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Discussion Starter · #1 ·
Ok, so last year before I put the Viper away, it spooked me a couple times by suddenly pegging out at 250+ degrees!

This year, it's doing it a lot.

Usually happens when I keep it in 3 or 4th, from spirited driving, to normal 55mph in 4th.

Hits 250 fast.

If I'm in a 55mph zone, I can drop it into 6th and coast and the temp goes back down to about 200. But once I drop it back into 4th and give it some gas it hits 250 again.

Suggestions?

Oh, and last week I filled reserve tank, just looked, it's low again. And my heater doesn't work for shit either. I'm sure that's related.
 

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DOMOKUN said:
180 degree thermostat will help as well
No it won't. Certainly not unless your wide open on the freeway anyway. But normal stop&go? No way. It'll get just as hot.

You may need to check your water pump -RUNNR. There was an impellar issue that I had. I did the whole radiator, t-stat, watter-wetter deal. Nothing seemed to work.
 

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The early impellers were causing all the overheating problems in the Viper. So I was told a full year into my misery. Dodge told me that they had to switch vendors because they were having problems w/ the plastic impeller sticking or not running that they'd put in every car. They switched to a better impeller and vendor. You may have to have your water pump replaced because you may have one of those impellers they were initially using.
 

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What year Viper? I went through a nightmare to resolve this on a 95. Here's the fix:
1. Is your facia bottle full? Mine was and the overflow caused antifreeze in facia, not a puncture. You have air in the system. Suck antifreeze out of overflow tank to cool line.
2. Replace radiator cap. I had a drop center cap and current dealer replacement is drop center but don't use it because they allow coolant to push out into overflow tank. Buy the 2001 cap which is a spring center 17lbs.
3. Clamp the push on connections between surrogate tank and overflow tank. Go to large autoparts store and buy a pack of spring clamps in the section where there is a bunch of misc parts. I think my package says Help and it's red. The two black clamps fit the first two connections and the green one fits the connection just before the tube goes into the facia. Air is drawn into system when car cools if these aren't clamped.
4. Burp car. Jack right front side up to assist, this was a tip I heard and it really worked. Burp alot.
5. Drive car for at least an hour. Wait until car is completely cool and I prefer to wait until next day. Burp again.
 

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95Viper said:
What year Viper? I went through a nightmare to resolve this on a 95. Here's the fix:
1. Is your facia bottle full? Mine was and the overflow caused antifreeze in facia, not a puncture. You have air in the system. Suck antifreeze out of overflow tank to cool line.
2. Replace radiator cap. I had a drop center cap and current dealer replacement is drop center but don't use it because they allow coolant to push out into overflow tank. Buy the 2001 cap which is a spring center 17lbs.
3. Clamp the push on connections between surrogate tank and overflow tank. Go to large autoparts store and buy a pack of spring clamps in the section where there is a bunch of misc parts. I think my package says Help and it's red. The two black clamps fit the first two connections and the green one fits the connection just before the tube goes into the facia. Air is drawn into system when car cools if these aren't clamped.
4. Burp car. Jack right front side up to assist, this was a tip I heard and it really worked. Burp alot.
5. Drive car for at least an hour. Wait until car is completely cool and I prefer to wait until next day. Burp again.
That's some good info. Thanks.
 

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I had the problem with my water pump. Car would always run hot. Have the dealer change your water pump. It may be suspect. If you want to spend some money, Archer makes a billet water pump but its pricey.
 

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I would guess it is the water pump also as mine was just replaced and was making the temp gauge jump up with any spirited driving. Looking at the water pump once out of the car there were visable cracks around the mounting area of the impellar
 

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Discussion Starter · #19 ·
and, they replaced the water pump on Friday.

As well as the 999 recall, on a 2001.

Seems my car was made 20 days after the end of the recall period, but I still had the small plates. Had a crack forming as well.

Odd...
 

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-RUNNR said:
and, they replaced the water pump on Friday.

As well as the 999 recall, on a 2001.

Seems my car was made 20 days after the end of the recall period, but I still had the small plates. Had a crack forming as well.

Odd...
Glad you got it diagnosed & fixed. :thumb:
 
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