I have 99 Silverado when temps start dropping into 60's or lower truck idles very badly surging real high then just about stalling out to even dieing completely. runs fine in warm weather...told it is mass flo sensor is this the case? I have 99 Silverado when temps start dropping into 60's or lower truck idles very badly surging real high then just about stalling out to even dieing completely. runs fine in warm... » Read More I have 99 Silverado when temps start dropping into 60's or lower truck idles very badly surging real high then just about stalling out to even dieing completely. runs fine in warm weather...told it is mass flo sensor is this the case? « Show Less
1543935
All I can say is check your engine code and see if that is what it tells you.It could be. My truck also did the same thing a few times. My truck runs smooth like when I purchased in 2002.
246217
I got the 150 watt model like this and placed it on thin steel plate (with intent of bolting that up to a small engine that doesn't have a good surface). Without it bolted up to the engine, the plate temp was 140 degrees after 1 minute, then ~200 after another minute and I pulled the plug then. After letting it cool enough to handle it I bolted it up to the small engine. To begin with the engine temp was 42 degrees and after having it plugged in for 10 minutes the oil sump area of the engine was at ~65 degrees. I've not tried going overnight, but seeing the temp go to 200+ does show the possibility of how hot it could get (and one guy in a review of one of these says "unsafe in any application...cuz has no temp regulation..."). Of course other considerations include how cold is it for you (are you in a north state like Minnesota?) and where are you placing it (on an oil pan where you're just heating the oil or on a car engine block that's real thick). I may try a test of leaving mine on the small engine for at least an hour to see how hot it gets (both near the base where it is and near the top of the engine) and will add a post if I do.
1008966
Sometimes it will tell you or lead you to the problem. Sometimes your check engine lite will come on and go out, this you will need a little more knowledge of what's going on. For instants , engine does not reach operating temp. In time witch is preset in the ECM. A lot of people change the temp sensor, but a lot of time it's the thermostat that is no longer accurate.
1160296
I just installed this on a 2005 Nissan Titan. I made sure that I did my research as to how to bypass the factory TXMSN Oil Cooler, but once installed it has made the world of difference. I do not have a digital read out, but on my analog TXMSN temp gauge it never reaches about the halfway mark, before it would always read above. This is sitting in Hawaii traffic with high humidity. My TXMSN seems to run a bit cooler and also shifts more smoothly. Definitely worth the buy and the time to install. Please let me know if I can be of further assistance. Thank You!
13895
According to the Troubleshooting section of the instruction manual, the unit will not operate satisfactorily if the temperature is below 41º F. I would imagine that all higher temps are okay unless the unit overheats in extreme temperatures, but that was not mentioned. I hope this helps. Rx
2084152
I have ran a 3s in my stampede with 23/80 and it does get hot, it is do able but I would take frequent breaks to check. I had a 18/76 in there and ran stone cold. Going to try the 18/80 once I get a new pinion. My 18t took a dump so thats why the 23t is in there. Hope this helped.
1813828
I am using mine as I'm writing this (SNOW storm in Atlanta for cryin'-out-loud!!!) on my 2007 Silverado and it has always done a perfect job in the snow...or icy conditions. I'm very happy with it!!
2234016
I've not had a sensor fail, but I did have one that was a bit slow to 'wake-up' one morning when it was particularly cold. In this case, the affected sensor continued to flash (as all of them do when you get into the car and haven't yet triggered the sensors by exceeding 10mph approx), whereas the working sensors went steady.
1774651
My guess is that you have the "low temp" value set higher than what it is sensing as the current temperature. I never use the low temp thing so I have it set at 35 degrees and I never have the issue you are describing.
790751
We have left this in the truck in mod hot temps (80s) for several weeks w/o a problem, but when it started getting into the 90s, we brought it inside. I don't trust it for a long period of time in extended heat.
774586
I have been very pleased with the performance makes the truck come alive. I have noticed that the truck shifts better. It all depends on which setting you are in. #3 gives best mpg and great for Highway driving or showing off but shifts seem harder when just city driving. I use #2 setting all the time shifts feel good and major performance compared to stock plus 2-4 mpg's better. I only use # 1 when towing and seems fine. Hope this helps.
515498
Hey man I have an 06 evo. It took prob about 100 miles for warm idle to go back to normal. But maybe a few hundred miles for the cold start idle to go back to normal. It takes a while to relearn. Good luck! Great product, great price
556747
i tried the milege mode on my 06 gmc 2500hd with 6.0L and 4l80e trans, it made the truck feel really sluggish and didnt seem to help the mileage any so i switched it to the performance mode. now it didnt make the truck super powered but it does seem peppier over stock and the trans doesnt gear hunt unloaded and less gear hunting when loaded, nice firm shifts but not neck snapping. down side is i have to use 90+ octane but truck seems to get a little better fuel mileage on the highway, city driving well its a heavy truck so i dont expect much from it lol
13896
According to the Troubleshooting section of the instruction manual, the unit will not operate satisfactorily if the temperature is below 41 F. I would imagine that all higher temps are okay unless the unit overheats in extreme temperatures, but that was not mentioned. I hope this helps. Rx
701153
yes, remember its multiple spark under 3000 rpms ..i used to have run on after shutting my car off and that's gone ..never had it since i installed the box..also the idle is smoother,gas mileage improved as i opened the spark plug gap from .35 to .50 ...also, hit the key and BAM! starts right up too..i called msd and they told me the only difference between the al6 and the street fire boxes was that one said msd and the other said street-fire.. ;))
1617447
Personally, unsure because I live in the south which typically does not receive much snow. Also, my truck remains in the garage unless it is be drove. Sorry I cannot help. Best...
1236129
It was the correct sensor for my 05 Cadilac Escalaede. Don't know about the Silverado but my guess would be they are the same. There is no need to replace both sensors as these sensors rarely fail. Did the OBD reader indicate the left sensor being bad? If so, you may have received a faulty sensor.