Question about 1991 Buick LeSabre

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Will a bad heater coil cause jeep to overheat

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Check your thermostate

Posted on Oct 16, 2013

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1984 jeep cj7 258 bad distributor cool ?


Do you mean the coil?
I'm not sure what year they started using the Ford computer on the 258, but I can say that the distributer has both vacuum and mechanical advance on it, so you can (maybe not 100% legally) bypass it. Get an MSD 6 with magnetic pickup and use that. Jeep will run better than new.
BTW, the only way a coil goes bad is if it overheats and melts the plastic around the wires. Check with volt-Ohm meter to be sure.

Nov 20, 2015 | Jeep Cars & Trucks

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How fix heating coil


make and model of vehicle?

heater core will not cause your car to overheat, probably a plugged or defective thermostat. If you are getting steam on the windshield? you have a bad heater core.... if not, then focus in the thermostat, located on the engine block usually attached to the upper radiator hose.

Apr 02, 2015 | Cars & Trucks

2 Answers

If my top radiator hose gets hot and not my bottom one is that a sign of a bad thermostat


Apollo's answer likely correct but can also be caused by an internally delaminated hose or severely blocked radiator.
Flow diagram attached-

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Nov 20, 2014 | 2000 Jeep Grand Cherokee

1 Answer

2011 jeep liberty heater blows cold air


gas not diesel right?
what engine? option? size?
there are only 3 causes (and many parts to fail)
  1. engine coolant not hot at 180F or more.
  2. said coolant not flowing Through heater core (feel the 2 hoses?)
  3. air not flowing over heater coil. , damper stuck closed?

once the above is found.we can diagnose why?

the FSM covers all this , in the HVAC chapter.
say engine is hot, and core is hot.
you check the damper and its stuck closed.
?
1: controls not telling damper to move. (falling)
2: damper motor bad. (called the HVAC acuator by jeep)

on this new of car, we must scan it, the scan tool that supports
jeeps will set HVAC errors aplenty.
my innova 3160 can do that.

my FSM dont do that new a car.

or
engine not hot
heater core not hot
or damper door stuck closed on core, blocking heat.

Mar 21, 2014 | 2011 Jeep Liberty

2 Answers

What problems would a bad heater core cause


A bad heater core could cause a couple of isses. If it is plugged internaly you would get no heat. If it is leaking you would have anti-freeze dripping into the cab on the right side or dripping under the car in the area of the right floor board.

Dec 31, 2011 | 1998 Jeep Grand Cherokee

1 Answer

Heater coil is leaking in my 2005 jeep grand cherokee car


Happened on my 05 Jeep. Had antifreeze leaking into the interior. Brought it into the mechanic and there was a spot on the piping (i guess that's what it would be called) that was rusted causing it to leak. It's all one piece so the whole heater coil had to be replaced. Unfortunatley, not cheap. Cost me about a grand. (I'm trading in my Jeep) If you knew how to replace the heater coil yourself, I'm sure it'd be cheaper but from what the mechanic told me, it's a common problem with Chrysler's vehicles. That along with the rear differntial breaking, which was another grand I put into my Jeep.

Aug 31, 2011 | 2005 Jeep Grand Cherokee

1 Answer

Car seems to be heating up dont know if it can be a stuck or bad thermostat


thats a good possibility, though most thermostats get stuck open, not closed. check the coolant level to make sure its ok, a lot of times the water pump will go bad, and allow air to seep in causing air pockets, thus making the vehicle overheat, also is it blowing good heat?? might be heater core leaking.

Nov 29, 2010 | 2004 Jeep Grand Cherokee

1 Answer

Leaking water


either the heater coil or you have a hose that is cracked or off.

Mar 12, 2009 | 1998 Oldsmobile Achieva

1 Answer

I have an '88 Toyota window van. It overheats and heaters don't w


Check the antifreeze usually if the heater is blowing only cold air you are low on antifreeze and the heater coil is not being heated by the flow of antifreeze

Mar 12, 2009 | 2006 Ford Explorer Sport Trac

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