overheat problem that is spraining my brain

3 posts 2 contributors 1,306 views

Member since Jul 2010
2 posts
queens, NY, USA

Jul 4, 2010 at 5:03 PM

1998 crown vic with a/c on i drive vehicle for 30 mins temp light (Have computer DASH) spikes up pull over pop the hood no overheating. start engine everything is ok. turn off a/c and drive no temperature light spike. As soon as i use the a/c while driving it will spike. What in the heel is this.?

jdmeaux

Member since Jan 2009
525 posts
Lafayette, LA, USA
1 vehicle in the registry

Jul 4, 2010 at 9:19 PM

Sounds like a BAD temp sensor. Check out the factory wiring manual to trace which sensor.

*******************
PROUD MEMBER of www.crownvic.net

It's just a SUPER-DUTY Mustang GT Sedan. 198K miles and still rolling HARD.

1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified.

13.26 @ 107.24 MPH 1/4 mi w/ me, tools, & full tank of 93 octane

I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings, Kooks headers, 2 1/4inch exhaust, TCI 2200-2400 rpm Stall converter

.PLANS:: engine upgrade, 5.4L 2v stroker, rebuild interior in leather w/ buckets, thinking about turbos

richards74OP

Member since Jul 2010
2 posts
queens, NY, USA

Jul 4, 2010 at 9:49 PM

does this vehicle have 2 temp sensors. I changed the one on the manifold is there one on the engine block

edited Jul 4, 2010 at 9:51 PM

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