Need HELP with my 94.Please

[viperman4125]

To those who work on Vipers,
The short of it;

Was driving to a Viper Car show in Fl, yesterday, got stuck in heavy stopped traffic, When the Thermostat was way over to the danger Zone,
Pulled over to cool, when i noticed the Cooling fan was not on. I let the car cool, after traffic was done I drove home.

Ok, so as i did research, IF it's the Module to the fan , there are none anywhere. Fan motors are seem to be plentiful.

What is the best advice ??

Thanks
Dave

 

[Free2go]

If you don't know anyone in your area, I would call JonB at ViperPartsRack. He'll know who's in your area and where to source parts.

 

[viperman4125]

Thank You ! I will call.
Dave

 

[viperman4125]

I did talk with John B. He told me to burp the system, did that, didn't work. I put alligator clips on the fan, with power from the battery,the fan works fine ?
I changed the relay for the Fan's and nothing ?
The fan will not turn on ? when Thermostat is hot ?
Should i try to change the Engine coolant temp? Sensor ????
Dave

 

[steve e]

Did you check the fuse box.

 

[viperman4125]

Did you check the fuse box.

Yes i checked EVERY fuse, Working on doing the Thermostat cooling sensor replacement, when i get a chance,
Will keep all posted of what i find out.
Dave

 

[MoparMap]

Yeah, another quick thing you can check would be to get a little IR temp gun and shoot the upper radiator hose when the gauge reads hot to see what it thinks "hot" is. That would help to determine if the sensor is reading funny or not. Could very well be the car is never actually getting that hot, the sensor is just starting to drift. Otherwise it sounds like maybe the computer could have a bad transistor that won't trigger the fan anymore. My dad just had this happen on a Dodge Stealth with the fuel pump. The pump and relay were fine, but the transistor in the ECU had gone and wasn't triggering the system anymore.

 

[viperman4125]

I did talk with John B. He told me to burp the system, did that, didn't work. I put alligator clips on the fan, with power from the battery,the fan works fine ?
I changed the relay for the Fan's and nothing ?
The fan will not turn on ? when Thermostat is hot ?
Should i try to change the Engine coolant temp? Sensor ????
Dave

Ok,
Here is where I am at now.
After talking with Indy -Steve and Jon B is / was very helpful with FREE information btw,
I ended up replacing the Coolant Temp sensor and which was a bi--tch to get too, that's when i discovered that one of the bypass hose was going bad, is when I called Jon B to buy a set. not cheap.

I filled the tank with coolant, and the recovery bottle up as well, burbled it the best that i could, started the car, the temp when up, the FAN CAME ON!! YIPPEE! THAT WAS MY GOAL.

IT WAS THE COOLANT SENSOR AFTER ALL. TY TO ALL FOR THIS HELP!

However NOW the temp gauge is reading in the yellow, I'm letting the car cool, going to burb it again.
Q: How do i get all of that air out now.

 

[ViperJeff]

Happy the first issue is resolved

 

[viperman4125]

Thanks to all!

Bottom line, had to replace 2 relays and cooling sensor and brub the system at least 5 times. Run, re-fill, cool down, 5 times.
My baby is all good now!
Dave

 

[ViperJeff]

Outstanding

 

[Steve-Indy]

Great, Dave...the best to you !!

 

[seniorstorekeeper]

My 93 Viper was doing the same thing, in traffic or just sitting there would get hot, noticed the cooling fan was just barely turning or not at all, just took a long wooden handle out of a broom and tapped the fan motor 4 or 5 times, it broke it loose and has been working for the last 8 months. Guess it does this from sitting so long and not running, brushes in motor will stick.