Bad Sensor?

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Oct 10, 2009 | 11:30 AM

onelionhunter

Thread Starter

Laughing Gas

Joined: Aug 2009

Posts: 1,192

Likes: 7

From: Belgrade, MT

Bad Sensor?

Went to pull my truck into the shop yesterday morning to do a transmission flush and power steering flush. Was about 20 degrees out, fired right up, but when i hit the go pedal, nothing, just sat there idling like i had never even touched the pedal. As it warmed up, the pedal started to slowly work better. Once warmed all the way up, it was fine.

I assume this is the little electronic sending box on the go pedal?

Thanks, Tom

Oct 10, 2009 | 11:40 AM

Rushmore X

Logistics Pro

Joined: Mar 2006

Posts: 3,678

Likes: 2

From: Rapid City SD

I seem to remember a similar problem before I changed my CPS? Been awhile since I did it and I have senior moments. Could have been before I changed the up-pipes also, was having problems with the EBPV.

Oct 10, 2009 | 11:45 AM

clintbonnie

Cargo Master

Joined: Jun 2003

Posts: 3,292

Likes: 6

From: Ardenvoir, Washington

I don't think it is your cps.. There is a circuit for your pedal response.. probably is going bad.. Someone will give you more info on this..

Oct 10, 2009 | 11:48 AM

SpringerPop

Hotshot

Joined: Jan 2002

Posts: 17,988

Likes: 207

From: La La Land

There is a microswitch on the throttle pedal that must work or you end up with the problems you describe.

Check to be sure you hear the Idle Validation Switch (IVS).

If it gets dirty, it can become intermittent. Then, the Powertrain Control Module (PCM) thinks the pedal has no foot pressure and remains at idle.

It's just a small microswitch mounted in the Throttle Position Sensor (TPS).

You should be able to hear it "click".

You might try cleaning it with electrical "contact cleaner".

Pop

Oct 10, 2009 | 11:50 AM