Tranny issue not setting a code??

[Riddick]

My truck just started hunting in and out of OD(mostly out) and the TC lockup has been in and out as well. It ran perfectly up to that point. I put a scanner on it yesterday and all I get is a P0118 - Engine Coolant Temperature Circuit High Input. I'm going to be dropping the pan in the next couple of days to change fluid.(and prolly change a solenoid or two :rolleyes5
How come this doesn't set a code?
I'm leaving for Vegas with the truck this sat and need it fixed by then.
Any ideas??

 

[DEERE3594]

From past experience that sensor will mess with OD, have another one you can try first?

 

[DEERE3594]

This sound like your issue at all?
http://www.dieseltowingresource.com/showthread.php?t=13816

 

[Riddick]

That sounds like it. I've got the irregular idle upwards of 1000rpm too. Where is the ect whatchamathingy?

 

[DEERE3594]

in the coolent crossover right by the T-stats

 

[DEERE3594]

yellow and black wire IIRC

 

[docdray]

nice research Justin, Engine Coolant Temperature Switch-ECT. controls idle, OD, and torque converter lock-up. it is a thermoresister. sometimes sensor is bad, sometimes connecter is bad.

 

[DEERE3594]

http://i62.photobucket.com/albums/h120/darkswordlord/0308091151.jpg
Its labeled as "CTS" coolant temp sensor in the pic :thumbsup:

 

[Riddick]

It wasn't disconnected, but gave it a wiggle and it fixed it right up. I'll check the connection later in the shop and maybe put some dielectric grease on it. Thanks for your help everyone.

 

[DEERE3594]

Great news! Glad to hear that Riddick!

 

[vegtech]

dont put dielectric grease IN it, you can put it around the rubber gasket but dont get it on the pins.

 

[Missy Good Wench]

Stop off at Radio shack and get a spray can of contact cleaner.

Oxidation will kill this stuff and drive one to drink.

Glad it was nothing serious.

Missy