89 IROC Z Running issue - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

carguy68ssrs · 08-21-2012, 12:00 PM

Working on this car and it will not start on its own.
Squirt gas into intake and it will fire and run and idle fine.
It will idle for as long as you leave it alone,but if you move the throttle to rev it it dies within probably 20 seconds.
Fuel pressure is where it should be, have no security light coming on neither.
It does rev pretty good but will not stay running after that.
Squirt gas into intake and it will fire right up again. ?????

Hylton · 08-21-2012, 12:29 PM

Try changing the throttle positioning sensor. It's that black plastic switch on the left side of the throttle plate. About $20 bucks.

steveo9043 · 08-21-2012, 12:44 PM

Quote:

Originally Posted by Hylton

Try changing the throttle positioning sensor. It's that black plastic switch on the left side of the throttle plate. About $20 bucks.

had this same issue on my 91 firebird formula. TPS was the cause.

garcmol · 08-21-2012, 01:00 PM

Do you have a chiltons or haynes manual? Before you swap out the sensor, check it's voltage while it's idling. You may find you just need to adjust it which is easy to do.

I don't know if this car has been sitting for a while or not as this is your first post. (welcome!)

This link is sort of a walk through on the TPS with some helpful Q & A

http://www.thirdgen.org/techboard/tb...ates-when.html

08-21-2012, 12:00 PM	#1
carguy68ssrs Drives: 68 Camaro SS/RS, 92 RS , 88 IROC Join Date: Aug 2012 Location: Perris Ca Posts: 1	89 IROC Z Running issue Working on this car and it will not start on its own. Squirt gas into intake and it will fire and run and idle fine. It will idle for as long as you leave it alone,but if you move the throttle to rev it it dies within probably 20 seconds. Fuel pressure is where it should be, have no security light coming on neither. It does rev pretty good but will not stay running after that. Squirt gas into intake and it will fire right up again. ?????

08-21-2012, 12:29 PM	#2
Hylton Drives: fanboys and ass kissers crazy. Join Date: May 2008 Location: Ottawa, Ontario Posts: 7,280	Try changing the throttle positioning sensor. It's that black plastic switch on the left side of the throttle plate. About $20 bucks. __________________ "BBOMG - More than just a car show.... It's an experience!"

08-21-2012, 01:00 PM	#4
garcmol Drives: 10 1LT SIM; 91 B4C sleeper Z Join Date: Aug 2009 Location: Ft. Mitchell, Alabama Posts: 7,199	Do you have a chiltons or haynes manual? Before you swap out the sensor, check it's voltage while it's idling. You may find you just need to adjust it which is easy to do. I don't know if this car has been sitting for a while or not as this is your first post. (welcome!) This link is sort of a walk through on the TPS with some helpful Q & A http://www.thirdgen.org/techboard/tb...ates-when.html __________________ Pedders Pace Car Package, Injen CAI, Flowmaster AT, AAC Lighting, ZL1 fascia/skirts, RKSport Ram Air hood, vented fenders, painted stripes (Gary's Customz), Honor and Valor badged (Thank you, John)