Top 10 2004 Jeep Wrangler Questions & Answers

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Question

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heater blows cold air

2004 Jeep Wrangler, 50,000 miles. Recently had satellite radio antennae installed. Turned heater on this morning and blows cold air.

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the electric motor that open the heat door looses electrical connection there by the door stays on cold / it is located under the a/c heater assembly / which requires removing the whole dash and heater assy// also bleed all air out of coolant system
there are three doors / 1/ a/c heat 2/ mode /defors 3/ recurculation dodgeboy6069@yahoo.com

Posted on Sep 11, 2009

Question

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2004 Jeep wrangler 4.0 - 6cyl overheating

My 2004 jeep wrangler was overheating, so I replace the thermostat...thought there might have been a leak in my radiator but it turned out to be just a faulty radiator cap...however with the new thermostat the engine still overheats...when I remove the thermostat completely the engine runs perfectly fine at normal temperature...could have been just a faulty thermostat...should I try installing a new thermostat once again? Any insight would be helpful

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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.

Posted on Oct 14, 2008

Question

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death wobble

at 40-45 mph the steering will shake violantly, I have the tires balanced and a new stabilizer put on and the front end allinged and the track bar seems tight. I have a Rubicon with 265-75-16 tirs and there is a winch on front.I bought this used about 3 weeks ago.

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My Death Wobble started immediately after I installed a set of Coil Spring Spacers (to lift 1.75 inches) on my stock 2005 Jeep Wrangler X. Turned out, the DW was because while changing the height, I also lowered the CASTER angle in the front end. So, to fix it, I could have purchased a set of eccentric bolts for $50+. Instead I went out and purchased a piece of 1.5 inch flat bar for $10 from OSH. I cut out 4 1.5 inch squares. Then i drilled 7/16 inch holes centerline, but close to one side (in exactly the same place) on all for squares. I then removed the lower control arm bolts, nuts and washers. I installed these square offset washers I made so the front axle would be pushed forward (to increase the Caster angle). The toe setting changed a bit, so I reset them to about 1/8 inch toe in. After driving my Jeep, I noticed there is no more DW. The steering wheel was off center, but after 3 attempts, I have that perfectly centered. I have every intension of having the alignment checked, but not till after I find the new tires I want. If anyone is interested, I can draw out and photograph the cure and send it to you. My e-mail is bb62471(at)yahoo(dot)com.

Posted on Feb 13, 2009

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Where is the MAF sensor on a Jeep Wrangler 04

Where is the MAF sensor on a Jeep Wrangler 04

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Locate the air filter box. From the box, there should be a large hose going toward the engine (air intake). There will be a few fasteners around the hose holding a smallish black box off to the side. The MAF sensor is inside that large hose, near that black box. It should be in the center of a plastic circular harness within the hose once you disassemble it. Be careful with the sensor, they are extremely sensitive to solvents. Use MAF sensor cleaner ONLY if you want to clean it (recommended for better MPG around every 20-50K miles). Hope that helps!

Posted on May 18, 2012

Question

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Code P1687

Hi:

I want to know the meaning of the code P1687 for a Jeep Wrangle 2004, how it affect and how to fix it.

Thanks;

Annie

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Answer

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p1687 is for no cluster bus message...this could mean a bad cluster....wiring to the cluster ...or a bad pcm...u should take it to a reputable repair facility for further diagnostics

Posted on Oct 21, 2008

Question

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how to wire a jeep wrangler for towing behind a

how to wire a jeep wrangler for towing behind a motorhome using a 7 way rv connector . the jeep has three wires, brown, green and yellow. green and yellow are turn signals, I am having problems with the brake and tail lights.

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I tow my 2005 Jeep Wrangler behind my motor home. I installed a Jeep trailer towing wiring kit to the rear lights. the bought a long trailer wiring kit and ran it from the front of the Jeep to the Jeep tralier wire plug. Pluged it in and pluged the other end into the motor home trailer light recptacle. I used only four wires plus ground. There is probably a way you could tap into the wiring harnes under the hood but not having a wiring diagram this is the best I could come up with and all lights do work. You can buy a test plug with led lights that plugs in both male and female, real handy for checking connections.

Posted on Jan 25, 2010

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DTC's P1686 P1687

Hi have 2001 grand Cherokee I was driving and I lost all the gauges but truck ran fine. I then disconnected the battery to reset the controllers, now the truck starts and stalls in 2 seconds. The first code comes up is P1687 then the P1686 code comes up

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Answer

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Code 1687 means the computer lost power, probably when you disconnected the battery. Code 1686 means the computer is not talking to the instrument panel.
It could be the cluster or a wiring problem. Since you disconnected the battery, the computer may have to re-learn its parameters to know what the base idle should be. You may have to try to drive it a few miles.

Posted on Jul 03, 2013

Question

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check engine light code PO456

my check engine light went on in my 2004 jeep wrangler, I looked up the code, PO456, it said very small leak has been detected in the evaporative system. I changed the gas cap and the light still came on. This has been a problem for a while, it goes away for a while and then it comes back on a few days or even weeks later.............help

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most likely the pressure sensor in the fuel tank for the evap system is defective.

Posted on Feb 26, 2009

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how to check fuel pressure on a 2004 jeep wrangler 4.0. where is the the fuel pressure check valve? they are normaly on the fuel rail, but this jeep does not.

how to check fuel pressure on a 2004 jeep wrangler 4.0. where is the the fuel pressure check valve? they are normaly on the fuel rail, but this jeep does not.

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Answer

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Nope it does not. You need to pull the fuel line from the fuel rail and use a special hose adapter that is installed in between. A gauge is then attached to the adapter and fuel pressure can be read.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Posted on Aug 08, 2012

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code scan: P0301 Cylinder 1 misfire detected

2004 Jeep Wrangler 2.4 liter. about 36,000 miles.the engin malfunction light came on. went to Checker auto an used their code machine. Code P0301, what does this mean and how can I fix it? I had the spark plugs changed recently, could some bit of dirt fallen in and clogged it?

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Code P0301 is a generic OBD Code for Misfire. It also indicates you have a misfire in the #1 Cylinder. I would start by checking the plug wire to make sure its clean and on all the way (at the coil as well). Then if that doesnt help I would pull the plug out and check the condition of the spark plug. hopefully this will give you some direction. Thanks for Using FixYa!

Sincerely,

JC

Posted on Dec 03, 2008

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