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2001 Chevy Corvette LS1 94,000 miles code 357

Tiny
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)?
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Saturday, October 20th, 2007 AT 4:31 PM

1 Reply

Tiny
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

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