Question about 2004 Jeep Grand Cherokee

1 Answer

I have a 99 jeep Cherokee and it gets very hot often. i have 3 elect fans in it (2 that **** in, 1 that blows through). i do not run a thermostat for max water flow, i added a new radiator (The Heat Buster), i also removed skid plate under front to allow more air flow. i placed 2 intake air vents on top of hood mounted backwards to allow heat to be pulled out on engine compartment (heat rises). yet it stills runs hot. this problem has been on going and getting worse. it started only after i replaced the Crank Shaft Position Censor (old one went bad). the jeep runs just fine (no rough idle, no shaking, no power loss). only thing else i can say it miles per gallon has changed. it eats a bit more gas then it used too. I am going to change the Crank Position Censor just to be on the safe side. would that be the reason for the heat issue?????

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Jeep Master
  • 8,195 Answers

I think you may be on the right track. If the timing is too far advanced, the engine can overheat. The computer uses the crank sensor input to time the engine. Let us know if it still over heats with the new crank sensor in.

Posted on Sep 12, 2010

1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Air,heat does not blow out vents 99 jeep Cherokee.

this is real simple physics (simple tests find this) in order.
1: first engine must get hot,180f or more. (bad thermostat it cant)
2: that same water (coolant) must FLOW in the heater core.
the SM shows, in the HVAC chapter, checking the 2 core hoses
as they pass firewall to core by hand (skills) or IR gun
to see that they are near 150f or more,(water inside is hotter,dig)
if both are hot, flow may be good. bet yes.
leaving what. just one cause, the heat damper is stuck closed.

did you want to test or guess?
you never said. my guess is you want only guessing here.
in web bunny land.
so here i go., Mr. Carnac .

i guess, damper stuck, and then reading the SM
find out why.


Mar 16, 2017 | 1999 Jeep Cherokee

1 Answer

2004 jeep grand cherokee water not circulating in radiator?

lots of thing, this happen by random? or it leaked out or doing service.
1: thermostat bad or installed backward or jiggle pin not UP hill.
2: air in the block, never burped during service.
3: pump impeller fell of, or rotted off.
4: fan belt missing or loose.
thats about it.

Dec 29, 2013 | Jeep Grand Cherokee Cars & Trucks

1 Answer

2000 Jeep GC, stalled in traffic, started later in day when cooler, very hot day, AC was off and not overheating, no problems before.

Could be a several things, start with the easiest first,

1. Thermostat (DIY for under $10.00)
2. Radiator Fan relay (DIY for under $50.00)
3. Water Pump (DIY for under $70.00)
4. Bad fan motor

Does your radiator fan run when AC is on or when engine is above 200F?

Jul 18, 2010 | 2000 Jeep Grand Cherokee

1 Answer

My 2004 Jeep Cheokee loredo is running hot. Could

Could be several things,

1. thermostat
2. water pump
3. fan motor is bad (is the fan running when at temp?)
4. fan motor relay

Is it running hot all the time or just when setting idle?

May 16, 2010 | 2004 Jeep Grand Cherokee

1 Answer

2001 jeep grand cherokee overheating while sitting still, goes back to normal while driving. No problems before, just started.

check coolant level check fan ,fan clutch(if elect fan sensor and proper function) ,belt for correct tension water pump -thermostat proper function,clogging radiator ,debris covering radiator

Oct 28, 2009 | 2000 Jeep Grand Cherokee

1 Answer

I just bought a 99 jeep grand cherokee. The air

see if the air duct piping is still connected to the blower housing or the fan blade might have come loose from the motor and the shaft is just spinning inside the fan blade

Aug 11, 2009 | 1999 Jeep Grand Cherokee

3 Answers

Engine block does not heat up

Check the radiator fan relay. If it fails and leaves your fan running all the time, then you may never get hot.

Mine failed in my '03 Jeep Cherokee, but it failed open. Didn't make for a fun drive home. Was located behind the right headlight, and in order to access, had to drill a hole in the splash shield behind the headlight. Then plugged back up with a hole plug from the hardware store.

Oh, and the heater never really get's hot. I don't know what temp it get's to, but hot, like in my '01 Tahoe, it's not.

Feb 03, 2009 | 1996 Jeep Grand Cherokee

Not finding what you are looking for?
2004 Jeep Grand Cherokee Logo

185 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 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