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Young1 · 04-18-2022

The shimming is for the crankshaft sensor and to my knowledge only applies to the 90 model year. It?s funny that there is a code 31 for the Camshaft sensor but there is no factory code for the crankshaft sensor. I agree that misfires can show up as a 31 code and I would replace the crankshaft sensor with one from Jerrys. It is a direct replacement fit. If you buy one from the auto parts store you have to grind them to fit properly to the engine block. My engine was giving me trouble and my crankshaft sensor tested perfectly per the factory service manual but upon replacement took care of the problems. Use a bit of RTV too. They are easy to change out.

04-18-2022	#8
Young1 Join Date: Sep 2016 Location: Ocala, FL Posts: 901	Re: Code 31 The shimming is for the crankshaft sensor and to my knowledge only applies to the 90 model year. It?s funny that there is a code 31 for the Camshaft sensor but there is no factory code for the crankshaft sensor. I agree that misfires can show up as a 31 code and I would replace the crankshaft sensor with one from Jerrys. It is a direct replacement fit. If you buy one from the auto parts store you have to grind them to fit properly to the engine block. My engine was giving me trouble and my crankshaft sensor tested perfectly per the factory service manual but upon replacement took care of the problems. Use a bit of RTV too. They are easy to change out. __________________ Steve Young 1991 ZR-1 Quasar Blue Metallic/Black #729 Second Owner 1991 ZR-1 Dark Red Metallic/Black #2040 SOLD 1990 ZR-1 Dark Red Metallic/Saddle #1670 SOLD Double your happiness.....complain half as much.