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Suspect Tps?

No Crust Racing

By No Crust Racing,
in General Maintenance

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No Crust Racing Grand Master

No Crust Racing

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Posted

Hey guys,

I've noticed an odd issue with on the SAFC in my CA S13 recently. When slowly applying throttle the voltage will start to climb by itself once you reach a certain point. Say once I get to 25% throttle it will then just start climbing up to 100% by itself. The car itself is not actually accelerating though so it's purely an electrical thing.

At first I suspected my SAFC wiring into the loom was bad so I re-did it and soldered it up all nice and pretty - good connection to the TPS wire and good earth. Problem still existed so I'm now suspecting it's actually the TPS itself.

I removed it and soaked it in contact cleaner (the unit is sealed but has some holes I could use to get the cleaner in) as I understand it's a potentiometer inside which rotates around and adjust voltage accordingly. There was no change in the behaviour.

I've confirmed that the voltage increase is there at the TPS and is not just being seen by the SAFC.

Has anybody else seen this sort of thing or has any other suggestions before I replace the TPS?

Cheers

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