2001 Chevy Corvette LS1 94,000 miles code 357

TIMMYK

MEMBER
2001 CHEVROLET CORVETTE

My 2001 chevy corvette LS1 with 94k miles has a check engine code of 357. I replaced the coil pack on the 7th cylinder and reset the code, but it came back in a couple days with the same code. The car seems to miss a little and I can smell coolant under the hood after the car has warmed-up. There is no coolant under the vehicle, but I do have to add some occasionally. If I do a lot of stop and go driving and drive it hard, the temp gets up to 215 degrees and returns to 190 degrees. What is the problem(s)?

Saturday, October 20th, 2007 AT 4:31 PM

1 Reply

TIMMYK

MEMBER
3 POSTS

I had my buddy Dave take a look at the car and he found the answers. The problem with the loss in coolant happened to be coming from the water pump. He stuck a mirror underneath and found coolant leaking from the water pump housing.

The problem with the engine code 357 is most probably the wiring harness. He talked to a guy that is heavy into corvettes and he said that the wiring harness is undersized and it's a common problem with these cars. An open or shorted wire in the harness going to the coil pack of cylinder 7 would cause this code and the missing.

Hope this helps others.

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Tuesday, October 23rd, 2007 AT 7:01 PM