Join Date: Nov 2009
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Engine and trans getting hot, overhead console temp wrong
Hi, fellas. It's been a while. I've been very busy. Since my 3 issues last year the truck has been performing wonderfully, but two days ago I took the pup for a swim and when I was crawling along very slowly I noticed my engine temp was creeping above 190 which I've never seen. It was only 80 outside. It stayed around 200-210 I'd guess, and the weird thing was the overhead console temp reading was saying 102. Usually this truck runs very cool even in city traffic, etc.
At any rate, the temps went back to normal after a few minutes and I thought maybe there was a glitch with the thermostat or maybe the fan clutch was not doing its job. When I got back I left the truck running and took a rag and held it in front of the condenser and cooler and it immediately sucked it in, so I know the fan clutch is pulling a lot of air. Yesterday when I drove it the temp stayed perfect. I picked up a new radiator cap after inspecting the original and put it on because the original was showing some checking in the rubber.
Today I hooked up my dump trailer and took a load to the dump, nothing heavy by any means, total of maybe 4500 lbs behind the truck, and it was running cool the whole time, even idling in a traffic jam, then I went up a small hill to the dump and was waiting in line and the temp started creeping up again, but this time it didn't slow and was approaching over 2/3 the way up the gauge, which I've never seen before. I was watching my tranny temp and it slowly was rising, too, getting up towards 220. Neither have ever done this at idle before. I looked up at the overhead console temp and it was showing 105 and it was only 75 outside.
I was getting really nervous and considering shutting it all down but I had a huge line behind me. I crept along and then slowly everything started normalizing again, the engine and tranny cooled back down and I left the truck idling with the AC running while I dumped my load and it all went back to normal, and also the overhead temperature as well.
At this point I am thinking of changing the thermostat, but the overhead temp thing is really strange. Both times the truck was heating up, that temp was wrong, too. Does that control anything that could lead to the truck overheating? I wouldn't think so.
'97 3500 4x4 CC DRW, 4.10, Banks PP, BD tc, vb, eb, 60# springs, Torqloc, gauges, Weatherguard, B&W...
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