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L6-4.0L

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My brake lights work when my lights are off but do not work when I turn my lights on. My tail lights work when lights are on.
It sounds like you may have a fault at the brake light switch circuit which controls a number of things in the vehicle. This switch indicates when the brake pedal is pushed and triggers the brake lights to come on....
Question
Loose/Wobbly steering wheel
Claimed by Andrew Quinn
Question
Jeep stalls when driving on bumpy roads
Hi Hunter. Thanks for the question today. A random stalling issue like you've described can be caused by loose electrical connections - but knowing which ones for certain would require an onsite inspection. It's also possible that fuel system obstructions,...
Question
Radiator blown vehicle shuts off immediatly
Your vehicle has a coolant level sensor but that sensor does not function as an "interrupt" device. All it does is report if the coolant level is too low. The cause of the shut-down could vary from sensor damage (sometimes...
Question
Engine chirp chirp chrip
Most likely the noise is coming from the drive belt. You can try to spray some wd40 on the belt and see if the noise goes away since the belt may be dried out. If the noise does not go...
Question
every time I accelerate my oil gauge shoots up by 40 to 60 on the gauge. It idles at 40.
Hi there. As an engine accelerates, oil pressure is increased typically. However, if it raises by double, that's a bit on the high side. This could be due to excessive sludge in the engine, faulty oil pressure gauge in your...
Question
96 jeep grand cherokee fuel injectors
Buying the wrong parts is a frustration every mechanic endures. The parts replacement companies do not always have the correct information and unless your parts man really knows your car, he can only go by the information he has. That...
Question
1997 jeep cherokee 4.0 was cranking no start then had difficulty then stopped cranking.
If it is not cranking now, the battery could be dead and/or the starter motor has overheated. Starters draw a lot of current and so run time has to be kept to a minimum. As far as the earlier no...
Question
The rear end roars the faster i go in my 1996 Jeep Cherokee.
Hello, From your description this does sound like an issue with the rear differential bearings. Most of the time it is the pinion bearing, but the differential would need to be taken apart to verify this. I would take the...
Question
I have a 1999 jeep Cherokee XJ that idles fine but when I accelerate it spits and shutters. Any ideas?
Check engine compression and intake vacuum to first rule out possible mechanical problems such as stuck or leaking valves. Among the causes of poor acceleration are clogged fuel injectors and/or inadequate fuel pressure/volume. When an injector is clogged it can...
Question
Jeep dies in while idling. Still has power, can be put off by reving in neutral. Already cleaned IAC valve.
You should have the computer checked for stored codes and see if there is codes to the transmission overdrive or shift solenoid. If not then you will need to check engine for vacuum leaks and replace idle control valve if...
Question
After changing thermostat, thermostat housing and gasket. Why is my check engine light come in?
It sounds like the computer is still seeing an overheating condition present based upon the reading from the coolant temperature sensor. This means either the vehicle is in fact still overheating due to some other problem such as a faulty...
Question
what engines fit my jeep grand cherokee laredo 2002
The 4.0L engine block and cylinder head (that is, the long block) used in several Jeep products from model years 2000 through 2004 may work in your vehicle. Your VIN number would be required to check. If you are looking...
Question
I drive a 96 Jeep cherokee 4L inline 6. Im having overheating problems, here's what I've replaced: New radiator, Thermostat, Rad C
Hi Kade. When your car overheats, it can be due to multiple sources, ranging from air bubbles or an obstruction of debris trapped in the heater core or the cooling lines that is restricting the flow of coolant, to a...
Question
Lower control arm snapped at axel can i drive if i go slow
Hi Tiffany. I would strongly recommend against driving with any damage to the front suspension. Even driving slowly can create a rather serious safety issue. It's always best in these cases to defer to caution and have the vehicle towed....
Question
My 95 Jeep Grand Cherokee shakes when you just sit. Drives great but done know what's wrong any help would be appreciated
Vibration at idle is due to either faulty motor mounts or an engine management issue such as faults in the ignition or fuel system, although on high mileage engines uneven cylinder compression can be a cause. You note loss of...
Question
Have a 2004 jeep wangler it will not shift
Thank you for writing in. If the vehicle is shifting and working in reverse but not drive, you have an issue with the transmission or the linkage. You will want see if the gear selector is changing the positions on...
Question
Why won't my parking brake hold after rear rotors and pads were replaced?
The parking brake system is an entirely separate system from the main brakes in your vehicle. The parking brake is operated by a cable that runs to a brake drum system that is not controlled or impacted by your regular...
Question
leaking lower radiator hose at shut off
The leak will not be resolved by a coolant flush. To resolve the leak, please schedule service using YourMechanic's coolant leak diagnostic and repair service page. During the same visit, the mechanic can deal with the reserve tank fault that...
Question
Car won't start up after changing injectors
Hi there. Thanks for contacting us tonight about your Jeep Grand Cherokee's starting problems. In most cases, sticking with the OEM replacement parts will produce the best results. This is especially true in regards to fuel pumps and fuel injectors....

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