Need Help...car Running bad
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Joined: Oct 2003
Posts: 193
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From: ohio
Car: 1992 camaro rs
Engine: 305 TBI
Transmission: 700r4
Need Help...car Running bad
Ok My car just started this 3 days ago and it runs like complete crap and i have done everything to fix it and nothing has worked...and i need her cuz she is my everyday driver.....This is my Problem.....As soon as she warms up for a min or 2 the idle goes to all hell.....It will sit right about 650 then it starts to sound like its missin real bad and it will drop below 500 and sound like its about to stall out and the computer corrects it and sends the revs back up to about 1k and it idles back to 650 and repeats its self...it does this while driving too...u can be goin 35 steady and it start to miss bad, rpms drop way down and then shoot way back up to where they were...and it will do it non stop constantly.....Now if it starts doing this and u floor it....it takes off like a bat outta hell...it will not have this problem if u put it under a heavy load.....
Im not getting an SES light....i have changed the following.....New cap,rotor,plugs,wires,coil, Module, distributor, Yes the timing is right and i unplugged the ESt when i did it...the gap on the plugs are correct also....Replaced IAC,MAP,TPS, Fuel filter, EGR,CTS...basically most the sensors and a fulll tune up....and it has not fixed this....i did find a very tiny vaccum leak and replaced the hose but it did not fix my problem......I have been thinkin fuel pump but it does make sense that it runs sweet when its under full throttle....someone please chime in
Im not getting an SES light....i have changed the following.....New cap,rotor,plugs,wires,coil, Module, distributor, Yes the timing is right and i unplugged the ESt when i did it...the gap on the plugs are correct also....Replaced IAC,MAP,TPS, Fuel filter, EGR,CTS...basically most the sensors and a fulll tune up....and it has not fixed this....i did find a very tiny vaccum leak and replaced the hose but it did not fix my problem......I have been thinkin fuel pump but it does make sense that it runs sweet when its under full throttle....someone please chime in
Joined: Feb 2001
Posts: 13,752
Likes: 560
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
it sounds like you have a closed loop problem. Did you change the O2 sensor? Having the car run perfect at WOT leads me to believe that may be your culprit.
Thread Starter
Member
Joined: Oct 2003
Posts: 193
Likes: 0
From: ohio
Car: 1992 camaro rs
Engine: 305 TBI
Transmission: 700r4
Wow ur one smart man shifty.. spent tons of money on replacing everything guess what happened....I went to check the Oxygen sensor like u said shifty....Well i have an A/F guage and the Wire running from the Sensor to the Guage had come out of the connector and was groundin out on the car....hooked it back up and shrink wraped it and now it runs perfectly
Joined: Feb 2001
Posts: 13,752
Likes: 560
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by Red25thRS
Wow ur one smart man shifty.. spent tons of money on replacing everything guess what happened....I went to check the Oxygen sensor like u said shifty....Well i have an A/F guage and the Wire running from the Sensor to the Guage had come out of the connector and was groundin out on the car....hooked it back up and shrink wraped it and now it runs perfectly
Wow ur one smart man shifty.. spent tons of money on replacing everything guess what happened....I went to check the Oxygen sensor like u said shifty....Well i have an A/F guage and the Wire running from the Sensor to the Guage had come out of the connector and was groundin out on the car....hooked it back up and shrink wraped it and now it runs perfectly
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