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Posted by: mipstien Sep 20 2010, 09:39 AM

So went to start her up and after starting the gauge for temp is bouncing all over the place when I rev it. Was fine at idle. The gauge worked when I last parked it 3 days ago. It was also about 65 degrees outside coolest its been when I tried to start it.
I did search didn't see anything. Also on a phone so searching wasn't easy.

Posted by: Cupomeat Sep 20 2010, 09:44 AM

Look for loose wires. As you say it is bouncing when revving the engine (likely making it move in the engine compartment) I'd start with that.

Ground at the gauge is a good one as well.

I hope that helps.

Posted by: mipstien Sep 20 2010, 11:21 AM

Well bouncing isn't quite exact. Its more like going crazy. Mostly stayin hot area but just going ballistic not steady bouncing at all.

Posted by: simonr Sep 20 2010, 11:26 AM

Mine did that !!! The metal bracket that holds the temp wire into the taco plate was grounding . I bent it away from the place it was grounding to and it is fine now. it is most definatly a grounding loose wire issue . Good luck in your search . I would start with the sending unit

Posted by: mipstien Sep 20 2010, 02:29 PM

taco? lost me at taco

Posted by: type47 Sep 20 2010, 02:40 PM

remote temp sensor sometimes called a "taco plate" or taco sender" or just plain "taco"!

Posted by: Bartlett 914 Sep 20 2010, 03:43 PM

It has a tendency to bend like a taco.

Posted by: 914Sixer Sep 20 2010, 06:58 PM

Most of the wires that run from the sender to the plug under the battery tray are BRITTLE, GOING OPEN OR GROUNDING OUT. Replace the whole wire from end to end. Use heavier gauge wire and make sure it has some sort of extra shield(ie heat shrink, heat resistant tubing) over the wire itself.

Posted by: Mark Henry Sep 20 2010, 07:07 PM

I love a nice taco

Posted by: mipstien Sep 21 2010, 07:25 AM

if i had to drive my car to get to a lift would that be any issue? its never over heated before.

Posted by: realred914 Sep 21 2010, 11:16 AM

the gauge go crazy as soon as you start it cold? if so then you know the car cant be warm, much less over heating. so you should bne ok, not a real reading. yes the gauge can peg out when shorted. maybe a intermittant short in the wire.

if you can comfortably hold the dip stick in your hand with out getting burned, then you can assum e the oil temp is not way too hot. if the dip stick gets so hot as you can not hold it for but a brief seconds then you may really be over heating.

Posted by: mipstien Sep 21 2010, 11:22 AM

O no its not ever gotten that hot even when 100+ outside and on a long drive.