no codes in the ECU.
ummm... I didn't check the tps voltage - i'll try that today.
thanks!
-Chuck
Ray Ayala wrote:
Have you checked the ECU codes and the TPS voltage (as a function of
throttle position) ?
----- Original Message -----
*From:* Chuck Wills <mailto:[EMAIL PROTECTED]>
*To:* Miatapower <mailto:[email protected]>
*Sent:* Wednesday, October 29, 2008 5:26 AM
*Subject:* drivability problem revisited
Hey guys,
I had posted a few months ago about a serious drivability problem
with a buddies 94.
Formerly supercharged - now back to n/a with stock ECU.
It goes very lean at any throttle setting above cruise. It's not
quite lean enough to misfire, but it's off the scale on his NB O2
gauge. It goes lean in any gear, at virtually any RPM above 2000
or so - as soon as you give it any throttle to accelerate.
I've done everything I can to diagnose it, and I'm coming up empty.
verified fuel pressure - 35 idle and 45 WOT.
Swapped ECU
swapped fuel pump (verified pressure on both pumps)
swapped O2 sensor
swapped MAF
allegedly swapped injectors (I didn't do it)
It idles well, and doesn't appear to have a vacuum leak. We also
tried driving it with unplugged TPS and/or unplugged O2, and the
behavior didn't change at all.
Does anyone have any other ideas? bad wiring harness? bad
alignment between mercury and venus?
We're really scratching our heads on this one, because the car
really isn't very drivable.
-Chuck
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