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Check Engine Light is on again-and I got the code.

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jb talons

20+ Year Contributor
176
1
Sep 19, 2002
Latrobe, Pennsylvania
I had the code checked. I don't know the code number, but the description was "throttle sensor switch is off". Any ideas what to look for. I couldn't see any thing that was loose or unplugged.

Any suggestions for things to check would be appriciated.

Thanks

JB
 
maybe the "throttle position sensor" (better known as TPS) is adjusted wrong, or not working good.

Closed TP Switch and TP Sensor Adjustment [2G]

1. Disconnect the connector of the TPS.
2. Connect ohm meter between terminals 3 and 4.
3. Insert a feeler gauge with thickness 0.45mm (.0177 in.) between the throttle stop and the throttle lever.
[Fold a piece of paper in half 4 times if you don't have the feeler -Ed.]
4. Loosen the TPS mounting bolts. Turn the TPS all the way counter
clockwise.
5. Check for continuity in this condition.
6. Slowly turn the TPS clockwise until the point where continuity and
non-continuity is found (pins 3 and 4).
7. Tighten the TPS mounting bolts.
8. Check the voltage between pins 2 and 4 of the TPS with the ignition
switch on, but the engine not started.
9. Standard value: 400 - 1000 mV
10. Remove the feeler gauge.
 
Sorry to revive this thread, but I had to say thanks.

Thanks, Sam.

I had a TPS from my old engine. Put it on and adjusted it like you said. The car is running like a champ. I didn't relize how bad it was idleing before. Now it idles around 1,400 rpm and just purrs like a kitten.

However, it was no quick job. I'm always amazed at how much stuff I have to move to get at what I'm working on.

Thanks again.

JB
 
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