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High idol rev

Tiny
TNBOY26
  • MEMBER
  • 1994 CHEVROLET S-10
  • 6 CYL
  • 2WD
  • MANUAL
When I start my 1994 chevy s-10 the vehicle idols wide open as if it had the pedal pressed to the floor. The pedal isn't sticking the (not good with engine parts)screw that can be adjusted to change the idol has been checked does anyone have a insight as to what the problem could be
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Saturday, January 1st, 2011 AT 3:37 AM

7 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Cross these two terminals as shown with a piece of wire, then turn the key on. Count the flashes, a 22 will flash as 2 flashes then a short pause, then 2 flashes, if more than one code is stored, the pause will be longer. The codes will display three times and end with 12. Write them down and post here. This connector is right under the middle of the dash.
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Saturday, January 1st, 2011 AT 4:31 AM
Tiny
TNBOY26
  • MEMBER
  • 4 POSTS
Where will the flashes occur, upon the connector, or what.
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Saturday, January 1st, 2011 AT 7:50 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
The service engine light itself will do the flashing.
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Saturday, January 1st, 2011 AT 9:34 PM
Tiny
TNBOY26
  • MEMBER
  • 4 POSTS
I tried to connect a wire between the two terminals but I dont believe the wire was making a connection i'm not the best at describing these types of things but inside Terminal A there is six available ports to put a wire in. Three of these have a prong sticking out, three do not. Of the three that don't, two are labeled black underneath and the one doesn't have a prong but but is between prongs that have 4WD INT labeled beneath them.

TERMINAL B has three available ports none of the three have prongs in them. The first two are labeled PWR and HTD steering and the third port has green underneath it.

I was unable to get the check engine light to flash after the very first two flashes which the vehicle does with or without the wire connecting the two terminals. I pushed the wire into the ports without prongs and tried several variations as there were several ports lacking prongs inside of TERMINAL A & B. Do you have any idea as to why the check engine light isn't responding to my attempts.
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Saturday, January 1st, 2011 AT 11:03 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Look at this picture, click on it to enlarge it, you just jump the two termials as shown, then turn the key on and count the flashes as described above, if this is to difficult, take it to a qualified mechanic, because repairs will be MUCH more difficult!
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Saturday, January 1st, 2011 AT 11:37 PM
Tiny
TNBOY26
  • MEMBER
  • 4 POSTS
My diagnostic connector does nt look like the one pictured above but anyhow thanks for trying to help me out
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Saturday, January 1st, 2011 AT 11:58 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Can you post a picture? If you have OBD II in your truck it will look like this one instead, and just plug in an OBD II scan tool and the codes will display on the tool.
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Sunday, January 2nd, 2011 AT 5:51 AM

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