where is throttle sensor located ?

Asked by Mar 16, 2014 at 01:30 AM about the 1985 Chevrolet Corvette

Question type: Maintenance & Repair

looking for the reason the engine surges and dies when stopped at light or in traffic. Runs
great on the hwy. Will run if put in neutral after coming to stop. Light pedal will keep rpm's
steady, otherwise rpm will fluctuate from450 to 800 at random. Could it be the throttle
control module and how and where is it on the 1985 corvette motor. Thanks.

5 Answers


it has to be connected to the throttle shaft to turn thru its 3 point phases a simple pontimeter varying low voltage to pcm, yeah they can short out, rarely though


Not sure what all that jimmy7 crap ment. You should have .5 Volts to the PCM at idle position and 4.5 V at wide open throttle. do this testing key on engine off, KOEO. your tuned port engine has a throttle body mounted to the front of the intake plenum, at the rear of the big ribbed hose from the air cleaner. the TPS, throttle position sensor is on the throttle body opposite the throttle cable, passenger side

1 of 1 people found this helpful.


1 of 1 people found this helpful.

Also check and clean your idle air control. It's located directly below the throttle position sensor.

Best Answer Mark helpful

As the doctor mentioned about tps it should be .5 volts at idle to 4.5 at full throttle. You should show a smooth climb in voltage as you move throttle to full open and a smooth decline as you return it to full closed position. Hook your digital volt meter to "A" and "B" marked terminals to check it for proper function.

Your Answer


Looking for a Used Corvette in your area?

CarGurus has 15,654 nationwide Corvette listings starting at $4,500.


Chevrolet Corvette Experts

  • #1
    John Carson
  • #2
    Vincent Parker
  • #3
    Tom Demyan
View All

Related Models For Sale

Used Chevrolet Camaro
246 Great Deals out of 29,823 listings starting at $4,980
Used Ford Mustang
289 Great Deals out of 38,325 listings starting at $1,995
Used Porsche 911
87 Great Deals out of 5,120 listings starting at $8,998
Used Dodge Charger
248 Great Deals out of 33,022 listings starting at $495
Used Mercedes-Benz SL-Class
55 Great Deals out of 3,217 listings starting at $4,930
Used Ford F-150
2,492 Great Deals out of 220,105 listings starting at $1,222
Used Pontiac Firebird
6 Great Deals out of 671 listings starting at $2,500

Used Cars For Sale

2018 Chevrolet Corvette For Sale
7 Great Deals out of 2,624 listings starting at $44,760
2017 Chevrolet Corvette For Sale
16 Great Deals out of 3,192 listings starting at $42,998
2016 Chevrolet Corvette For Sale
8 Great Deals out of 906 listings starting at $39,500
2015 Chevrolet Corvette For Sale
6 Great Deals out of 655 listings starting at $35,999
2014 Chevrolet Corvette For Sale
636 listings starting at $35,111

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.