Question about 1988 Jeep Wrangler

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No heat no blower 1988 jeep yj - 1988 Jeep Wrangler

Posted by Anonymous on

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Mikey108
  • 475 Answers

SOURCE: 1989 jeep yj no heat

Under the hood on the pass. side firewall are two heater hose lines. Start the car and let it get at normal operating temp. One of the hoses is the "in" to the heater core, if you touch it it should be hot. The other hose is the "out" of the heater core, this hose should be warm and not really hot like the "in" hose. If the hose going in is hot and the other cold, then your heater core is clogged. There is a valve connected inline with one of the heater hoses, this is the heater control vavle.
If the valve does not open, you will not have any heat either.

Posted on Dec 10, 2008

  • 11 Answers

SOURCE: No Heat 1988 Jeep wrangler

any time you do not have hot water in the hoses to the in side of the vehicle, your water has quit either due to you having only water in the system and it froze in the winter and you started it . or the propeller just broke of old age. make sure u dont have a check valve in the hoses going to the heater core in side the car. valve would be under the hood somewhere in the duration of one of the two hoses, which is the feed. this should do u good

Posted on Feb 07, 2009

MYHUMMER H2
  • 137 Answers

SOURCE: 1988 jeep wranger yj Jeep not

May have a small short or the wrong fuse.

Posted on Feb 08, 2010

  • 1857 Answers

SOURCE: 95 Jeep Wrangler YJ...No heat, temp at about

It should be 200 degrees. If your running cold the only thing that regulates temp is the thermostat. If it is indeed 150 degrees thats why you have no heat.

If you replaced the water pump and the radiator for this condition then it was a waste of money. If you had a water pump or radiator problem it would overheat.

The fact that your blowing cold air tells me the that you really are 150 degrees or the heater core is plugged.

Posted on Mar 10, 2010

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1 Answer

How to remove heater core in 95 jeep yj


ok, so you know where it is nor not?
its in the heater box.
and the box is in the dash
so, the box needs to be removed.
then box split (screws)
then replaced,
the FSM covers this,
ive posted this over 100 times here.
again.
YJ, the real deal. real jeep book;
yj 93 is here for free, they are same.
heating and air. cond.... yes HVAC.

http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service


pdf page 41 of 51
starts there.... every word.
clear.

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1 Answer

Ac blower motor stopped working


YJ car.
the blower is dead. is that it?
does it blow full speed on high
do you have 12v on terminal A of blower , term B is 0v ground
got that, then the blower is dead.
if not 12v, then the controls are bad.
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

page 47
4 parts to make blow
1: fuse 12 good.
2: switch heater /on off.
3: high, med,low speed, use high, its direct.
4: the blower,
one of those points has no 12v on high,
use a simple voltmeter to find the failed point.

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1 Answer

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Jan 15, 2012 | 1988 Jeep Wrangler

2 Answers

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sounds like your ECM might be bad. Is there anything else that will turn on besides the lights? It could just be a main fuse. I'd start at the interior fuses if any and then go to the main fuse block and check for any loose wires or blown fuses first.

Jan 13, 2010 | 1988 Jeep Wrangler

1 Answer

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Jan 03, 2010 | 1988 Jeep Wrangler

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Looking for Service Repair Manual Jeep Wrangler YJ


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Jul 10, 2009 | 1992 Jeep Wrangler

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