meuhus

i have a 91 w/3.1 the other day i was driving about 45 mph
then opened it to about 100 mph after that i started slowing down
the car started sputtering and i could not excelerate any more.
pulled over.
the car was idling very rough and kind of smelled like raw fuel but no smoke or anything like that.
went to take off again and didn't have any power
the fastest i could go was about 10 mph
did get any codes until i drove for about 10 miles
got a 13 and a 22

the car has 220,000 it was running decent before this incident
does any body have any suggestions

i dont think it is a vac leek checked for that
fuel pump is only 2 years old (30,000 miles)
new plenum gaskets.
getting fuel to rail and injectors
the injectors that i can get to with the manifold together seem to be working
i cleared the ecm of codes now and car still runs bad and same results
i removed catilytic converter didn't change anything
replaced tps, iac,
nothing changes the situation

tblake

ok, code 13 is an oxygen sensor signal fault, and code 22 means that the throttle position sensor voltage is too low, or the fuel cutoff relay circuit is open or shorted to ground. I would probably first check all the wires and make sure they arent melted to anything, espeacially that O2 sensor wire being really close to the exhaust manuifold. If they all look good, first start by replacing the O2 sensor, and then if its not "all better" check out the throttle position sensor, you can do an ohms sweep on this. check for any resistance dropouts or spikes. Hope this helps. Good luck.

__________________
2000 Pontiac Grand Prix GTP
(3.4" Pulley, DHP 1.5 Powertuned PCM, ZZP 2.5" High Flow Downpipe, MMS Ported and Polished Lower Intake Manifold, ZZP Stage 1 Ported Throttle Body, 180° Thermostat, NGK Iridium TR6IX)




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meuhus

i have change the tps in the recent past
switched it back out with original one
didn't help
wire looks good to o2 sensor
took off valve cover valves seem to be ok
not getting any more codes sence i cleared them and don't want
to risk driving it till they show up
could it of jumped timing?
the timing chain seems to have some play
about 1/2 of inch
if turning over crank pulley with a 1/2 drive2ft ratchet
would a injector stuck open cause this

some one said something about being able to test an ecm
i would like to have mine tested just for the hell of it
but know one i know can do it
if there was know vac to map
would this becausing my problem
seems like every were i look it turns up ok
or ignition modual
i took it out and going to have it tested (autozone can do that)
if the map sensor was bad would it always set a code it the computer?
what about the cut off relay is that the same as the fuel pump relay?
also i did remove the trans electrical conector to unhook the tcc
didn't help

meuhus

fixed it
bad injector
thanks all