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Chuck Coats

Austin, TX

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Question Answered: 

A/C systems are very complex and requires the proper refrigerant. I often see A/C systems overcharged, undercharged or even systems that have air and moisture in them. If your system has air in it then it will have to be vacuumed out for about 30 minutes to remove the air. Air is a non condensable gas and moisture in the system can form ice crystals and become a restriction for the refrigerant to flow properly. Once the system is filled with 100 % refrigerant and you have a low side and a high side reading only then can someone diagnosis it properly.. Until these three things are done then one can only take a guess what the problem is. Best of luck Chuck


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Your engine will require three basic things in order to start up and run. 1. Fuel 2. Spark 3. Compression. You may have fuel, but not enough pressure or flow. You may have spark but it may not be enough or could be firing at the wrong time. Check to see if the the spark plugs are firing. If they are then I would check to see if the injectors are firing and if they are then check for fuel pressure. If you have plenty of fuel and it is being delivered and your spark is good then you may not have any compression. Best of luck Chuck


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The first thing I would check is to see if the throttle body is coked up.. If so then a good cleaning may be all it needs. The EGR valve is commanded open usually at speeds above 50 miles per hour.. This exhaust gas is recirculated back through the engine to lower combustion temperatures and reduce emissions. The problem with the EGR valve doing this is that the soot gets into the intake and around the throttle body, thus restricting air from entering the engine at low speeds.. Off of idle you will never have a problem but at idle or in parking lots when cutting the wheel sharp, then this puts an extra load on the engine.. As does when the A/C is turned on... the engine may not be getting enough air to keep it running if the throttle body is coked up.. Clean it real good and see if that helps. Best of luck Chuck


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I often see people add refrigerant to a system that has air trapped in it. Air can enter the low side if the system becomes low on refrigerant and goes into a vacuum . If this is the case, then it will not cool properly until all the air and moisture is removed from the system and charged with 100% refrigerant.. Air is a non-condensable gas and when trapped in the system will cause it to be inefficient. Also, if there is moisture in the system then it could likely turn into ice crystals and cause a restriction. If I were addressing this vehicle then the first thing I would do is to evacuate the system, pull at least a 30 minute vacuum then recharge with the proper amount of refrigerant. Only then can someone tell if there are any other problems through reading with a low side and high side gauge. Good luck, Chuck


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Question Answered: 

Sounds like you may have a defective lock cylinder. There may be a PATS module or anti theft device on your vehicle and you may end up with programing issues when changing the cylinder. You may also want to contact a General Motors dealership. Your vehicle may still be under warranty or there may have been recalls on this particular problem. Good luck


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I have over 25 years of professional experience and I would highly discourage you to do it.. Can you, yes.. should you, No. Here is the reason.. These transmissions are very complex, unlike the C-4's C-6's , turbo 350's and 400's from years ago.. A lot of electronics and smaller clearances .. I would buy a remanufactured unit, install it and be done with it. Most of these reman uints come with a 100,000 mile warranty or 36 months, whichever comes first.. Jasper Engines and Transmissions is where I would begin. If they build this unit then I would buy from them. They are the nations largest and for a good reason. Best of luck. Chuck


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I have seen so many bizarre things in this industry that I am never surprised at anything anymore. Is this likely from the accident ? NO.. Is it possible ? Yes.... If you press your insurance company they will likely pay for the flywheel and the labor to have it replaced.. Stay on the insurance company and they will usually bend.. Call your adjuster and use these exact words.... "my flywheel is not worn out... it is broken" "It wasn't broken prior to my collision." Best of luck Chuck


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There is a rubber grommet that may have fallen out of the brake pedal.. The brake light switch has a plunger that hits the grommet. If that grommet is gone then there will be nothing to depress the plunger on the switch which will make the lights stay on. Get a flashlight and look up your brake pedal and find the switch.. it should have at least 2 wires going to it. It will have a plunger on it and that plunger will rest against a grommet when the brake pedal is not depressed.. Make sure that grommet is still in place. It is a simple part to install and they car very inexpensive.. It will have to be purchased from the dealership. They usually are not available aftermarket.. Good luck Chuck


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Call your local Jeep dealership and give the service department your VIN.. they will advise you.


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Could be a headlight switch, hazard switch or a ground problem. Not sure what circuit your tail lights are on but you will need a wiring schematic to trace down the power and ground circuits to determine if it is a component or a wiring problem.. Best of luck, these things can become a nightmare.. Chuck


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