Grand AM :: No Heat And Low Engine Temp Reading Below 100
Dec 16, 2012
I have a Grand Am SE 2001 and recently, since I got home from college for break, there has been no noticeable heat, and the engine temperature gauge is reading below 100. I checked the heat of the input and output hoses near the firewall and both were warm (warmer than the air blowing in the car) but not hot to the touch and this was after 10 minutes of driving 40 mph. Right now my only ideas are the thermostat or the heating core, what to look for? I'm not sure, short of replacing both, how to progress. Also wondering if driving it in this state is bad for the vehicle, I can't seem to find anything wrong with the engine and all other parts are working fine, not much chance to fix it for a few days.
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I was recently given my first Volvo. Its an 88 240dl. While driving my temp gauge climbs up to the red and sometimes hovers inside of it. It normally climbs up at stop signs and comes down on straight always then climbs right back up close to red. When the gauge was in the red i stopped the car and popped the hood open to see that the engine was not actually overly hot.
first i replaced coolant. nothing
then i replaced the thermostat. nothing
flushed radiator. nothing
Today i finally had enough and decided to switch out the water pump with a new one hoping that it would solve the problem seeing as it still had the factory one on. It did nothing. the gauge continues to climb up. I did replace one of the two senders in hope that it would fix the gauge reading but nothing.
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I have a 2004 Grand Prix and it is displaying the symptoms of overheating but the temp gauge is not going above normal operating temp. I replaced the thermostat twice, and after driving for about 10-20 mins coolant comes out of the overflow. I'm at a loss, I'm thinking temp sensor(?) But I don't want to keep throwing unnecessary money into it. The fans work fine, the heater blows as it should.
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Recently the temp sensor on my car goes all the way to H and then the light comes on saying I need coolant. It only seems to happen when I have the heat and/or defrost on -- if I turn the heat off the temp goes back to normal within a minute or so. (no problem using rear defrost)
First time it happened I pulled over, checked coolant level and added a little. The next time it happened I looked under the hood the next morning and coolant level was just fine.
Happens more often when I'm driving around town than on highway. Usually within about 5 minutes of driving in the morning the engine temp is all the way to H.
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First background: G2 car has 215,000 mi and recently got P1121 scan code, so I replaced the coolant control valve. that's when high coolant temp and no cabin heat started.
on CCV top nipple connected to hose that had a dot on it and hose goes under inverter cover on right, next nipple down went to hose slightly to left of first hose, bottom hose goes to thermus can. initially ran car in diag mode with high heat, no heat in cabin.
so I got a Autel 519 scan code reader and I see now that the only code is a P0505 (idle air control malfunction)
taking car down my road for short test run, I turn off cabin heat completely and watched the ECT. after a while it climbs to around 220, then while engine is running quickly goes to 245F then 260F. At that point in time (around 245F) the high temp indicator lights up, temp stayed at 260ish so I return home. With car in park, cabin heat off - the temp returns back down to 220F. if I rev the engine temp again climbs.
I have gone through all suggestions, open radiator bleed valve, manually 'pumped' coolant hoses, turned on/off high heat in cabin and finally with car off removed and jumped the CHS multiple times for about 20secs.
Have purged the coolant system over period of days and coolant appears to be full as level is near top of radiator cap, no bubbling, no gurgling.
However 2 mentioned problems continue... I am starting to suspect coolant thermostat but it would seem strange that it would go at precisely the same time as coolant control valve.
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Truck is a 1999 F-250 with manual climate control with A/C.
Heater core issue:
Heat is not very warm after engine is fully up to temp. Would like to back flush the heater core without damaging or making it leak. How should I do this safely?
Secondly, if I do make it leak, how hard is it to change out?
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The outside temp reading in my GX is not accurate, it's showing 70-75 when its 91 outside. What do I need to do? Just replace this sensor? [URL] .....
I'm thinking the ACDELCO at the bottom of list?
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This is kind of a strange (minor) issue, but I noticed just recently that the outside temperature reading on my 2012 Sonata GLS is registering about 10 degrees hotter than the real outside temperature. This is driving down the road, not parked in the sun. It showed 91 degrees the other day as I was driving home from work, when the actual high for the area was barely 80.
My thoughts were that something was blocking or covering the sensor for the outside temp reading, but don't know where that sensor is located to check it...or if there might be some other way to "reset" the temp reading?
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Just replaced both inside and outside temperature sensors because my AC was out of sync with what the temp was reading on the dash AC....seem to work for me...I'm also including some picks on locations...about a 30min job.
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I've got a 2001 Volkswagen Jetta 1.8T Wolfsburg Edition.
Recently the temp gauge sits at 260* as soon as the car starts, but it's not actually overheating. Car runs/drives fine and will do so for many, many miles. Even in stop and go traffic. Was told the thermostat was replaced, but that didn't fix the issue although it doesn't sound like a thermostat issue since the car isn't actually overheating. Coolant is topped off as well.
I am thinking it's a bad sensor. Where is it located on this car?
Car is a friends and she said she took it to a shop to have the coolant checked and they were also the ones who did the thermostat.
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The water temperature in my 97 3 liter Aerostar seems to be higher than I would expect when climbing a mountain road with the aircon on full. It was only about 75 degrees F and the elevation went from 300 feet up to 2,400 and the gauge was at 3/4 to the red zone.
I don't use aircon much here in the south Bay Area but as I recall the gauge on both my 96 and 97 Aeros was straight up during such climbs. The 96 is out of coolent so I can't compare it now.
The reason I'm rather concerned is we are about to leave on a 2,500 mile road trip with 4 people and lots of gear through Nevada and Utah and we'll climb a lot of passes in 90 degree heat or higher.
The mileage is about 135k and the water pump was replaced about 2 years ago. The radiator was replaced at about 100k.
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It is a garage queen 1994 4.0 AWD with 42,000 miles in nearly perfect shape. Except for the dent in the rear on the passenger side.
I have posted a picture of the dash when going down the road. As you see the engine light is on. It comes on intermittently, pulled the codes, indicated MAF, 02 sensor, running lean/rich. Runs like a champ, no hesitation, still gets up and goes, gets the appropriate gas mileage. I replaced the 02 sensor with the original Ford Part. Didn't cause the engine light to stop going on after about 20 to 60 minutes driving, sometimes it doesn't come on at all.
Could this thermostat be running too cool and causing the engine to throw those codes? Would gladly take it to a mechanic, but seems like it might be a fishing trip with my dollars for them. Next I was going to replace the MAS myself, easily done with the original remanufactured part at a cost of 150.00, 70 for the core, but don't want to chase my tail with these engine lights on when it runs nearly perfect.
Have sprayed the MAF. Checked for air leaks anywhere. Done all the things I could do by just lifting the hood.
So the picture shows the Temp gauge barely touching the N flying down the road at 70 on a level surface, outside temp about 60. Reading the posts says they all run in the cool section of the temp gauge.
So the question is, do they run this cool? Heater works fine and the gauge goes up past the N resting before the O when going up hills on the way to Tahoe. Is this a thermostat problem on a 20 year vehicle with low mileage, or am I going to have to bite the bullet and let the mechanic go wandering through the vehicle?
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My outside temperature reading on my '05 (6.0 PSD EB) Ex has recently gone black..no reading. I haven't noticed any other issues, just no outside temp readings... Do these sensors go bad or ? Is it a big deal to change them out?
I was told it should be located just to the side of left hand (drivers side) headlight behind the grill, a small black cube (approx. 1 inch square) with three wires coming out of it. However, I'm not finding it there.
Where is the temp sensor located? Is there a fuse covering this sensor?
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I washed the car yesterday and the temperature reading on the AC display was reading really low a couple of hours after washing (outside temp 95, reading 79). it stayed that way for 20 minutes then only went up 3 degrees.
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I have a 2005 Toyota Matrix with 250k on it. It has run like a champ so far, with the only problem being an ECM recall last year. I have noticed a few problems recently; the heat blows cold air for quite awhile, and the temperature gauge, while not reading hot, sort of fluctuates between normal and a little warm. When the ECM was being replaced, the dealer said the serpentine belt was overdue for replacement, and I know he's probably right about that. He also said the water pump needed replacing, although I have never seen any signs of leaking. This car has been a champ, and I'd like to try and get another 100k out of it if possible. I'm pretty handy around a car, I've replaced an alternator and radiator before, and I'm working on a limited budget, so if any of this is doable by me, I'm up for it.
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I have a 77 F100 2wd 302/c4. I recently replaced the rear plate to my gauge cluster after it crumbled to pieces. I swapped all the gauges to the new plate minus the fuel gauge since it decided it couldn't live if livin was without the old plate. I have a gauge cluster out of my 75 and decided to swap in my fuel gauge from that one. I put the cluster in the truck and fire it up for 10 mins or so and everything is working great except the temp gauge isn't moving. I figure it romeo and Juliet with the fuel gauge so I just swap all gauges from the 75 into the 77 cluster except the speedo. Same result.
So I figure its the sending unit now and maybe both gauges were fine to begin with. I put in a new sending unit and now the gauges works but the needle sits on the P in the word TEMP on the gauge which makes me uncomfortable. That's about 1/4 inch or so from being past the end of the gauge. I don't believe the truck is running that hot. The gauge was more or less straight vertical before the swap sitting right at the end of the E on TEMP. Did I get a bad sending unit? Is it a bad ground on the gauge? Was I supposed to take off the teflon tape that came on the threads of the sending unit? I'm gonna try removing that first and see if it lowers the needle.
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I have a 2001 Excursion Limited V10. 146000 miles 2 wheel drive. I have had it about a year and this is my first winter to really have experience with her.
When the outside temperature is very cold and the engine is cold from sitting all night, at start up, the oil pressure gauge reads nothing and the oil pressure/temp idiot light is on. Only does this during the first very cold start up or after sitting and engine getting very cold again.
I can drive just a short distance (2 blocks) and both gauge and light go to normal and stay there for the rest of my drive. I am using a quality 5/20 oil and filter and the level is good. Warmer days it has never happened. Truck runs fine, smooth idle, no "limp mode". She has not had any recent work done. All the other dash gauges read fine.
There is something about really cold temperatures that have to be causing the issue , I think. ??
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Every now and then when I slow down the temp gauge drops about 1 notch below its normal 200 reading. It's nerver done this before. Car runs great and heat is strong. Is this a sign of a failing thermostat? If so, where is the thermostat located, is it hard to replace, and should I get OEM or is OTC ok? Car has 89K on it.
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I have a 98 trans sport and the temp gauge is reading low. Only on the first line when driving then when i pulled into the garage it went up one line and heat got warmer. Felt both upper and lower hoses and i can press them both in Fluids are full no leaks anywhere. oil is good tranny fluid is good. I just got it on a trade it runs and drives great no problems at all.
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I just purchased a 2014 Avalon XLE Touring. One thing that seems to be a slight problem is the A/C setting. To get the car to cool down I have to turn the setting down to about 66 to make it comfortable and I know it is not 66 degrees in the car. Is there some way to calibrate the temp reading?
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I haven't been able to find the solution to change C temp readings to F on my 2009 ES350. The car is Canadian and I'm in the US and although it's not a big deal I'd like to change it over. The importation company already changed over the speedo and so the cluster reads F degrees and Miles. Just that one last change to make it all match up.
I read an old thread on the earlier generation that the body control module needs to be changed. But, nothing on this generation. Lots of people trying to go metric from English so maybe we could even trade parts to make it happen.
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