C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Is the TPS adjustable on a 90??

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Old Jan 21, 2003 | 10:44 AM
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Default Is the TPS adjustable on a 90??

Searched in the archive with no luck!
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Old Jan 21, 2003 | 02:34 PM
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Default Re: Is the TPS adjustable on a 90?? (conv90)

Try this thread http://forums.corvetteforum.com/zerothread?id=397273

I've read this one but I'm still a little confused if a 90 is adjustable or not :confused: Maybe some other 90 owners will know.
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Old Jan 21, 2003 | 03:41 PM
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Default Re: Is the TPS adjustable on a 90?? (Red90Coupe)

not :leaving:
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Old Jan 21, 2003 | 04:43 PM
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Default Re: Is the TPS adjustable on a 90?? (conv90)

There's a little bit of wiggle-room on mine. Good for approx. .50-.70 V
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Old Jan 22, 2003 | 01:32 PM
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Default Re: Is the TPS adjustable on a 90?? (ELEVENS)

You can adjust it, but you have to modify it to do so. Use a small round file to slot the holes and then you can adjust it.
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Old Jan 23, 2003 | 07:45 AM
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Default Re: Is the TPS adjustable on a 90?? (KYVette90)

Not. It can be "altered" to allow adjustment but I thought I read somewhere that the ECM automatically calibrated the TPS on startup... Not certain about that though. :confused: :confused: :confused:
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Old Jan 23, 2003 | 02:36 PM
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Default Re: Is the TPS adjustable on a 90?? (Red 90 L98 Coupe)

That makes sense..... It must be calibrated by the ECM somehow since the engineers went to the trouble to redesign the TPS without adjustment slots, I just can't figure out how it could :confused: :confused: I'll try to find out and let you know
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Old Jan 23, 2003 | 03:17 PM
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Default Re: Is the TPS adjustable on a 90?? (Red90Coupe)

i believe it just take the base voltage and compares that to the WOT voltage to get a percent throttle position. i've heard WOT voltage is as low as anything higher than 3.8, up to anything higher than 4.something.
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