ive been seeing this check engine light on and off now for about 6 months. when it comes on my car stumbles like its misfireing without the misfire. its usually when im below 2k rpm's. then it goes off and i get all my power back. well it started to stay on for long times. i brought it to the shop and they said it was the egr valve. so i got it replaced. well the problem is still thier. and the check engine light is still on. before i go to the shop and spend more money on stuff i don't need. does anyone have any ideas whats wrong with my car

 

what code is it tellin u??( if u dont know a auto parts store should be able to plug it in for u)

 

an autoparts store like autozone ?

 

yep, thats where i go, one of the only places that will do it for free.

 

Most AutoZones will have a problem with the 1995 LT1. They see that it has an OBD-II ALDL connector, and hook up their OBD-II scanner. Of course it won't "connect" with the 95's OBD-I computer, so they get all confused. You need to find a shop that A) is willing to scan an OBD-I computer, and B) has the proper connector for the 1995.

 

monday i will be bringing it to the shop to scan. thats about my only option. i will tell you guys what it says then and we can go from thier. thanks for your input

 

My brother inlaw had the same problem with his truck.It was the o2 sensor.Hope this helps.

 

I had that exact same problem for a few months, replaced just about everything from plugs, wires,egr, fuel filter, pcv and it wouldnt go away? Well it ended up being the o2! So if I were you I would go with that one? I did all the smaller things first and thats where I ended up. But then thats just me?

 

well autozone scanned it and said it was the map sensor. but i think i am gonna change the o2 sensors too cause they (if im not mistaken) are original and the car has 147k on it

 

YES , with that many miles I would definately start with the o2s!

Thanks,
Rich

 

mine has 91k on it and i just had to replace the ignition module, one of the coils, all new plugs and wires,all the 02 sensors and the cat.

 

Just think though, all of those items are maintenance items that would need replacing anyways. I just replaced all of those things just trying to fix that damn 2000 rpm stumble! I dont wish that problem on anyone, biggest pain in the $&* when you commute a long way to work everyday

But all is well now or for now I should say!

Good luck with the stumble, I feel your pain!


Rich