Question about 1996 Jeep Cherokee Sport

3 Answers

A 30amp fuse keeps blowing. the engine turns over but will not start but the electric cooling fan keeps running with the ignition on and engine cold My vehicle is a 1996 4.0lt cherokee jeep sports petrol

Posted by on

  • 2 more comments 
  • David Haime Oct 06, 2009

    My vehicle had it's MOT last Thursday having replaced 3 tyres and was running perfectly up to 9pm Friday evening. I had to deliver some bits to the other side of the city and I started the engine to come back home which only lasted 1sec. and that was it. Everything works except the engine which just turns over whit no spark. It was then that I noticed that the electric cooling fan started when the iignition was which on and that did not happen before. The 30amp fuse that had blown looking at the fuse box from the front was the second one towards me on the left side of the box. The first one working from the bulkhead towards the front is a 60amp. I hope you can make sense of this as at present the car is in a lockup 1/4 mile away.

  • David Haime Oct 06, 2009

    Hello I called the RAC out and I gather he tried the get a spark from one of the plug leads. Being very late at night and pick black he said I had no spark and called a recovery to get me home. I foregot to say that I did put in another fuse this morning and switched the igintion on ( cooling fan was off) but as soon as I turned the key to start the new fuse blow and the cooling fan started. I will in the morning have a look inside the fuse box lid and come back to you with any details.

  • David Haime Oct 08, 2009

    Hello Sorry took so long in getting back to you as we eventually found the fault and have been renewing wiring. We checked all the wiring circuits from the diagram you sent me and it all checked out ok but the fuse still blow.So working in the dark as they say I started trying to work out what was operated when the ignition was switch on. The Ignition system was dead at a rough diagram I got from the local Jeep dealer I noticed that there was a automatic shutdown relay. If this relay shut down the ignition then it may well shut down the fuel pump so that is where I started. I started checking the wiring and conections from the fuel tank and eventally found the fault under the rear seat on the passengers side. The wiring passes though metal panel and then under the carpet to the front. Where it pasted through the panel it must have been rubbing for a long time and it was the main feed to the fuel pump that had shorted out. I have replaced all the damaged wiring and fitted rubber seals where this harness passes through this panel on the nearside and the offside. Fitted a new fuse and so far fingers crossed it has not blown and the vehicle is mobile again.

    I would like to thank you for all the help you gave me one last request if I may ask. Could you get one or suggest where I could get a full wiring diagram showing what the fuse's feed as the workshop manuals only show the lighting circuits.



    Dave

  • Terry Strange Jun 06, 2012

    Mine Cherokee was doing the same thing, I found that the wire that comes out of the rail on top of the motor (injector wires) and goes down behind the power steering pump to the OXYGEN SENSOR had contacted the exhaust at #1 cylinder, melting the insulation and gounding out one of the wires. Copper wire was fine, just *****. This 30 amp fuse would blow when I'd hit a bump, Jeep would die. Taped wires up and installed new black heat shielding. Tie wrapped wire away from exhaust. Haven't had any more trouble.

×

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,922 Answers

You have an engine fan sensor faulty on the fan circuit(shorted sensor) or a back-fed ground re feeding it , the 30 amp fuse is for what circuit??? the no start could be an ecm fuse of 5 amps, then it could be the coil packs in the ignition..........please tell me what the 30 amp fuse controls, then maybe we can continue on with your issue

Posted on Oct 09, 2009

  • 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
  • 2,984 Answers

Let me know if you can open this link. It is the diagram that you should check out for a short in a wire that is acusing your problem.

http://www.chiltonlibrary.com/content/images/WD/Chrysler/235/WD_Chrysler_235877.pdf

Posted on Oct 07, 2009

  • Greg Bernett
    Greg Bernett Oct 07, 2009

    Looking up another diagram....thank you for the added info! This helps a lot!!!

×

  • Level 1:

    An expert who has achieved level 1.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Contributor
  • 1,326 Answers

Which 30amp fuse? Check your fuse panel cover for info on which fuse or your manual in the fuse section.... Start there as it could be 100 different things why this is happening so we need to start with the first obvious sign (the fuse blowing) and it will lead us to something. When did it start and has anything happened before this started, accident, damage, replaced radio anyting other then driving the car?

Posted on Oct 06, 2009

  • James Brooks
    James Brooks Oct 06, 2009

    Yeah, unfortunately I need more info on what exactly the fuse is.. When you get a chance take a look the panel or manual to see exactly what that fuse is. The cooling fan can come on when the motor is not running (it is thermally controlled) so that doesnt say much. Also did you confirm no spark when starting, if so how did you verify no spark (test coil pack, igniton module or pulling a spark plug while starting)?? I would not say its no spark without physically testing for a no spark condition..

  • James Brooks
    James Brooks Oct 09, 2009

    The only place to get that info would be a dealer service manual. A Chiltons/Haynes would not be that detailed but a dealer Emissions/electrical manual would show wiring and color codes as well..

×

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

1998 Saturn sl1 keeps blowing 30amp cooling fan fuses. it runs for maybe 20 seconds then fuse blows


The cooling fan motor is likely drawing to much current because it is worn out.

May 18, 2016 | Saturn Cars & Trucks

2 Answers

Why does my fan keep running in my 2003 Volvo S 60 after the car is off?


It can be faulty fan relay.The relay is not turning the system off.Or its wire short issue.Even with ignition off ,the fan relay is getting power so its not letting the fan to turn off.Bypass the fan control relay and see if still the fan works with ignition off or not.

For more troubleshooting check the link below:------

Cooling Fan Stays ON with Ignition Off?

http://whatisbyme.blogspot.in/2012/07/cooling-fan-stays-on-with-ignition-off.html
--------------

Cooling fan relays location ?

http://technoanswers.blogspot.in/2012/02/cooling-fan-relays-location-on-1998.html
------------

DIC says "COOLING FAN FAULT"?

http://schematicsdiagram.blogspot.com/2011/12/dic-says-cooling-fan-fault.html
----------

Heater fan and headlights will not turn off with ignition off?


http://technoanswers.blogspot.com/2012/01/heater-fan-and-headlights-will-not-turn.html


-----------

Fuel pump relay and cooling fan relay troubleshooting ?

http://repairhelpcenter.blogspot.com/2011/10/fuel-pump-relay-and-cooling-fan-relay.html

-------------

Where Is Radiator Fan relay and Fuse Located?

http://schematicsdiagram.blogspot.com/2011/12/where-is-radiator-fan-relay-and-fuse.html

------------
These will help.
Thanks.

Nov 28, 2012 | Volvo S60 Cars & Trucks

1 Answer

Ck engine light problem on 2001 Impala


Well the code is for the circuit - the computer commands the relay to turn the fan on and it doesn't happen.
The computer provides the ground for the relay.
If you have replaced the relay and the fan and the fuse still blows, I would look for a problem in the harness between the fuse box and the fan, including the ground circuit for the fan.
The fuse for the cooling fan is usually a 30amp marked "cooling fan" in the fuse box in the engine compartment.
Do you know what the 25amp fuse that is blowing is for ?

Jul 30, 2012 | Chevrolet Cars & Trucks

2 Answers

2005 impala heater fan runs constantly


read this post on what's causing blower motor to run all the time.

http://ricksfreeautorepairadvice.com/blower-motor-wont-shut-off/
Blower motor wont shut off Ricks Free Auto Repair Advice

Sep 14, 2017 | 2005 Chevrolet Impala

2 Answers

I have a 2004 Pontiac Sunfire. When the car is in idle the air blows out hot and the Temperature gage rises and the car over heats. When the car is moving the air blows out ice cold and the temperature...


Sounds like your cooling fans on the radiator are not working. The fans are activated by a thermol switch on the engine or radiator reading the coolant temperature and an A/C switch. When the coolant is too hot the fans should activate cooling the system down. And, when the A/C is on the fans should also activate in order to cool the condensate so the A/C would work.

When you are driving, the movement of the vehicle throught he air is providing enough air flow to keep things cool and functional.

I would check the radiator fan fuse or fuses first. If those are OK I would try to run the fans with 12 volts and a ground that I supply just to see if the fan motor(s) actually run when powered. If the fan don't run when powered then the fans are bad and will need to be replaced. If the fans do run when you power them manually, then something is not allowing the power to activate, like a relay, control unit, or wiring.

It will take a little diagnostics, but it is not too difficult to chase it down.

May 03, 2011 | Pontiac Sunfire Cars & Trucks

1 Answer

A/c blows hot air when the car is not moving but it will blow cold air when the car is moving.


Check to see if your electric cooling fan is working when the vehicle is in park with the engine and a/c running. If the fan isn't running then the a/c won't be able to blow cool air as it can't get rid of the heat through the condensor which is located ahead of the radiator. When you are driving over about 35 mph there is enough air being forced through the condensor and radiator to get rid of the heat and the a/c will start cooling properly again. If the fan isn't running and you sit with the car idling long enough [such as in heavy traffic] then the engine may overheat as it also has no way of cooling if the fan isn't working. Usually this fan is powerd by a 30 amp Maxi fuse but each model is a bit different. Your owners manual should have an illistration of the fuses and what they power. Good luck, hope this helps a bit!

Aug 11, 2010 | 2008 Chrysler Pt Cruiser

1 Answer

No start, blown ignition fuse 30 amp.


If it is the AM2 (30A) fuse that is blowing, check the ignition condenser, capacitor, within the ignition assembly. I just removed it and assembled the ignition back together. I am in the process of ordering a new one from Rock Auto for a total of $2.57. It seems to be a common issue. The condenser is actually a capacitor and the issue is that they internally short.

Jun 17, 2009 | 1993 Toyota Corolla

2 Answers

93 corolla 1.8 No start Blown ignition fuse


I had a prolem like this one time a while back. what i did was got the wiring diagram and checked everything that was running through that 30 amp fuse. on the one i was working on it ended up being an injector wire pinched under the valve cover and it didnt short out till the car was driven til it warmed up and expanded after the valve cover gasket was changed. hope this helps!

Jun 15, 2009 | 2005 Toyota Corolla

1 Answer

Blowing 30amp ignition fuse.


first check the wires connected to the battery for missed alignment. then change the fuse to 30 above amp.

May 28, 2009 | 1995 Nissan 200SX

1 Answer

Engine fan keeps running


It's possible that the fan control relay is intermittently sticking causing the fans to run continuously. This can overheat and subsequently blow the fuse. Try replacing the relay and see if anything changes.

Hope this helps.

Jul 10, 2008 | 1999 Pontiac Grand Am GT

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

Related Topics:

265 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

75744 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8123 Answers

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

Answer questions

Manuals & User Guides

Loading...