My Tachometer is out of whack. It works but its like 2,000RPM's higher than where it should be. My tempertature gague doesn't seem to work either. What's the problem and how can I fix it? Would getting new gauges fix the problem or are the senders screwed up? The Engine was swapped from a 305 TPI to a 350 TPI by the guy who owned the car before me. Does this impact the Tach at all?

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"Though I cruise through the valley of Rice I shall fear no turbo, for torque art with me."
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1985 IROC-Z w/T-tops, 305 out and 350 L98 TPI engine in, Hooker Super Comp Headers, 3" Hooker Super Comp Cat-Back, 3" CatCo Cat, Rebuilt TH700R4 with Shift kit, 3.73 Richmond gears, Auburn differential, Accell SuperCoil, Accell 8.8 racing wires, BBK AFPR, Homemade Ram-Air (thanks to Andris Skulte), MAF screens removed, Dropped A/C, TB coolant bypass, Hurst Dual-Gate Shifter, Air Foil, K&N filters, Holley performance fuel pump, Spohn Subframe Connectors, Re-located Spohn Lower Control arms, and more to come.

 

Dont know if you tried this one yet....but on the driver side of the engine up near the first spark plug there should be a wire hooked up to a little mettle prong on the engine block. This controls the TEMP sensor. If that is off....there is the problem. I have/had the same problem with mine 89 camaro. When I first bought the car the Tack would goo loopy. They had to put a new Tach in for me. And well my temp still isnt working but I have narrowed it down to the tack is just13 years old and it is broke. Hope this helps some whut

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89 RS Camaro
Hedman Headers, Highflow Cat, Flowmaster 80 Series
180 Degree Thermo
Open Air Element with K&N Air Filter
Custum Burned Chip

So Many Mods......so little time

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