dunatyk

Came back from sledding today,parked truck outside for a bit while i tinkered on sleds in the garage. About an hour went by needed to run too town statred the ole girl up backed trailer up and unhooked. Truck sat idleing for 10 min while i did a couple of things hopped back in and had a check engine light, so i stopped by oreilys and had them plug in and at first we had p1693, didnt know what that was so i wrote it down and then cleared. Then i got p1693 and p0382. Cleared code and left and came home and started reading up. Started truck 3 times since then, no cel and grid heaters seem to cycle normally. Should i chalk it up to a fluke isolated incident or should i dig deeper. Also how commin is it for the ecm driver to fail causing this problem,vs bad relay or wiring issueu

HelloDuring a routine valve adjustment the shop noticed that my exhaust manifold is cracked between 3 and 4. I plan on replacing with an aftermarket, they are reccomending the BD manifold, what is everone using? Is one better than the other? Also can about a 100 deg higher EGT than normal for the last 2 years that i could never explain no boost leaks whatsoever poor economy be chaulked up to the cracked manifold???Thanks eveyone

Got everything back together and drove her around today. tems seem to be holding under 190 and modulating between 181 and 188. Never used to do this before but atleast it stays under 190. New t-stat chyrsler 180, flushed radiator and intercooler and lookat everything else and could not find any problems. Will rep[ort more as it develops

So would a crappy thermo explain the temp rising at a stop light for no reason sometimes and not others and the differnt temps seen on the dyno?

Thanks again all i will report back when i get everything back together. Radiator and intercooler will be back this morning. New stat is on the way! Its weird to me though that these stats fail so much. This will be my fifth stat the other ones failed in a manner that the truck just started running hotter, replaced stat and bingo fixed. This time it was hit and miss. Truck has always ran right at 180 -182 according to the attitude monitor and i migfht hit 188-190 when towing when evrything was what i consider to be normal but my experiance is that there is nothing normal on these trucks. Maybe i need to drive it more and exercise the t-stat. There are times that the truck will sit 2 weeks without being started

Thanks for the input guys in response to some of the replies the temps have been verified via laser temp gun so i dont think its a bad sending unit and the very first stat i replaced years ago i put a carquest in and pulled it out a month later and installed a factory chrysler stat and that has always been what i have used

Hello all I am new to this forum and hoping to find some insight. I have a 98.5 with the following mods,Edge juice with attitude, turbo modified by Gillette diesel, 275 RV injectors AFE intake and 4" turbo back.What i am seeing is some weird temp issues. Truck unloaded sitting at a stop light will start building temp for no reason starts at 180 and sometimes will go up to 190 or higher, ambient temp plays no factor will do it on a 55 deg morning or a 90 deg day. Differnt from one stop light to the next. Took to my local shop that helps me out strapped down to dyno duplicated problem but here is where it gets weird, one pull the truck wont break 190 with a 60% load applied via the dyno next pull truck truck hits 230 easily and once in a great while the truck will puff a tiny cloud of white then right back to black out of the exhaust. Fan clutch cycles normally, coolant shows no signs of combustion contamination not a 53 series block water pump looked great and truck uses absolutley no coolant. Radiator is five years old was clean externaly and passed flow test at the radiator shop earlier today. T-stat is probably 4 years old and this is the 3rd one but last time i replaced it the sympotoms were not like this. Engine has 102k on it and probably gets 3 to 5 k a year on it? i would really appreciate some feedbackThanks in advace