20 Most Recent 1990 Jeep Wrangler - Page 9 Questions & Answers

Is this an optical issusion and the indicators are merely being "flooded " by the wash of light from the headlights. Try a stronger bulb in the indicators or use amber bulbs if not already fitted.

you could check if the fuel in the car is not got dirt in it or other stuff.drain some in a glass and see for impurities.

Sounds like a leaking master or slave for the clutch that is not permitting full disengagement. If it only happens when cold it could also be caused by incorrect lube (too heavy) in the transmission, but that is unusual.
Make sure the fluid in the clutch master cylinder is full and that there is no visible seepage where the rod enters from the pedal and that there also is no seepage at the slave unit.

Check the fuel for a presence of water. I'm sure there was a recall notice on the gasket on top of the fuel tank where the sending unit mounts. My YJ sat for a year and had water in the tank from this leaking. Drain and drop the tank, replace the gasket, and reinstall.

Check your Crankshaft position sensor

i would recommend you connect a fuel pressure gauge to the engine fuel rail port and watch the fuel pressure as you drive it note fuel pressure should be between 31 and 39 psi and stay there while vehicle is being driven. if it drops check the wiring to the pump in many cases the pump connector is burned and losses connnection. also try watching the egr see if its diaphragm keeps surging try disconnecting the vacuum hose to it see it any change is noticed, common problem 4.0 engines of that year EGR's cost about 90 dollars but help stalling and emissions problems greatly.

So the Jeep has a hard top....... or you bought a hard top to put on your Jeep that originally did not come with a hard top. You can forget Chiltons for good info. If there is no switch, the wire harness may/should be there, so you need to install a switch and relay. The harness ends up at the left tail lamp area. The relay is up above the parking brake pedal. 5 wires. Brown. Brown/White, Black/Yellow, White/Black, and Black (ground) The harness should be there to connect a rear wiper switch in the dash.

Correct me if I am wrong.A new pump was put in.Mechanical.The old pump was mechanical.For the last 20 years it has worked.Now they say a new pump isn't going to work?And its mechanical.Mate! Sounds like someone is having a lend of you.I would really question the work they have done.The pumps are just about bulletproof.Chase this up.Hope this helps

hmmm.... did u connect the cables in the right way?

Your fuel filter is probably plugged - change out the fuel filter. The location of the filter depends of which motor your truck has and the type of fuel injection system - a throttle body system typically has a fuel filter mounted into the throttle body whereas a multiport usually has the filter mounted to the frame rail, close to under the drivers seat. Determine which configuration you have and go buy the filter - this will help you to determine where it is and what it looks like.
Hope this helps!!

http://autorepair.about.com/od/enginefiringorders1/Engine_Firing_Orders.htm

check for power in the big fuse box sounds like you have overloaded a cable from the battery to this supply box also make sure the earth from engine to chassis is connected

Use a test light to see if there is power going to the horn. There could be a blown fuse or you may need a new horn itself.

you can try the dealer they will have it in stock or will order it.i found 1 for my 89 6 cyl at advance auto parts in a small section where the vacume line connectors and window crank knobe are by the oil section.if u have the old 1 its easier to mach up, or u can use a piece of paper and trace the diameter of the whole and compare it to the new grommets center diameter.

in the back of radio