Newbie Needs Help: Overheating

limp

wrap a little cheese around it and its a done
Oct 4, 2020
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someone on here said it lastnight saying that the heater core helps cool the coolant I could have got it wrong what he said I'll look it up but thank you again
If you have the heater turned ON, YES it will help .... Didn't you watch Gary Busey in Cannonball run??
 
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Mustang5L5

Put lubricant all over the balls
Mod Dude
Feb 18, 2001
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Not at all. Look the coolant lines together and you can run indefinitely like that. Might be a tad chilly depending on your weather, or not.
 

Mustang5L5

Put lubricant all over the balls
Mod Dude
Feb 18, 2001
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Just cap them all at the source. You should be able to cap the EGR and smog vac lines at the intake manifold and the car will run. If it still runs like crap your problem is elsewhere. Once you fix that you can reconnect all the vac lines you need after
 
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mattys91gt

Active Member
Feb 3, 2022
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Just cap them all at the source. You should be able to cap the EGR and smog vac lines at the intake manifold and the car will run. If it still runs like crap your problem is elsewhere. Once you fix that you can reconnect all the vac lines you need after
it's only at idle now car runs and drives great the rpms go up and down maybe a few hundred rpm but with my foot on the brake it's a automatic it wants to stall
 

Mustang5L5

Put lubricant all over the balls
Mod Dude
Feb 18, 2001
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Smoke test for vacuum leaks and I would do a compression test since you say you are randomly overheating.
 

manicmechanic007

Mustang Master
Sep 26, 2017
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I did say that the heater core is an auxiliary heat exchanger
And I will stick with that
No it will not overheat without it and no you do not need it to prevent overheat
I said it helps to prevent overheat (extra coolant capacity and another heat exchanger)
You will be damn glad you have one net time it does overheat
You can turn the heat on high and maybe save the engine
 

mattys91gt

Active Member
Feb 3, 2022
263
18
28
40
Plymouth Massachusetts
I did say that the heater core is an auxiliary heat exchanger
And I will stick with that
No it will not overheat without it and no you do not need it to prevent overheat
I said it helps to prevent overheat (extra coolant capacity and another heat exchanger)
You will be damn glad you have one net time it does overheat
You can turn the heat on high and maybe save the engine
I wish I had heat I don't think the ac works and your right I misquoted you I figured I did
 

manicmechanic007

Mustang Master
Sep 26, 2017
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Does the compressor turn? The inside guts?
You can probably get the A/C up and running
Real common to be down a bit on freon and then the a/c clutch cycling switch will disable the system
Also real common to be full of freon and the cycling switch just fails and prevents a/c clutch operation
That's the one on the tank or receiver drier or suction accumulator