1998 Dodge Caravan Engine running hot

178,000 MILES • 6 CYL • FWD • AUTOMATIC
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VANNOGO
  • MEMBER
  • 2 POSTS
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
May 9, 2009 at 12:16 PM
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
check Radiator Fan RelayFront of left frame rail.


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May 9, 2009 at 12:59 PM
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VANNOGO
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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.
May 14, 2009 at 2:59 PM
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