Engine overheating (99 Ram Van Wagon 2500 5.2l V8)

Asked by Capt_Twitch Mar 13, 2018 at 09:31 PM about the 1999 Dodge RAM Wagon 2500 Extended Passenger RWD

Question type: Maintenance & Repair

Had a huge temp spike. Pulled over and checked
both radiator hoses (both were hot). Waited until it
cooled down, coolant levels were good. Started it
back up, heated to 210°, t-stat opened, cooled
down to 180°. Drove it to a friend's house to figure
out WTF is going on.

Trying to nip this in the bud before I blow a head
gasket on my next long trip.

4 Answers

I've checked all of the other posts I can to try to figure it out, but I don't want to go out and buy any parts until I have a better idea of what is wrong with it.

10

Hello, I have the same engine, 5.2L or 318 V8 in a 1992 Dodge B250 I have been back and forth to the auto parts store, junk yard and have had several mechanics other than myself take a look at it and no one could figure out the problem. So, had it scanned, there were several codes including a code 37 I found the coolant temperature sensor was reading "voltage too high". Read up on this and found that this was the cause the overheating, the raw gas smell, black smoke, and voltage regulator overcharge the system.

1 people found this helpful.
40

The voltage regulator isn’t regulating the voltage! It’s going to also boil your battery & ruin it. Now days most are internal in the alternator. I’d get it changed before it ruins some of the more sensitive electronics on your van

1 people found this helpful.
5

I've had overheating problems on my 94 dodge when in traffic it would overheat the whole time it was a small puncture on the hose near the thermostat.

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