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L6-4.0L

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No check engine light, stalling while driving
Hello, It sounds like you may have a dirty or faulty idle air control valve. In some cases this may not always set the check engine light off when this is dirty. The idle air control valve is a small...
Question
Jeep wont go past 45mph
Hi There, What you are describing sounds like you may have a clogged catalytic converter. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When the catalytic converter is...
Question
Help! vechicle stalls out without any dash lights
Hello, thank you for writing in. When dealing with a stalling issue, the first thing you want to do is start with the simple stuff. Check the battery's terminals, ground connection, wiring the the fuse box, and wiring to the...
Question
Jeep won't start.
Hello, thank you for writing in. The vehicle sounds like it is getting fuel pressure while starting or holding it while the vehicle is off. This does not necessarily mean that the fuel pump is sustaining pressure after the vehicle...
Question
Engine is getting warm, heater is only blowing warm air when the vehicle is moving. 2003 Jeep Grand Cherokee
Hi there - this sounds like a possible thermostat (no allowing proper warm-up to operating temperature), or an inadequate water flow (water pump or clogged radiator) problem. The lack of heater function could have 5 causes: the engine is not...
Question
Why does my truck start then overheat on shut off after 10 minutes of driving
Overheating can be caused by a number of things such as low coolant levels, a faulty thermostat, a clogged radiator or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant...
Question
My Jeep is having EVAP Issues
Hello Melissa, thank you for writing in. We can absolutely help you replace the EVAP canister or other malfunctioning parts in the system. If there is a vacuum leak in the system, you will need to locate it. An EVAP...
Question
Bad squealing noise 2001 Jeep Cherokee
Hello - there are several possible sources for the squealing noise you are experiencing. These include the serpentine belt tensioner (may not be keeping the belt tight), or a failing alternator, water pump, or power steering pump (putting excess drag...
Question
My boy accidentally hooked battery cables up wrong on his truck, and now it's got white smoke that smell like gas coming out.
When hooking up the battery cables backwards, the ground became the hot and the hot became the ground. Most likely the computer (ECM) could have failed and the fuel pump may have burned up. I recommend checking all of the...
Question
Just changed my water pump in my 2000 Jeep Wrangler. Still overheating. What is the problem???
The first thing to check is to see if the thermostat is not stuck closed. If it is then replace thermostat and purge all the air out of the cooling system. Check the cooling fan clutch to make sure it...
Question
New starter and battery, damn thing still won't turn over.
Hi there. It sounds like there is either a short to power or feedback occurring in an electrical circuit. Locating the faulty circuit can be time consuming, but it can be accomplished. Look for chaffed/melted wiring and corroded connectors and...
Question
Problem starting
What you are describing sounds like a faulty starter solenoid. A faulty starter solenoid will generally produce a clicking sound when turning the key. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity...
Question
Fuel pump not working, changed it, also new battery and alternator , still no fuel pumping
Hi there. Are you getting battery voltage at the fuel pump? Double check the fuses with a digital volt/ohm meter and measure voltage on both sides of fuse to verify continuity. Your fuel pump circuit should have a relay or...
Question
Soft brakes 2000 Jeep Wrangler
Hi there - from your symptoms, there is still air in the brake system. Newer cars, with ABS systems integrated, are more difficult to purge air from without pressure bleeders and actually exercising the ABS pump. I recommend a brake...
Question
How do I fix O2 sensor heater cylinders 1-6 circuit malfunction?
The oxygen sensor heater is integral to the sensor assembly itself. It is not separately serviceable. If the heater tests bad, the entire sensor is replaced as an assembly. In your case, P1193 refers to an oxygen sensor which is...
Question
Their is a hole in the Heater Box
If you are referring to the "heater core", which is the metal assembly under the dash that looks like a mini radiator and through which heated coolant flows, for your make and model that part costs anywhere from $75 to...
Question
How much will it cost to repair a gas leak? 1998 Jeep Cherokee
Hello. To give you an accurate estimate on your gas leak the vehicle will first need diagnosis to determine where the leak is coming from. They are wide variety of things that can leak gas such as a fuel pressure...
Question
problem with starter maybe?
Hello. Will be happy to assist you. It does sound like you have an issue with the bendix gear of your starter. Possibly a starter on as last leg and or on its way out. If the starter is bad...
Question
Car shaking and check engine light blinking
Hi Mark, There are a few things that can cause the shaking and engine light to come on. Generally, this happens when there is a misfire due to a spark problem or an over or under fueling problem. Things like...

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