Sloooooow turn signal

jo_ratner did pass the time by typing:

The bulb, bad contacts, or a failing ground.

Juan and Angie did pass the time by typing:

Yep. Here is the usual cause.

Could be a bulb or the flasher unit. Eitherway it's a $10 fix.

You have a crappy connection somewhere.

Our Cherokee does this and the contact inside the fuse panel where the flasher plugs in is corroded. I clean it up and it lasts for a while, then goes slow again.

A dirty connection on one of the bulbs can cause it too.

The light fixtures also use the bolts holding them on for the signal and brake ground. If one of those is dirty it can cause it. I use a long booster cable from the battery negative to the fixture to test the ground.

Mike

jo_ratner wrote:

The flasher doesn't know which set of lights is on, if that were the problem his signal should be slowed for either direction. He specified left only.

Some trouble-shooting suggestions:

Does the signal speed up when you step on the brakes? If so, go directly to the part about fixing the rear lamp ground.

Turn on your 4-way flashers. Walk around your Jeep and see if any of the lamps are dimmer than the others.

If you find one, swap that bulb for its mate on the other side, test again. If the dim bulb moved, you've found the problem.

If there is a dimmer lamp and it didn't move when you switched the bulb, the problem is in the circuit, most likely the ground.

For front lamps the ground is through the mounting screws. Clean the rust off and re-mount.

For the rear lamps, look for a wire tag from the housing to a sheet metal screw, probably on the inner splash panel at the rear of the wheel house. The splash panel is pop-riveted to the wheel house and -- being nearly two decades old -- rusts. If this is how your Jeep is set up you'll need to run the ground wire to a better ground on the body or the frame. If this was the problem, fix the other one now, while you have the tools out.

A poor ground will cause this. A bad bulb will do it too.