4 votes

unique alternator issue

My first thought is your ground wire to the trailer is not large enough causing a voltage drop to the rear battery. However after some research turns out your alternator is controlled by the PCM and ...
Move More Comments Link To Top's user avatar
4 votes

High beams work, low beams do not. What is wrong with headlight?

There are a few things that could be problems: Confirm that the bulbs are good. I've seen it happen more than once that one bulb burns out and you don't notice, then the second bulb burns out and ...
dlu's user avatar
  • 14.5k
4 votes

Impact of cigarette lighter ports on car battery

When you purchase a lighter plug extension that adds three extra plugs, you're not changing the voltage because the plugs are in parallel with each other so that each plug can deliver 12V to the ...
Paul Dufresne's user avatar
4 votes

2008 Jeep Wrangler - Suspension squeaks

I have three Wranglers, and there are plenty of places on them to squeak, and not all of them have grease nipples. The most common places that will cause a squeak on the Wrangler, in order of ...
Paul Dufresne's user avatar
4 votes
Accepted

90 Jeep YJ: Identify part on top of engine?

It's a Positive Crankcase Ventilation (PCV) valve. Not sure which engine you have or I would have given you a couple of part numbers. Well, guess I can give you both: 4-cyl FRAM FV200 Standard Motor ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes
Accepted

Blower Motor Location on my wrangler

Unlike most blower motors found under the passenger side dash, your blower motor is accessed through the engine compartment on the passenger side. There are three bolts holding it in place. Below is ...
MJH's user avatar
  • 878
3 votes
Accepted

Performance brakes on the front axle only. Bad idea?

It's not a great idea. Brakes are generally balanced to have 70% of the braking power in the front and 30% at the back, if you make your front ones very powerful you get unbalanced braking which can ...
GdD's user avatar
  • 16.9k
3 votes

2007 Jeep Wrangler HOT OIL! STRANDED! HELP!

Does your "hot oil light" look like this: Because that is the low oil pressure light. And it means your engine doesn't have enough oil to run. The engine will destroy itself if run without enough oil....
Nick's user avatar
  • 4,129
3 votes
Accepted

2003 Jeep Wrangler - Coolant Leak

Thought I would update the thread. Replaced the pump and the leak has stopped. When taking the pump off it looked like the source of the leak was the bottom seal of the water pump. Last time I ...
fortune's user avatar
  • 161
3 votes

Jeep Wrangler spark-plug issue

Sounds to me like one of the spark plug wires isn't fully seated. I would check both ends of each cable and make sure they're fully seated. The engine code it produced should give you some idea where ...
Paul Dufresne's user avatar
3 votes

Questions About the "Death Wobble"

It's difficult to determine the root cause of a death wobble from the behaviour alone, but there are some clues. They're just not fool proof. If you find your death wobble is related to speed, and ...
Paul Dufresne's user avatar
3 votes

High beams work, low beams do not. What is wrong with headlight?

Perform a continuity test on your combination switch. Get a multimeter and service manual for your vehicle and test the contacts with the switch in different positions.
tlhIngan's user avatar
  • 12.2k
3 votes
Accepted

What does this ground cable connect to?

It should connect to the hood/bonnet. I got this photo from here I guessed it was from the hood and did a google search "jeep wrangler hood earth strap" You can see the bolt hole in your ...
HandyHowie's user avatar
  • 25.2k
3 votes
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E-Brake/ Parking or Hand Brake not working (well barely)

Your Wrangler has drum brakes in the rear which are used for the parking brake, at least I'm not seeing anything else in the parts which are showing something else. Since you heard some squealing with ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes
Accepted

What Does HRT mean on Scanner Tool?

I was wondering whether this should have been HTR for an oxygen sensor heater. I then found this from here - It would fit that the O2 sensor and O2 heater both have red crosses against them.
HandyHowie's user avatar
  • 25.2k
3 votes

All lug nuts come off without any warning and studs backed off

I would go with your thought that you didn’t torque them properly. I would say that the bent one was the last one to hold onto the wheel while the others were getting “hammered” in by the rear face of ...
HandyHowie's user avatar
  • 25.2k
2 votes

High beams work, low beams do not. What is wrong with headlight?

2003 owner and non-mechanic. Had an issue where high beams worked but only the passenger side low beam would work. How to diagnose and fix? Take out both headlights and swap to see if you get ...
user42512's user avatar
2 votes

2003 Jeep Wrangler - Coolant Leak

I replaced the water pump on my car last Fall and the seal started leaking again almost immediately. I read that 90% of seal failures on new water pumps are due to impurities in the coolant. Gates ...
Carguy's user avatar
  • 1,957
2 votes
Accepted

Torquing pinion nut on pinion shaft—can it be done with tires on ground?

If you have enough clearance to fit under the Wrangler, there's no mechanical reason you cannot do this while the vehicle is on the ground. Torquing the pinion nut with it on the ground will not cause ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

unique alternator issue

I'm assuming the engine in your Jeep is a 4.0. The voltage regulator is a part of the PCM, this is a PWM system that operates up to 100Hz and can field the alternator at 100% by fully grounding the ...
Ben's user avatar
  • 10.7k
2 votes
Accepted

2012 Jeep Wrangler JKU turn signal, horn and wipers stopped working

I found at least one solution that seems to have worked. Unhook the battery, wait 10 minutes and then hook it back up. This forces a computer reset and magically everything started working again. When ...
Stimy's user avatar
  • 121
2 votes
Accepted

Changing lock mechanisms on doors of Jeep Wrangler

A quick check on Amazon shows a lockset for less than $15. If they were my doors, I would replace the cylinders. Show the buyer the paperwork for the new cylinders and give them the new keys. Then the ...
mikes's user avatar
  • 19.9k
2 votes

Should the 5th wheel be included in the tire rotation?

There are several patterns of rotation for vehicles. When a vehicle has a space saver spare then patterns of side to side, cross or front to rear are applicable. As you have a full size spare then ...
Solar Mike's user avatar
  • 34.6k
2 votes

Jeep Wrangler 2015: What is this part under the hood? And, now that I burned plastic on it, should I replace it?

It is an oxygen sensor (lambda sensor). Nothing to worry about.
HandyHowie's user avatar
  • 25.2k
2 votes

intermittent loss of brake pressure on a 2012 jeep wrangler

I had the exact same problem in my 2012 jku. Ultimately it was the ABS pump. There are videos out there showing how when the ABS valves malfunction fluid shunts can occur that give sudden loss of ...
Paul DiGiorgi's user avatar
2 votes
Accepted

Abnormal Fan Switch Voltages?!? '99 Wrangler SE/TJ fan issues

What you're seeing is normal for most non-electronically controlled fan motors. Those are a different story. How these work is to have the circuit from the +12V line through a switch that then ...
jwh20's user avatar
  • 12.1k
1 vote

intermittent loss of brake pressure on a 2012 jeep wrangler

If this happens after you've been braking quite a bit shortly before the incident, it could be boiling brake fluid. Brake fluid is hygroscopic and will absorb moisture from the air. When the moisture ...
Jupiter's user avatar
  • 3,222
1 vote

Jeep 4.0 inline 6 engine won't turn over by hand, need help

More than likely when the engine sat for so long, one or two of the cylinders (open to the elements via an open intake or exhaust valve) became rusted. When you turned it over, it forced the piston ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote
Accepted

Accessing defrost vents (removing dash?) on 2010 Wrangler Rubicon 2-door w/o power windows

I have lots of general experience in this arena, but not particular experience on that particular Jeep instrument panel. Lets address that finish panel around the radio. My guess is that screw is ...
zipzit's user avatar
  • 6,539
1 vote

What are the consequences of driving my car with low coolant for five minutes without reaching the limit on the temperature gauge?

It doesn't sound like it's likely you have any lasting damage as you didn't run out of coolant, it just got low and you caught it fairly early. It could be a straightforward coolant leak from a hose ...
GdD's user avatar
  • 16.9k

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