weird issues.

 

ok thanks i'll go check it out