car won't idle
Thread Starter
Member
Joined: Jun 2000
Posts: 312
Likes: 0
From: umatilla county, or.
Car: 1992 Camaro Z28
Engine: 1995 Camaro LT1
Transmission: 700R4
car won't idle
I have a 92 Z28. It is a 5.0 T.P.I.. It will run fine if i am moving or am pushing the accelerator. It still performs like usual. It will usually idle at 750, but is choosing to go to 500 or less. It will run at 500, but if I park it will die. It also will not start without holding the accelerator. I replaced the computor 6 months ago. (new, not used) I also replaced the fuel filter at that time. Any suggestions? 
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'92 Z28,t-top,PPG jet black,5.0L TPI,Auto w/stage 2 sft. kit,
Z rated tires,polished plenum/intake,flow tech 3" exhaust,PIAA driving lights
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'92 Z28,t-top,PPG jet black,5.0L TPI,Auto w/stage 2 sft. kit,
Z rated tires,polished plenum/intake,flow tech 3" exhaust,PIAA driving lights
Junior Member
Joined: Mar 2001
Posts: 66
Likes: 0
From: Perry, GA
Sinner,
Has the car thrown any DTCs? Make sure your TPS is adjusted correctly. I was having a similar problem in that the car didn't want to run smoothly (or at all, sometimes!)below 1000 rpm. Mine was a MAF power relay (driver's side of the firewall, right next to the master cylinder), but this would throw a code "34" at you. Check for any vacuum leaks around the intake, runners, plenum, throttle body, & air ducting from air filters to the t.b.. Check that the PCV valve is functioning properly. Same for the EGR valve. Ensure that there are no leaks around your rocker covers, as this will also screw with the vacuum. Check your timing, and adjust if needed. Remember to disconnect the EST bypass plug near the passenger side firewall (near the a/c evaporator). Hope this provides some help, & let us know how things are going.
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'87 IROC Z28
TPI 305
5-speed w/ Centerforce clutch
3 1/2" exhaust w/ Flowmaster
Clarion, Kenwood, Eclipse, Polk, MTX, Autotek 800 watt stereo system
Grant wheel
Otherwise stock, & good for a 14.68 at DeSoto Dragstrip
More to come soon...
Shooting for high 13's with bolt-on's
Has the car thrown any DTCs? Make sure your TPS is adjusted correctly. I was having a similar problem in that the car didn't want to run smoothly (or at all, sometimes!)below 1000 rpm. Mine was a MAF power relay (driver's side of the firewall, right next to the master cylinder), but this would throw a code "34" at you. Check for any vacuum leaks around the intake, runners, plenum, throttle body, & air ducting from air filters to the t.b.. Check that the PCV valve is functioning properly. Same for the EGR valve. Ensure that there are no leaks around your rocker covers, as this will also screw with the vacuum. Check your timing, and adjust if needed. Remember to disconnect the EST bypass plug near the passenger side firewall (near the a/c evaporator). Hope this provides some help, & let us know how things are going.
------------------
'87 IROC Z28
TPI 305
5-speed w/ Centerforce clutch
3 1/2" exhaust w/ Flowmaster
Clarion, Kenwood, Eclipse, Polk, MTX, Autotek 800 watt stereo system
Grant wheel
Otherwise stock, & good for a 14.68 at DeSoto Dragstrip
More to come soon...
Shooting for high 13's with bolt-on's
Member
Joined: Feb 2001
Posts: 180
Likes: 0
From: Barnegat, New Jersey, USA
replace your MAP sensor (manifold air pressure) i had the same problem. it is about forty bucks at a part store
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Steve
88 Firebird TBI,TH700R4 - Open Element, Cat Delete, K&N filter 14*4 element, Dynomax Catback Exhaust, 160 Stant thermostat
1/4: 16.1@85.7 (Bone Stock)
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Steve
88 Firebird TBI,TH700R4 - Open Element, Cat Delete, K&N filter 14*4 element, Dynomax Catback Exhaust, 160 Stant thermostat
1/4: 16.1@85.7 (Bone Stock)
Thread Starter
Member
Joined: Jun 2000
Posts: 312
Likes: 0
From: umatilla county, or.
Car: 1992 Camaro Z28
Engine: 1995 Camaro LT1
Transmission: 700R4
It did this sunday, monday, and part of tuesday. i just left work and now it is fine. does this help you help me? i am so frustrated. 
------------------
'92 Z28,t-top,PPG jet black,5.0L TPI,Auto w/stage 2 sft. kit,
Z rated tires,polished plenum/intake,flow tech 3" exhaust,PIAA driving lights
------------------
'92 Z28,t-top,PPG jet black,5.0L TPI,Auto w/stage 2 sft. kit,
Z rated tires,polished plenum/intake,flow tech 3" exhaust,PIAA driving lights
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