1990lumina Posted May 12, 2005 Report Share Posted May 12, 2005 I have a question about the stock ECM in my Lumina....is it smart enough that it retards the engine to work it less hard when the engine temperature gets to hot - thus producing less power?? I ask because today I still had my winter thermostat in the car and it was actually a fairly hot day today and my temp (on the guage) was at half all the time. The coolong fan(s) would kick in a bit past half, run for about 20secs then shut off...I know it isn't the best thing to be doing to an enigne. However, I noticed less power being produced as well...I was wondering if the ECM has something to do with it or not...I know our Suburban will start to retard the engine after 227* of something like that... Thanks - Jeff L. Quote Link to comment Share on other sites More sharing options...
john99gtp Posted May 13, 2005 Report Share Posted May 13, 2005 i dunno about the early 90s, but i did read that my 99 will retard the crap out of the timing if it is overheating. put that other tstat in! Quote Link to comment Share on other sites More sharing options...
1990lumina Posted May 13, 2005 Author Report Share Posted May 13, 2005 I plan to put it in Saturday...suppose to be cooler tomorrow so that'll help.... - Jeff L. Quote Link to comment Share on other sites More sharing options...
no1kicker Posted May 13, 2005 Report Share Posted May 13, 2005 A colder engine performs better anyways. Plus with both fans running that is drawing power. Yeah, put the cooler t'stat in, it's an easy job on the 3.1L. Quote Link to comment Share on other sites More sharing options...
1990lumina Posted May 13, 2005 Author Report Share Posted May 13, 2005 I forget what I put in there for winter....something quite hot but I forget the actual temp...I'll know on Saturday. The problem was the 'ol 3.1 wouldn't warm up worth a shit when it was -40 and whatnot in winter... - Jeff L. Quote Link to comment Share on other sites More sharing options...
1990lumina Posted May 13, 2005 Author Report Share Posted May 13, 2005 Alright, I have a question about thermostats...and I thought I'd ask here instead of wasteing more banddwidth and whatnot... Question is: Is there a 180* thermostat available for the 3.1?? I ask because I don't want this thing running to hot this summer....and yes, I will probably be driving a little harder the the average person with an old Lumina lol... Yes or No will be good enough If no, I'll put in my other one that came out in the fall....however it is the original stat, and I don't really want to put it back because, I was thinking last night, and IIRC the stat was broken - it was stuck open which was why the engine wouldn't warm up in the monring in winter... Anyway, thanks - Jeff L. Quote Link to comment Share on other sites More sharing options...
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