1992 Camaro RS TBI (L03) timing issues
#1
Junior Member
Thread Starter
1992 Camaro RS TBI (L03) timing issues
picked up a 92 RS for free the other day. car had no power, and i discovered the timing bypass was disconnected. plugged it back in and now it runs like crap and starts revving up and down and then stalls at idle. i put a timing light on it and it was bouncing all over the place. so i pull the ESC bypass wire again, and it stabilizes and runs smooth.
i have replaced the ESC Module and also the ICM. and i just ordered a new knock sensor. is there anything else besides those three components that could cause this problem? also found a lot of other problems with this car. turns out that free isn't always a good thing.
i have replaced the ESC Module and also the ICM. and i just ordered a new knock sensor. is there anything else besides those three components that could cause this problem? also found a lot of other problems with this car. turns out that free isn't always a good thing.
#2
Moderator
iTrader: (14)
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 43,169
Likes: 0
Received 35 Likes
on
34 Posts
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The wire is supposed to be disconnected when you set the "base" timing with the distributor. Do you know where it was set to? The timing can move around after you reconnect the wire, but it shouldn't "bounce" around.
Is the check engine light coming on? I'm guessing it is. If so, check what codes the computer has stored. https://www.thirdgen.org/service-eng...ht-error-codes
That's a good place to start looking.
Is the check engine light coming on? I'm guessing it is. If so, check what codes the computer has stored. https://www.thirdgen.org/service-eng...ht-error-codes
That's a good place to start looking.
#3
Re: 1992 Camaro RS TBI (L03) timing issues
Need to check and set timing with a timing light first . Then turn off car , plug est wire back In and then start car. Then turn car off and clear the est code 42 by disconnectin neg battery cable for a couple of minutes
#5
Junior Member
Thread Starter
Re: 1992 Camaro RS TBI (L03) timing issues
timing was checked with bypass wire unplugged. timing is set right and engine runs smooth. when wire is plugged back in, timing starts jumping around and engine stalls. replaced coil, EST, and ignition module already. ordered a new knock sensor to see if that fixes the problem. also noticed i have a few things unplugged. missing the air temp sensor because the air filter housing is aftermarket. also found a wire hanging on the passenger side behind the block, but can't tell what goes there. it comes out of the main big harness, but is too short to reach the top of the block or anywhere under the headers. it's a two wire connector with blue and either tan or white .
Thread
Thread Starter
Forum
Replies
Last Post
db057
TBI
10
08-11-2015 10:11 PM
42, 88, 89, air, camaro, code, engine, enginelighttiming, gen, lighttiming, problem, problems, sensor, tbi, temperature