TPS issues

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Offline Rx7man

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TPS issues
« on: October 18, 2016, 09:50:14 PM »
Got an annoying little TPS issue.. When I first start the truck, the TPS idle point is about an ADC value of 170, as I run the truck, the idle ADC value drops down to 150.. Problem with this is it messes up my maps.. If I manually set it to 170, as it warms up it stays in idle mode waaay too long, if I set it to 150, it prevents jake mode from engaging

Wondering if anyone else (who's implemented TPS) has closely watched the TPS readings as it warms up and if it's just something funky happening in mine.. I'd buy a new one but I'd like to know if that's the real problem first
'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM

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Online hakcenter

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Re: TPS issues
« Reply #1 on: October 19, 2016, 09:40:16 PM »
Cold things conduct better than warm things ?

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Offline Rx7man

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Re: TPS issues
« Reply #2 on: October 19, 2016, 10:39:10 PM »
Yeah, but that's the reason that it's a variable resistor with a hot and ground.. besides there's only a minute amount of current going through it... I dunno.. If it keeps giving me grief I may add a microswitch to it and only use that for a lot of the logic.. I'd much rather not though
'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM

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Online hakcenter

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Re: TPS issues
« Reply #3 on: October 20, 2016, 11:17:32 AM »
TPS < && RPM < = idle

I'm using a slow moving average rpm with a faster computed rpm then average them together to get something that is stable, and slow, but fast enough to know when I'm idling.

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Offline Rx7man

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Re: TPS issues
« Reply #4 on: October 21, 2016, 01:44:37 AM »
Yeah, I think I'll do something like that
'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM