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04-12-2022
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#1 |
  
Join Date: Mar 2008
Location: Auburn, KY
Posts: 540
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Code 31
Now that I got my car started and relocated to my new house, I can pay more attention to it. After I got it here, I had no less than 3 items on my DIC. One is easily fixed: Put air in the tire. The second one is also kinda easily fixed: One of the teeth on the ride select is missing a tooth on the wheel on top of the shock. I had it out looking at but for whatever reason at the time, I just put it back in. The last one is boogerbear as my dad would call it. Don't ask!
I got a code 31. I went down this rabbit hole before. According to the diagnostic that I performed, it was the ECM. After going through all that, it still shows the 31 code. It pointed to the cam sensor. I did buy one from someone on here and it didn't work. Engine wouldn't even run. I put back the old one and the engine would start but won't accelerate. Marc Haibeck told me that it could be for something else. Any ideas. Roy
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Roy L. Carman If I feel the need for speed, I just think about flying the B-777.  1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 ZR-1 Net Registry Board Secretary |
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04-13-2022
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#2 |
 
Join Date: Sep 2016
Location: Ocala, FL
Posts: 870
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Re: Code 31
Jagpanzer has made some camshaft sensors that work. I have probably 25,000 mikes on the prototype. There is much to search and read on the subject. They are NLA.
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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. |
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04-13-2022
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#3 |
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Join Date: Mar 2008
Location: Auburn, KY
Posts: 540
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Re: Code 31
I saw that in a previous post. Problem is that they didn't work on my car. Could barely crank the engine. I talked to Marc about it and, basically, it either the ECM or the sensor. The ECM was done by Marc so I'm pretty sure the ECM is good. He did mention about shimming it with a .6000 washer. Problem is that I looked around for a washer with that thickness and I couldn't find any. None of the places around here don't carry it. Where did you get yours? I do have one of his sensors.
Roy
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Roy L. Carman If I feel the need for speed, I just think about flying the B-777. 1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 ZR-1 Net Registry Board Secretary |
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04-14-2022
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#4 |
Join Date: Dec 2019
Location: st louis mo
Posts: 746
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Re: Code 31
also throwing a cam code could be a misfire fault
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95 admiral blue z(sold)/ / 93 ruby z(sold) 91 steel blue z/95 aqua z haibeck 510, 91 callaway 415 areobody #5 |
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04-18-2022
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#5 |
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Join Date: Mar 2008
Location: Auburn, KY
Posts: 540
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Re: Code 31
Where can you find a .6000 washer?
Roy
__________________
Roy L. Carman If I feel the need for speed, I just think about flying the B-777. 1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 ZR-1 Net Registry Board Secretary |
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04-18-2022
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#6 | |
 
Join Date: Jun 2004
Location: Texas
Posts: 2,431
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Re: Code 31
Quote:
I?d go to Lowe?s and get a 5/8 (.625) one . Take a sheet of fine metal sand paper and shave off the .025.
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95 ZR-1 BLK/Gry #392 LT5 Reg# 868 *RIP* ZR1NET Founding Mem #155 |
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04-18-2022
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#7 |
 
Join Date: Dec 2007
Location: NYC
Posts: 1,182
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Re: Code 31
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90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD" |
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04-18-2022
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#8 |
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Join Date: Sep 2016
Location: Ocala, FL
Posts: 870
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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.
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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. |
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04-19-2022
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#9 | |
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Join Date: Mar 2008
Location: Auburn, KY
Posts: 540
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Re: Code 31
Quote:
92 Roy
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Roy L. Carman If I feel the need for speed, I just think about flying the B-777. 1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 ZR-1 Net Registry Board Secretary |
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04-19-2022
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#10 |
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Join Date: Mar 2008
Location: Auburn, KY
Posts: 540
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Re: Code 31
I'm working with Marc Haibeck on this since he redid the ECM. The ECM doesn't have any issues so it must be the cam sensor. I did get a Phil cam sensor and it didn't work in my car so I put the old one back. It starts up fine and runs good until it gets warmed up and won't accelerate and it throws the code 31. We'll see.
Roy
__________________
Roy L. Carman If I feel the need for speed, I just think about flying the B-777. 1989 Dk Blue Coupe lost in divorce 1991 Black Coupe SOLD 1992 Black ZR-1 #423 SOLD! 1993 Ruby Red 40th Anniversary ZR-1 #334 1995 Black ZR-1 taken by ex-wife 2002 Pewter Coupe no idea where it is 2003 50th Anniversary Corvette #No idea what number SOLD! ZR-1 Net Registry #516 Grand Sport Lifetime Member NCM Lifetime #1468 ZR-1 Net Registry Board Secretary |
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