Hi All,
I have a 97 Ram 1500 Sport with a 318 (5.2), two wheel drive and automatic. I had the motor rebuilt a while back and ever since the coolant temp runs about 220. I took a 2600 CFM fan and put on it and when I turn it on the temp starts to drop then the ECM adjusts and takes it right back to 220. I'd like to find a programmer for it but haven't been able to locate one that will let me change the temp setting (has a 180 thermostat) on a 1997. I know I can buy a new ECM but are there any other options?
Thanks to all for looking at this.

 

I think I'd check the T stat first.(and other things) The pcm has nothing to do with it (t stat). And why are you running a 180? Also if you are going by the factory gauge on the dash, it is common for it to be totally wrong. The temp sensor could be bad too.

 

Thanks!
The tstat was replaced during the rebuild with a new 190. When then temp was high I pulled and had the radiator cleaned (not done during build) and replaced the Tstat with a 180 to try to bring it down, didn't work. I'll have to check the guage but it registered fine until the build. There seems to be a lot more heat coming out from under the hood as I walk by after driving. Any other ideas will be greatly appreciated.

 

Check the wire at the sensor. (you have two, a two wire, that the PCM uses, and a one wire for the gauge in the dash) Make sure it is clean and tight.

 

Thanks, will do.