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No Gauges - after engine installation

This is a discussion on No Gauges - after engine installation within the General Help forums, part of the LSx Technical Help Section category; I purchased a repo SS that was missing the drivetrain. It is a 98 with 6 speed. I put in ...

  1. #1
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    No Gauges - after engine installation

    I purchased a repo SS that was missing the drivetrain. It is a 98 with 6 speed. I put in a complete drivetrain from a 99 SS with 6 speed. Every thing seems to work ok except the gauges do not function right. The odometer does not light up either. The only thing I can think of is replace the wiring in the dash with the 99 wiring. I have plugged in several clusters and they all act the same. Any ideas before I tear into the dash

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    Senior Member bigrondownhiller's Avatar
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    do the lights light up? what about when you turn the key to the on position do you have the check engine, abs, others lit?

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    These are the 4 lights that light up ; service engine soon,check gauges,brake and security. Security does go off after a few seconds. The oil pressure pegs all the way to the right. Amp gauge does not look like it is showing a reading. Looks like fuel and temp gauge are working correctly. I just turned the key on one of my other camaros and nine lights light up upon turning the key.

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    Senior Member mrr23's Avatar
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    just because it's a 99 engine, doesn't necessitate swapping to a 99 harness. unless you swapped the 98 engine harness with the 99.

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    Senior Member bigrondownhiller's Avatar
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    check the sender for the oil gauge. when it pegs there is no connection to the sender. do the i interior lights on the dash light up?

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    Senior Member greatwhiteZ28's Avatar
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    soo none of your guage s work, looks like you blew a fuse, its the only red one on the drivers side in the panel replace it. the car still runs right and everytrhing?

    . i heard some cases like that but not on a drive train install. try that and let me know. start with all the simple stuff then go bigger

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    Checked oil sender connection , everything OK. All fuses under the hood and in the dash are good. The complete harness was missing under the hood when I got it. So all the wiring under the hood and the ecm are from the 99 donor car. All the wiring inside the car is the original 98 wiring. The engine runs fine.

  8. #8
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    The oil pressure sensor on the '98 is different from the '99-'02 - that might be the pegging issue.

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    You are probally right about the sensor if they are different . I still have the issues with the other gauges. I am thinking that I am going to have switch the wiring in the dash with the wiring from the 99 donor car.
    I always get myself in these wierd ass situations.

  10. #10
    Member cailey37's Avatar
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    My suggestion is to get a pinout for the 98 and 99 cars......they are different in the sense of wiring however the senors still put out the same signal so it shouldn't make a difference what oil sensor you have. I'm almost certain it's just a wiring issue you have.......you'll just have to trace each one to make them work.......pain in the a$$ but not too bad......

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    Slower Than a 3rd Gen juiced99ws6's Avatar
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    is it doing anything else out of the ordinary? there is a rather short grounding wire that hooks up the the back of the drivers side head, are you sure that and all other grounds are in place with a good connection. that ground will cause your gauges to go loopy and the odometer not to light up but I cant remember for sure if the car will start or not with it.

  12. #12
    Lurking MechanicalMehem's Avatar
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    the 98 harness is the only year where the wiring harness is different! so swapping in a 99 harness(drivetrain) would cause problems. if you have the dash harness swap it out, but if you have the 98 engine harness swap it, change to what parts you have that match....
    --Justin

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