wildberryeagle

I posted earlier that my 95 z28 runs worse when it gets warm. I think that when it gets warm its starts to flood a little bit. It kind of backfires when I hit the gas real quick and the smell of gas is noticable. I had my buddy put his computer on it, and doesnt show anything. I am putting a new coil on it as soon as it comes in. Anyone else have any ideas. I already put a new opti, waterpump, altenator. It runs great when its cold. Thanks

Injuneer

Flooding, running porly when warm could be related to the O2 sensors being faulty or the coolant temp sensor not indicating the correct temperature. If it's just a matter of a bad reading, neither of those would necessarily set a code.

What kind of "computer" did he use to access the PCM? Was it an OBD-I code reader or a full scanner? Did he have the correct adapter plug to connect an OBD-I device to your 95's 16-pin ALDL connector?

wildberryeagle

I dont know what kind it was. The brand was snap on, and he said it cost him around 10 thousand dollars. He has a garage with inspection license. He also had a bunch of different ends with it.

wildberryeagle

I replaced the coil, not the problem. I guess I will look at o2 sensors next.

mrmint69

The coolant temp sensor is around $15 and takes 15 mintues or so to replace. I would try that before going into expensive O2's.

wildberryeagle

I just replaced the coolant sensor. I am going to try it out tomorrow, but I dont think that it is the problem. Crossing my fingers that this fixes it.

wildberryeagle

It didn't change anything. I had my fuel pump tested out and it was at 38 with the vacuum line on. I am at my wits end with this damn thing.

Injuneer

Generally its a good idea to test components before randomly replacing them. Temp sensors are extremely easy to check.

mrmint69

If you have access to any scanners that show the O2's, that will help to figure out if they are working correctly.