1999 Ls1 Revlimiter problem - Team Camaro Tech
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post #1 of 6 (permalink) Old Aug 5th, 06, 08:49 AM Thread Starter
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1999 Ls1 Revlimiter problem

Hello , I have a 1999 Camaro SS Slp LS1 ,6speed, and My revlimiter is not working properly please help. I found out that the factory settings are 6190rpm 1st through 6th ons and 6189rpm 1st through 6th offs which is basically a 6200rpm revlimiter. My problem is that 1st and second gear keep cutting out at 5800rpm then third pulls to 6200 to 6300rpm and so on . This is with a Slp diablosport tune set at a revlimiter of 6490rpm on the ons and 6489rpm on the offs 1st through 6th. Basically a 6500rpm shiftpoint. It is doing the same thing with the factory tune also! I was told that there is a crank pully sensor that controls the revs. Is there a way to diagnose this problem and repair it . It's driving me crazy. Please help me , any other suggestions Thanks, Jamie P.S. I also have a SLP crank pully/balancer on the engine.
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post #2 of 6 (permalink) Old Aug 8th, 06, 10:43 PM
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Re: 1999 Ls1 Revlimiter problem

if you are having to much of a problem with it just get yourself a power programer i would go with a hypertech unit and a chip then you can change it to anything you want hope this helps if not well good luck with your problem.
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post #3 of 6 (permalink) Old Aug 9th, 06, 08:09 AM Thread Starter
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Re: 1999 Ls1 Revlimiter problem

I have a diablosport SLP tuner and It is not adjusting the revlimiter in 1st and 2nd it keeps hitting at 5800rpm and even with the stock tune also which is set at 6200rpm at the factory. I checked the tach and it seems accurate it never did this before. I had a problem with my first Slp tuner they sent me a new one and I even had a new ecm and reflash put in the car and its still doing it with the stock tune and the programmer adjusting it to 6500rpm ????
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post #4 of 6 (permalink) Old Aug 9th, 06, 07:48 PM
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Re: 1999 Ls1 Revlimiter problem

You need to find someone with the LS1 Edit program. It is used with a laptop computer as reads realtime data. I've heard that sometimes you have to disable something about the crank sensor and reprogram it to "re-learn" the computer modifications. To LS1tech.com for more in depth opinions.

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post #5 of 6 (permalink) Old Aug 11th, 06, 08:36 AM
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Re: 1999 Ls1 Revlimiter problem

i agree if you have tryed the programer it has to be a computer problem get the thing pluged in and good luck.
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post #6 of 6 (permalink) Old Aug 11th, 06, 08:57 AM
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Re: 1999 Ls1 Revlimiter problem

I'm totally grasping at straws here but this is something I learned about rev limiters on some models. The rev limiter setting is different for in-gear vs. out-of-gear modes. I think this is to prevent an over-rev between gears or when no load is placed on the motor. I'm not sure if the LS1 has two different rev limiter settings or not.

68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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