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I've been working on this 92' SS for about 2 weeks to get this misfire out of its system. I need to get rid of the misfire so it will pass smog and i can buy it. The first day I went to check the car out and take it for a test drive the coolant line form the turbo to the coolant reservoir broke and I got a knock sensor code.

The car has been sitting in the same storage lot and has only been started up every 2 weeks or so to move it around the lot and out of other car's way. When I took it for a test drive with the owner, the idiot decided to accelerate super hard through every gear all the way up to 4th gear on a near empty tank with year old gas. The ecu pulled a temp sensor CEL and Knock Sensor CEL about 1/4 mile down the road. When we got back we discovered the coolant line had burst.

Anyway I got a new hose and a new knock sensor because the stock one was toast (not sure if the CEL was from bad gas or the bum sensor) After replacing the knock sensor I kept getting the knock sensor code, so i unplugged the negative battery terminal and left it unhooked for a few days, came back and started it up and the the CEL light kept on flashing. I assumed it was the "All OK" signal but I never connected the green connectors for longer than a brief moment. I never tried clearing the ecuby connecting the green connectors driving it and all that stuff.

Has anyone experienced this before? Every time I start it the ECU light just flashes, not sure why, and it has no codes. And on top of that it has a misfire, but i think that might just be because of the sparkplug wires.

Imprezive wrote:I've been working on this 92' SS for about 2 weeks to get this misfire out of its system. I need to get rid of the misfire so it will pass smog and i can buy it. The first day I went to check the car out and take it for a test drive the coolant line form the turbo to the coolant reservoir broke and I got a knock sensor code.

The car has been sitting in the same storage lot and has only been started up every 2 weeks or so to move it around the lot and out of other car's way. When I took it for a test drive with the owner, the idiot decided to accelerate super hard through every gear all the way up to 4th gear on a near empty tank with year old gas. The ecu pulled a temp sensor CEL and Knock Sensor CEL about 1/4 mile down the road. When we got back we discovered the coolant line had burst.

Anyway I got a new hose and a new knock sensor because the stock one was toast (not sure if the CEL was from bad gas or the bum sensor) After replacing the knock sensor I kept getting the knock sensor code, so i unplugged the negative battery terminal and left it unhooked for a few days, came back and started it up and the the CEL light kept on flashing. I assumed it was the "All OK" signal but I never connected the green connectors for longer than a brief moment. I never tried clearing the ecuby connecting the green connectors driving it and all that stuff.

Has anyone experienced this before? Every time I start it the ECU light just flashes, not sure why, and it has no codes. And on top of that it has a misfire, but i think that might just be because of the sparkplug wires.

The ECU is saying there's something bad-wrong, clear the codes and try again.

Also, there's not enough restriction in our cooling system to cause a cooling line burst from just rpms alone, this means one of two things:
1: The lines are very brittle on the car and they all need to be replaced. Coolant and radiators flushed.
2: There's a blockage in the system due to old, bad coolant (it turns into acid after awhile and starts eating through the radiator, leaving behind lots of rust deposits) - and the system needs to be flushed and possibly both radiators replaced.

To clarify the line was already broken, he never bothered to check all the hoses before taking it for a test drive. It wasn't that it burst when driving, but it did spew a lot of the coolant onto the turbo.

As for that ECU light, I'm not sure of. If there were bad sensors or something it would just stay on like normal, like most CEL lights do. When I try to pull the codes nothing happens, it would tell me if there was a bad sensor, not just flash. Unless this means there is something uber-wrong with it and it cannot describe with flashing code the extensive horrible damage that has been incured upon the engine. But I dont think anything like that happened, because it runs fine (except for the misfire) and pulls hard like it should.