CROOZ1N
Well-known member
Hello Gentlemen,
This forum has come thru for me many times and I am here asking for some help again. The vehicle I’m working on is a 1993 coupe automatic with 124K. I am unsure of the heritage before I bought it about 3 years ago.
The problem is a miss at Idle but it’s very sporadic .I can be stopped waiting on traffic and I’ll feel a miss under my foot coming thru the brake pedal. Many times if I’ve been on the highway for a good while and exit, the car will simply die at the 1st stop light or end of the off ramp. This is very disconcerting to the wife and causes much panic whenever it stalls. It has however always restarted. I checked the Injectors for proper resistance and they all checked to manual spec. I do have the service manual as well.
I have downloaded and begun to study using datamaster software to look at whats happening with the car.
There are no codes stored and other than this little problem the car runs fine. I know that opti cap and wires were replaced by the PO and a PCM forless chip installed. Maybe for a rear end change. He went from the 2.59 to 3.07 I think.
I had a problem with it last spring in the coil crapped out and I had to go thru 2 garages before I got it fixed ( it was an out of town failure or I would have worked on it myself) the first place blamed the VATS but said they didn’t know what it was eventually.
Some AC problems the GM Junkie helped me work thru but for the most part shes been trouble free. As I said before I’m just starting using Datamaster so I still need to learn what I’m recording and how to interpret it. As a little background I have worked as a mechanic deisel and Automotive, and now as an Industrial Electronics Technician so I can be taught and know my way around a toolbox as well as a laptop.
Any help you can offer will be appreciated.
This forum has come thru for me many times and I am here asking for some help again. The vehicle I’m working on is a 1993 coupe automatic with 124K. I am unsure of the heritage before I bought it about 3 years ago.
The problem is a miss at Idle but it’s very sporadic .I can be stopped waiting on traffic and I’ll feel a miss under my foot coming thru the brake pedal. Many times if I’ve been on the highway for a good while and exit, the car will simply die at the 1st stop light or end of the off ramp. This is very disconcerting to the wife and causes much panic whenever it stalls. It has however always restarted. I checked the Injectors for proper resistance and they all checked to manual spec. I do have the service manual as well.
I have downloaded and begun to study using datamaster software to look at whats happening with the car.
There are no codes stored and other than this little problem the car runs fine. I know that opti cap and wires were replaced by the PO and a PCM forless chip installed. Maybe for a rear end change. He went from the 2.59 to 3.07 I think.
I had a problem with it last spring in the coil crapped out and I had to go thru 2 garages before I got it fixed ( it was an out of town failure or I would have worked on it myself) the first place blamed the VATS but said they didn’t know what it was eventually.
Some AC problems the GM Junkie helped me work thru but for the most part shes been trouble free. As I said before I’m just starting using Datamaster so I still need to learn what I’m recording and how to interpret it. As a little background I have worked as a mechanic deisel and Automotive, and now as an Industrial Electronics Technician so I can be taught and know my way around a toolbox as well as a laptop.
Any help you can offer will be appreciated.