Top 20 1999 Jeep Wrangler - Page 4 Questions & Answers

why not diagnose it and not GUE$$ why not say, if heat fan works, does it????? that is first ? and if engine reaches and holds at 180F temp or more. does it? it only takes 2 things to get heat. 1: hot water 180F passing through the core, (easy tests ,ask) 2: air actually flowing through the core. just 2 things, and easy tests. ask. getting hot air to where you want it, that is a whole other matter (dampers) the answer is here. (basics) http://www.fixkick.com/AirCond/heater.html

does the blower blow full speed on high you can hear it, and if 1 vent is open , you can feel it. does it? that be first. ask for more.

try to change you car battery and then shift to park and try to start the engine if that didint help contact me on [email protected] i will help you to get it back agian

It could be a gudgion pin on the piston that is loose and touching the cylinder wall. It could also be the beginning of a piston and bearing failure. If it is a diesel engine check the injector.

http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service read that section in the FSM.

Need to adjust #3 valves. They are still a little loose sounds to me.

Assuming that you have the proper amount of coolent added, check where your heater hoses connect to the engine block for rust and corrossion, this is a common area to clog up, preventing coolent flow from circulating through your heater core. If ok, check for a thermostat that is stuck open.

double posted , backup one.

remove the blower motor see if it went there

unhook the battery for ten minutes then drive it for a few hours it should reset the pcm.

I had a similar problem with my Honda, it turned out to be the ignition switch. I found a used one on a online used auto parts store.

You should have a 12volt test light. Then just turn on the key and check all the fuses. Probe with the icepick end on each side of fuse. A blown fuse will light the light on one side but not the other.

if its a 3.8 liter down on the right side of the engine below the head

Try checking speedometer cable by unhooking both ends and spin it by fingers, if cable is good both ends will spin, and guage could be bad or where it attacheas to transmission that part could be bad to.

cluster or speed sensor

Could be speedodometer cable broke inside cable housing or speedodometer cluster could be bad.

cooling fans not working and too much freeon

Check all your fuses, check power to your coil, I doubt the crank sensor was bad unless it threw an engine light at you. Ohm out your plug cables.

Get replacement line at parts store. Unscrew one end from radiator and other end from transmission. Use in-line wrench to tighten replacement line and be careful not to overtighten and strip the fitting. Run motor for a few minutes, when warm check the fluid level. 'DO NOT' overfill.

check the bulbs and fuses and brake light switch