Question about 1997 Jeep Grand Cherokee

1 Answer

Car overheat when using a/c

1997 jeep grandcheroke, car overheat when using a/c.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Jeep Master
  • 6,982 Answers

First, if you have an electric fan in addition to the mechanical one, make sure it comes on when the a/c is on. Next, make sure that you have exactly 50/50 antifreeze mix (check with a cheap tester). Also check that you have the proper pound rating cap on the system. An incorrect cap will often work when not using the a/c but with the additional load, the system runs hotter and that's when the cap becomes very important. If correct, make sure that the seal on the cap is good.
Jeep radiators are marginal in size, nearly too small. If you have any leaves or bugs packed in front of the a/c condenser or between the radiator and condenser it will restrict air flow and make heat transfer inefficient. Make sure air flow is not blocked. Any internal calcification of passageways inside the radiator can do essentially the same thing (requires a good flush, sometimes replacement).
One or more of the above should help you.
good luck!!!

Posted on Jul 17, 2010

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

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

Heater light flashing on 1997 vitara jeep not start


what country, which engine>? G16?
where is this light. try to be exact, (on the HVAC controls)
or in the dash speedo cluster?
and we'd need to know if it has an icon, ?
better post , a real photo of lamp.
did you overheat the engine (coolant gauge needle , on H)

as the dash lamps vary by every country a vitara is sold.
the operators guide (glovebox) is the way to know what a lamp means. (warnings) and is unique to your country! fact !

i see UK cars (we are USA here) have CAT overheat icons.
(we dont have that here)
and means just that. (engine too rich and misfiring or rich and exhaust cracks, sucking air ) causing CAT to OVERHEAT.

no start. lets work that now.
ok, key on, CEL glows. (check engine light ) must glow
does it.
does engine crank? fast?
if yes, is the IMMOblizer lamp (dash) happy? (oper, guide again)
if cel on , Immo happy
then it cranks fast ,do you have spark to all cylinders of unstated size engine?

our cars the USA OBD2 scan tools all work in 1997
but in say UK not. so ... that to changes diagnosis BIG TIME>.

Feb 17, 2015 | 1997 Suzuki Vitara

1 Answer

I have 2005 Jeep grandCheroke V8 the dash light say Transmission over heating


i probably is.
use a pyro IR gun and check it real temperature

http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

first make sure engine is not overheated
or the ENgine Rad, at bottom is not full of rust mud.,making tranny cooler useless
were you pulling a huge load?

Aug 20, 2013 | 2005 Jeep Grand Cherokee

1 Answer

Do i need a coolant sensor to drive my jeep or will i cause iy to over heat?


The sensor wont cause it to overheat, it will cause the computer to not know the correct coolant temperature. which can lead to bad fuel mileage and drivability issues.

Sep 08, 2010 | 1997 Jeep Grand Cherokee

2 Answers

I have a 1997 Jeep Grand Cherokee Laredo that the top hose that leads from the radiator to the thermostat blew the other day. I replaced the hose with no problems but the gauge in the jeep keeps indicating...


The sensor would not likely have shorted, but the sensing material may have changed due to overheating. The thermostat may also be in trouble. Replace both, then take the car to Autozone or similar business for a free computer scan, which can remove any error codes. Then drive the car to see if it resets further codes. Make sure the cooling system is topped up in both the radiator and the overflow tank. Check your other hoses for condition and replace if necessary. If the entire engine overheated, be on the lookout for antifreeze leaks around the heads and for strange misfire codes. It may have warped the heads from excess heat. Hope this helps!

Jun 06, 2010 | 1997 Jeep Grand Cherokee

1 Answer

Grandcheroke wont go in to overdrive on a very rare ocassion it will also its having problems determing which gear to select say if i slow right dow to turn it will go into 2nd then 1st back into 2nd


sounds like the actuator valve is bad. these things get dirt in the diaphrm and cant open and close properly. if you can depress the diaphram by hand..then its good,and the vacuum line leading to it is cracked and needs replaced.

Apr 28, 2010 | 2001 Jeep Grand Cherokee

1 Answer

My 97 jeep sometimes doesnt catch gears when i accelerate. It just revs the engine and sends the rpms up. any idea why?


That could be caused by either a pressure loss inside the transmission or a bad shift control module. Each time that happens it begins to overheat the internal clutches causing more damage so I recommend you have it checked out immediately by a reputable transmission shop.
(nothing you can do from the outside)

Apr 04, 2010 | 1997 Jeep Grand Cherokee

1 Answer

Temp guage is running up to 260 is this a thermastat problem?


Most Jeep overheats I've seen are either caused by poor radiator flow or the electric fan not coming on. You could have a malfunctioning thermostat and they are inexpensive so replacing it isn't a big deal, They become unreliable after an overheat also...another reason to replace it.
Obviously, you need to check for external leaks, oil in the coolant/ coolant in the oil or white smoke from the tail pipe (all signs of larger problems.)
Most shops use a heat sensing gun to check for cold spots on the radiator.
One clue to poor flow is if it takes a long time to fill it. To check the fan, watch it and see if it comes on when it should.
good luck

Mar 26, 2010 | 1997 Jeep Grand Cherokee

1 Answer

Jeep Grand Cherokee straight 6 1997. My information center keeps telling me my coolant sensor is bad. I replaced the coolant sensor with two different new sensors and it still keeps beeping at me. Truck...


You'll have to look around on some of the jeep forums for exact details on how to remove the VIC, but the problem is the #8 wire in a ribbon connector that holds the two VIC circuit boards together. One is the "brain", and the other is the display, and interface.They go together in the VIC "box" like a sandwhich, with the ribbon cable in between.

The factory that made the VICs use a wave soldering method, and the #8 pin (which is the coolant sensor ground pin- IIRC it's pink- will have a cold solder joint.

It takes about 15 minutes to get the VIC out of the car, and if you can solder, another 5 to fix the problem. I'd advise re-soldering all the connections, while you're in there.

OR, buy a used VIC off of someone on E-Bay. The problem with that is they might have the same affliction.

Sep 22, 2009 | 1997 Jeep Grand Cherokee

Not finding what you are looking for?
1997 Jeep Grand Cherokee Logo

47 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

Marvin
Marvin

Level 3 Expert

83096 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22382 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides

Loading...