What would be causing this.***UPDATE***
07-14-2007, 02:46 PM
#21
IAC was cleaned when it was put back together. I'm going to take it off again and re clean it, and maybe lube it.
I don't like to drive it too much, seeing i still don't know what the A/F is at.
07-14-2007, 05:31 PM
#23
07-15-2007, 06:16 AM
#26
but i will try going for more than a half hour and check it out.
Thanks for the info.
What is the next step up in Fuel pumps from a 255LPH? i wanna stay intank.
Or what should the 255 be good till (HP)
07-15-2007, 06:54 PM
#28
I'd say the idle issue is likely a IAC or T.P. problem, could also be as Nick said, the base idle not properly set. A vacuum leak could also cause this but it should set a code pretty quickly. As for the fuel pump, does the code return immediately? maybe it's just a bad pump and is shorting internally? I'd first confirm no wiring damage/routing problems and then get a new pump under warranty. If you wanna go for a drive you should be fine as long as you drive easy, a lean condition usually shows up in the top end, do you have a code reader or hand-held tuner?
07-15-2007, 08:28 PM
#29
[QUOTE=Ponyryd;83785]
I was thinking IAC also, but now that you mention the T.P problem, i know that i have to snap the throttle to get it to come down after driving it. also push back the throttle when under hood to get it to come down more. but that does not explain why it would go up and down when the fan kicks on.
Vaccum sits at -16 at idle.
no it does not come back on right away. i would say 3-5 minutes before it returns.
I'd say the idle issue is likely a IAC or T.P. problem, could also be as Nick said, the base idle not properly set.
A vacuum leak could also cause this but it should set a code pretty quickly.
As for the fuel pump, does the code return immediately? maybe it's just a bad pump and is shorting internally? I'd first confirm no wiring damage/routing problems and then get a new pump under warranty.
If you wanna go for a drive you should be fine as long as you drive easy, a lean condition usually shows up in the top end, do you have a code reader or hand-held tuner?
07-15-2007, 10:30 PM
#30
The fuel pump voltage on returnless cars are controled by duty cycle (via fpdm) and if the pump is not compatible the pump will draw more current shuting the fpdm down..setting the 1232 dtc...its not the fuel pump size thats the problem.You need to fix this issue first...
