Q: When trying to start my 97 Grand Cherokee it just screeches

These are the following definitions for the codes you've received: P0864 - Transmission control module (TCM) communication circuit -range/performance problem P0070 (https://www.yourmechanic.com/article/p0070-obd-ii-trouble-code-ambient-air-temperature-sensor-circuit-by-jamahl-walker) - Ambient Air Temperature Sensor - (possibly shorted but most likely not related) P0734 - Gear 4 Incorrect...

Hi there, thanks for writing in. If the headlamps are not coming on at all, then you may have an issue with the control circuit. The controls for these lights come from the body control module. It is common for...

Your engine can make sounds due to the low oil level. I would recommend having the oil filter housing gasket replaced by a qualified professional. Doing this will keep all the oil inside your engine that it needs. This will...

Hi there. If the key can go into the ignition switch and turn then the key is the right one. If the switch is not turning all the way, then the switch is damaged and needs replaced with the key...

Hello - the reduced power mode (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-the-reduced-power-light-on) your truck drops into is electrical in nature, and most often a problem with bad ground wire connections between the engine and chassis, and the chassis and battery. This is a wide-spread issue...

Hello. Yes a bad starter could cause a car to need a jump start every few days. Additional power provided by an extra battery could be enough to get a weakening started going again. Your vehicle may have a battery...

Hi there. Usually the reduced power light is caused by an engine component failure, like the throttle body, TPS or bad O2 sensors. It is very possible that the additional transmission fluid has created a trouble code that might have...

For the fuel and temperature gauges check the wiring to the gauges and see if they are connected properly. For the speedometer, the needle maybe in the wrong position and reading incorrectly. When taking off the needles to the gauges,...

Hello there. Thanks for the detailed description on your inquiry - it really helps us out. Based on what you have indicated, my first assumption would be that you have a loose serpentine / drive belt or a pulley that...