[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: 165 Startup learning?
> Car is hard to start, cranks and cranks finally stumbles to a start.
Idles
> crappy. Tap the gas and it revs up good, try to hold idle still at 2k
wants
> to die. Pump gas again, revs up, hold it, wants to die. Sounds to me it
> wants more fuel and the tap of the gas is like an accel. pump but doesn't
> get enough to maintain idle. So I'm sitting there pumping the gas trying
to
> keep it running while fumbling to get Diacom started. Suddenly, idle
jumps
> up to 1k or so and it will idle on its own!!! CLosed loop mode enable?
Sounds more like dirty sticking IAC.
Don't
> know if this is true, but it seems suspicious that increasing the fuel
> pressure would cause the car to go lean and want more fuel, unless the reg
> is bad.
A fuel pump can just do so much work, you reach a point where cranking the
fuel pressure up drops the volume.
After the key is shut-off the pressure drops instantly by about
> 5-10psi and then decays very slowly to zero after a couple hours. When
> running, if the throttle is cracked the gauge goes wild but will stabilize
> at slightly higher pressure with the slightly wider throttle opening.
----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org