93 Park Ave. Series 1 3.8.
I know its way too old...
Been having alot of issues with the car misfiring, surging, and not starting. Last night when it would not start at all, I replaced the ignition module, and then it worked. This morning car is surging and misfiring. Codes 18 which is a cam/crank error, and code 42 which is electronic spark timing, keep appearing. I have replaced the wiring harness for the iginition control, the crank sensor, coils, harmonic balancer, and god knows what else. Even put the camshaft magnet in to fix the code 41 years ago.
Had the guys at the shop look at it while I was tinkering about it for those codes, and when I fired it up, they told me my EGR valve was leaking! lo and behold, the mysterious exhaust leak that I have been unable to locate for months! So, I have a plate to block off the EGR rigged up, to see if this helps when I get to the shop in the morning.
My question. will removing the EGR ruin the motor? higher combustion temps? the 92 3.8'* did not have one that I have seen.
Second, has anyone ever had problems with codes 18 or 42?
2009 Pontiac Vibe AWD 2.4
1993 Buick Park Avenue 3800
1984 Chevrolet Citation 2.5 liter four.