Engine overheats on highway with AC on
- Thread starter DOUBL3 D
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I had to drive it to an underground garage tonight because a hail storm came through and I didn't want any damage. However it made me want the car so much more. It's a love hate relationshipIJ.;1863255 said:LOL Patience GrassHopper
Pepboys might have a block test kit in stock.. or another big chain.
Thanks for everyone's help so far its greatly appreciated. This will he my first big fix on a car with trouble shooting (my old Porsche 914 doesn't count) so I'm a excited/nervous. The only good news is that I've saves enough money to hopefully not have to worry about it just yet.
As for the compression testing kit, I'm going to call around tomorrow and try and get one
Alright, so its been a little bit but I do have some news. Haven't done a compression test as I still haven't had access to any tools. However when I shit the car off it started to smoke from the thermostat area, close to the head it looked like.
Here is a video of it smoking
http://www.youtube.com/watch?v=c2PQLj0gPrM&feature=youtube_gdata_player
Also, would parking up hill make my coolant in the bottle go back down to low? Here is what it looks like on the inside for those who asked
Here is a video of it smoking
http://www.youtube.com/watch?v=c2PQLj0gPrM&feature=youtube_gdata_player
Also, would parking up hill make my coolant in the bottle go back down to low? Here is what it looks like on the inside for those who asked
replace the waterneck gasket to head
and parking on a hill with front end up higher will help air bubbles escape
and parking on a hill with front end up higher will help air bubbles escape
coolant leak means your loosing coolant
loss of coolant to an extent can cause engine to over heat
missing coolant is now filled with air bubbles
which can cause overheating
loss of coolant to an extent can cause engine to over heat
missing coolant is now filled with air bubbles
which can cause overheating
jonahs_supra;1864825 said:coolant leak means your loosing coolant
loss of coolant to an extent can cause engine to over heat
missing coolant is now filled with air bubbles
which can cause overheating
Ahhh this makes sense. I'm still a noob about the coolant system
DOUBL3 D;1864855 said:
you'll learn...im still learning
BTW...the water neck is held on with 1 bolt and 2 nuts...i believe to be 12mm
let engine cool down, clean area around water neck, let it warm up and see if you can see the leak
depending on what year your engine is the turbo coolant feed off the water neck will either be a banjo or fitting with a 90 degree elbow
good luck
The thing is with a 7M you don't get a second chance with cooling issues, if you don't sort it you'll be looking at a 2K rebuild if you continue to drive it. :nono:
jonahs_supra;1864860 said:
IJ.;1864911 said:
She's been parked since I got to St. louis, I moved it for a storm but that's it. I really hope this gasket thing works.
I have no idea how to get to it so I will have to look into it. It looks like there are a ton of sensors and what not in the way
Actually, air is a pretty good insulator. And an air pocket on the ECT sensor might not show up on the temp gauge.
meaning when the air around ECT sensor is hot and showing your engine as overheating
i can justify to this actually on my old 87
first off i had a BHG and knew about it(blowing exhaust into cooling system)...small leak though
on a hot day after letting the car warm up about 2 minutes i would leave for work....2 miles down the road was a 15% grade uphill
right at the tippy top of the hill my autometer coolant temp gauge would show 220-240
this would happen for the next 5 miles of highway driving til finally the air bubbles worked their way out and coolant was now surrounding temp sensor
i can justify to this actually on my old 87
first off i had a BHG and knew about it(blowing exhaust into cooling system)...small leak though
on a hot day after letting the car warm up about 2 minutes i would leave for work....2 miles down the road was a 15% grade uphill
right at the tippy top of the hill my autometer coolant temp gauge would show 220-240
this would happen for the next 5 miles of highway driving til finally the air bubbles worked their way out and coolant was now surrounding temp sensor
Alright so I took the coil cover off today and found where the smoke is coming from. Looks like what Jonah supra said was right, it looks like there has been some slight leaking there too. Here's a video and a few pics
http://www.youtube.com/watch?v=pWuZgI20Xqg&feature=youtube_gdata_player
Any thoughts? I sound like an idiot in the video, enjoy
http://www.youtube.com/watch?v=pWuZgI20Xqg&feature=youtube_gdata_player
Any thoughts? I sound like an idiot in the video, enjoy
heres is a picture of water outlet housing
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=EM&P=32
see the triangle shaped gasket? if so then that more then likely the culprit of our leak
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=EM&P=32
see the triangle shaped gasket? if so then that more then likely the culprit of our leak
jonahs_supra;1865214 said:
I think that what it is, there's some gunk where it looks like something has been looking leaking there. I need to snag that gasket and report
Alright so I dugaround in the engine bay a little bit and found the smoke is coming from underneath the CPS, I'm stumped at this point because there is no smoke lower than the exhaust manifold. I need to see how to get to the waterneck gasket because there is residue like something was leaking in there. Here is what it looked like after I cleaned it up, the smoke is coming from this area
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