1998 Dodge Caravan Engine running hot

Tiny
VANNOGO
  • MEMBER
  • 1998 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 178,000 MILES
First noticed that engine temp gauge was about 3/4 of the way to hot. Normally runs just above cold. Checked under hood and both fans are off. I was hoping to find a blown fuse, but the 40Amp fuse labeled RAD FAN in the relay and fuse center is OK. What do I check next? Thanks, Van NoGo
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Saturday, May 9th, 2009 AT 7:16 PM

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Tiny
BMRFIXIT
  • EXPERT
Check Radiator Fan RelayFront of left frame rail.


http://www.2carpros.com/forum/automotive_pictures/99387_Graphic1_334.jpg

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Saturday, May 9th, 2009 AT 7:59 PM
Tiny
VANNOGO
  • MEMBER
Hi BMRFIXIT,
Thanks for the advice. It was right on. Fans spin OK now.
Just want to make a few comments.
1. Relay was $50 - yikes! - I remember when a radiator was less then that.
2. Removal and replacement of the relay was fairly easy after the air cleaner assy. Was removed. All the bolts were 8 or 10 mm and easily removed with 1/4"
ratchet.
3. The 4 connector plug connecting the relay to the wiring harness was a bear to remove. Slide the red plastic locking tab to the right to release it. I had to soak the connector with WD40 and pry with a flatblade screwdriver to seperate the connector halves.
4. Finally, be patient after replacing the relay. Fans won't start right away. The water has to warm up a little first. Running the AC will make the fans start sooner, but it still takes a few minutes.
5. One last thing. Relay is solid state - so hard to check with a meter. Input to relay is on pins 1 and 3
output to fan is on 2 (green wire) and 4 (black wire). None of the pairs are completely open or completely shorted so can't really tell if relay is good or bad.

Thanks again BMRFIXIT.
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Thursday, May 14th, 2009 AT 9:59 PM

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