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 92 RMW touchy throttle

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j2rossit

j2rossit

Posts : 97
Join date : 2014-01-13
Location : Oshawa On.

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PostSubject: 92 RMW touchy throttle   92 RMW touchy throttle Icon_minitimeSat Aug 30, 2014 1:23 pm

Hi All,
On my 92 RMW I'm having an issue with the throttle. The LO5 idles and runs great, but it's almost impossible to start up smoothly from a stop. It'll go from no power to full power with barely a push on the pedal. I tried lubricating the throttle cable just in case it was sticking but it didn't seem to do much.
Would a vacuum leak cause a symptom like this?
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Fred Kiehl

Fred Kiehl

Posts : 5295
Join date : 2009-11-13
Age : 70
Location : Largo, FL 33774

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PostSubject: Re: 92 RMW touchy throttle   92 RMW touchy throttle Icon_minitimeSat Aug 30, 2014 9:20 pm

Throttle position sensor.
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j2rossit

j2rossit

Posts : 97
Join date : 2014-01-13
Location : Oshawa On.

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PostSubject: Re: 92 RMW touchy throttle   92 RMW touchy throttle Icon_minitimeSun Aug 31, 2014 9:03 am

Hmm, is there a way of checking the resistance or voltage of the tps?
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lakeffect
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lakeffect

Posts : 3891
Join date : 2009-08-18
Location : Rochester NY 14621

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PostSubject: Re: 92 RMW touchy throttle   92 RMW touchy throttle Icon_minitimeMon Sep 01, 2014 8:03 am

Yes, and fairly easy. It might be better to check the voltage at key on, ignition off, as that is what the computer is using. There's three wires. One is the 5 volt source. the other two are what you need.

Place a volt meter across them. You can stick thin pointed probes into the back of the connector. At closed throttle you should be at +0.45V Asyou open the throttle you should see a steady rise in that value up to near +5.0V. It's if inconsistent or jerky, you've probably found the issue.

If you check resistence, same idea of seeing a smooth in crease in values.
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PostSubject: Re: 92 RMW touchy throttle   92 RMW touchy throttle Icon_minitime

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