Question about 1985 Jeep CJ7

1 Answer

Have an '85 CJ7--put in new radiator and thermostat, new water pump--fan shroud installed, Jeep still overheats, motor runs good, doesn't act like it's a head gasket problem????? Can't figure out why it's overheating...any suggestions??

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 17 Answers

Take out the thermostat and run it like this for while. If the motor still over heats: Look over by the battery, do you see where those two hoses from the radiator and the water manifold are going into the firewall? Take the hose going to the manifold from the firewall off of the connection at the firewall and connect it directly to the water pump. I think the manifold hose is the one on the right just make sure it's not the one coming from the water pump. You'll have to remove the hose coming to the fire wall from the water pump where it is connected at the pump but, that's OK for now just tie/tape it to something out of the way. Now then, your water pump will be sending water directly to the water manifold without any obstruction. When you run the motor for a little while and find that it stays super cool, I then suggest (if you want any heated air this winter) that you have the heater core (there behind the firewall where the two hoses were going) flushed clean or replaced and hooked back up. Once water can flow freely through the system your thermostat can probably be reinstalled w/ out overheating the motor.

Posted on Aug 10, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Jeep cj7 renegade with 360 amc motor rebuilt 5500ks ago three core radiator ok condition no thermostat overheats


check your thermostat or a collasped hose also make sure the radiator is not stopped up

May 14, 2014 | 1983 Jeep CJ7

1 Answer

I have a 2000 jeep cherokee sport. It overheats while sitting in one place too long. I have replaced thermostat and cooling fan comes on when it reaches 220. The fan stays running but the check gauge light...


Well, yes and no.
The shroud helps the fan pull more air thru the radiator.
So yes the broken shroud could be a factor, but you could also have problems with air flow thru the radiator. Or restrictions inside the radiator for coolant flow.

Feb 24, 2013 | 2000 Jeep Cherokee

1 Answer

I have a 95 jeep grand cherokee that overheats i replaced the water pump, thermostat and raditiator what else could it be ???????


Brian, I also replaced my radiator and no benefit, it was defective.reinstalled new one; shroud was broken, and replaced. Remember replace your radiator shroud, it must be replaced for directing cooling air over engine. Check what type of anti -freeze your using,there is a difference, and ratio of "mix", Check radiator cap pressure, and temperature of thermostat. ? electric fan cooling, or mechanical? If electric, has 2 settings high and low, could be defective in one or the other (has a relay module somewhere, test it for operational order both high and low.Check your oil make sure you don't have a blown head gasket, . it doesn't take much loss of coolant to lessen pressure and heatup, can sometimes burn coolant out of exhust pipe as water. Oh and make sure you aligned your new thermostat withnotch on its housing and installed correctly. Had a similar problem, I can't say exactly which corrected it, but I did them all and so far problem has not recurred, did change to high temp thermostat. I was actually thinking of getting a new Jeep, but now this one has a new problem, and its a real test of will power, I believe they've made the Jeep with the intention that no-one other than their certified mechanics should work on them. they never considered anything like a national disaster , where there would be no mechanics to work on them, and we might have to do it ourselves, do you realize how sensative the PCM is and how much they cost? if you can even get one?

Aug 01, 2012 | 1995 Jeep Grand Cherokee

1 Answer

1998 Cadillac Seville SLS with overheating problem. Head gaskets repaired!! cost me 4K, all hoses checked and look good, belts replaced etc etc. Still overheats!! The cooling system (heating/AC) is acting...


did you change your thermostats there is one on the motor and on radiator. i have a toyota and was told my motor was shot it was overheating and loosing coolant my prob was water pump and the radiator filler pipe had a pin hole in it. if you do not have water in your oil or oil in the rad then it is probabnly not the head . also if the fin on your radiator are bent you may need too change radiator..Also your radiator fan may not be working, you can hook direct or buy a new fan relay sensor that plugs in at the bottom of raiator, you can check this by getting motor hot and see if fan kicks on

Jul 23, 2011 | 1998 Cadillac DeVille

1 Answer

1997 escort overheats unless the heat is on full blast. Put in new thermostat. Fan work when wired directly to the battery, but does not come on otherwise


Hello and welcome to FixYa! If you have overheating problem, it can lead to multipleissues. You may be running on low coolant that's why the vehicle overheats. Ifthat's the case, please add coolant and make sure that it sits on the rightlevel, too much coolant can cause overheating too for coolant will overflow. The vehicle may have a faulty or worn out radiator blowermotor that's why it overheats. If that's the case then you will need a blowermotor replacement to resolve the issue. If the radiator is clogged with dirt and rusts this issueoccurs too. The coolant doesn't flow normally on the cooling system if it'sclogged. If that's the case, I strongly suggest that you have the radiatorflushed to drain out dirt and rusts. If you think that the radiator served youenough then it's better to have it replaced. Please do check the radiator hoses, If you have worn outhoses it can cause coolant leakage which can result to overheating. A tiny holeis good enough for the vehicle to overheat. A faulty thermostat sensor can cause the issue too. If youhave worn out thermostat, the fan may not trigger that's why the fan won't workwhen under stressed conditions. A blown radiator blower fuse can cause thisissue too so I suggest that you check the radiator blower fuse and replace itwhen necessary. What causes the radiator blower fan fuse to blow? It's becauseof a failing radiator blower motor, If that's the case have the radiator blowerfan motor replaced. If the fluid in radiator doesn't circulate then it meansthat you have a blown head gasket or a faulty water pump. I suggest that you gofor the water pump replacement first specially if you think that it's near theend of it's service life. Usually, water pops out the radiator when engine isreved (a sign of faulty water pump and possible blown head gasket). Hope you find this information helpful enough and thank youfor using FixYa! Have a good one!

Jun 12, 2011 | 1997 Ford Escort

1 Answer

Care overheats, if i turn on the heater and high heat, cools back down; in the past replacing the thermostat resolved the problem


Hello and welcome to FixYa! If you have overheating problem, it can lead to multipleissues. You may be running on low coolant that's why the vehicle overheats. Ifthat's the case, please add coolant and make sure that it sits on the rightlevel, too much coolant can cause overheating too for coolant will overflow. The vehicle may have a faulty or worn out radiator blowermotor that's why it overheats. If that's the case then you will need a blowermotor replacement to resolve the issue. If the radiator is clogged with dirt and rusts this issueoccurs too. The coolant doesn't flow normally on the cooling system if it'sclogged. If that's the case, I strongly suggest that you have the radiatorflushed to drain out dirt and rusts. If you think that the radiator served youenough then it's better to have it replaced. Please do check the radiator hoses, If you have worn outhoses it can cause coolant leakage which can result to overheating. A tiny holeis good enough for the vehicle to overheat. A faulty thermostat sensor can cause the issue too. If youhave worn out thermostat, the fan may not trigger that's why the fan won't workwhen under stressed conditions. A blown radiator blower fuse can cause thisissue too so I suggest that you check the radiator blower fuse and replace itwhen necessary. What causes the radiator blower fan fuse to blow? It's becauseof a failing radiator blower motor, If that's the case have the radiator blowerfan motor replaced. If the fluid in radiator doesn't circulate then it meansthat you have a blown head gasket or a faulty water pump. I suggest that you gofor the water pump replacement first specially if you think that it's near theend of it's service life. Usually, water pops out the radiator when engine isreved (a sign of faulty water pump and possible blown head gasket). Hope you find this information helpful enough and thank youfor using FixYa! Have a good one!

Jun 06, 2011 | 1996 Jeep Grand Cherokee

1 Answer

Wondering why car still overheats after put in new waterpump and thermostat


Hello and welcome to FixYa! If you have overheating problem, it can lead to multipleissues. You may be running on low coolant that's why the vehicle overheats. Ifthat's the case, please add coolant and make sure that it sits on the rightlevel, too much coolant can cause overheating too for coolant will overflow. The vehicle may have a faulty or worn out radiator blowermotor that's why it overheats. If that's the case then you will need a blowermotor replacement to resolve the issue. If the radiator is clogged with dirt and rusts this issueoccurs too. The coolant doesn't flow normally on the cooling system if it'sclogged. If that's the case, I strongly suggest that you have the radiatorflushed to drain out dirt and rusts. If you think that the radiator served youenough then it's better to have it replaced. Please do check the radiator hoses, If you have worn outhoses it can cause coolant leakage which can result to overheating. A tiny holeis good enough for the vehicle to overheat. A faulty thermostat sensor can cause the issue too. If youhave worn out thermostat, the fan may not trigger that's why the fan won't workwhen under stressed conditions. A blown radiator blower fuse can cause thisissue too so I suggest that you check the radiator blower fuse and replace itwhen necessary. What causes the radiator blower fan fuse to blow? It's becauseof a failing radiator blower motor, If that's the case have the radiator blowerfan motor replaced. If the fluid in radiator doesn't circulate then it meansthat you have a blown head gasket or a faulty water pump. I suggest that you gofor the water pump replacement first specially if you think that it's near theend of it's service life. Usually, water pops out the radiator when engine isreved (a sign of faulty water pump and possible blown head gasket). Hope you find this information helpful enough and thank youfor using FixYa! Have a good one!

Jan 16, 2011 | 1996 Oldsmobile Cutlass Ciera

1 Answer

Need to know how to replace a water pump on 81 cj7


This is for an 82 Inline 6 Aldata doesnt go back that far, if you need further info Hit Me Back

  1. Disconnect battery ground cable.
  2. Drain cooling system.
  3. Disconnect radiator and heater hoses from water pump, Fig. 21.
  4. Remove drive belts.
  5. Remove fan shroud and fan.
  6. Remove water pump attaching bolts, then the water pump and gasket.
  7. Reverse procedure to install.

May 31, 2009 | 1984 Jeep CJ7

1 Answer

Overheating


Well, assuming that the water pump is turning the correct way, looks like you are going to have to pull the radiator out & take it to a guy who cleans radiator interiors. Seems to me that you may have some sediment built up and the water is not circulating thru the rad. This would explain why the top is warm & the bottom cool with no thermostat. Whilst the rad is out, flush the block with water. See what comes out. Don't use a "flush kit" just yet. In my experience, the flush kits that you buy are not good for this issue, have it done by a pro, but, after he cleans it, then get a flush kit & flush the block anyway. If there is sediment in the radiator (from sitting), there is def sediment in the block.

The timing would have to be WAY OFF to make it overheat.

Sep 17, 2008 | 1984 Jeep CJ7

3 Answers

2004 Jeep wrangler 4.0 - 6cyl overheating


I had the same overheating problem in my jeep ! My problem was finaly found out to be the clutch in my fan its a different kind of clutch system it work as this. When your jeep gets warmer the tighter your fan clutch gets .While cool your fan moves slowly. now to test your clutch just warm up your jeep and rev it up a bit if your fan dose not pick up speed then it is sliping.What will come out of this is that you fan will the seez and run full all the time. if you jeep dose not overheat wile moving then it is not your thermo stat period.

Sep 02, 2008 | 2004 Jeep Wrangler

Not finding what you are looking for?
Cars & Trucks Logo

261 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22258 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...