Question about 1988 Jeep Cherokee

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88 Jeep Cherokee, left turn signals don't work. Right signals flash as they should. Emergency flashers work as well. When the left turn signal is activated, the dash arrow lights up, the front bulb lights up and the rear bulb lights up but the flasher doesn't click. The flasher was replaced to rule it out and because it is easy, the left rear turn signal bulb was replaced and the front bulb was checked. It seems to me then next item to replace would be the turn signal switch. Any thoughts?

Posted by Anonymous on

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  • Jeep Master
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Quite a puzzle you have that seems impossible, though such things weren't unusual in the old days of bimetal flasher units. The modern electronic flasher relay is designed to flash at a speed dependent on the amount of current drawn by the circuit so if a bulb goes out the speed doubles or thereabouts, giving the driver an indication something is wrong.
Broadly speaking the flasher unit will operate as it is designed within a current range so if there is too much current flowing or not enough it probably won't work at all.

The turn signal switch is usually a very reliable thing and as the left hand lamps light it is fair to assume it is working ok. If the switch is accessible it would be simple to measure the current being consumed by the circuit, which would be nearly 4 amps with the engine running at a fast idle. If it isn't then I suggest you revisit the lamp grounds and other connections.

My instinct is to suspect the hazard warning switch. It is often an unnecessarily complex switch and wiring arrangement and often responsible for turn signal malfunctions. Mostly operating the switch rapidly for a few minutes puts matters right, though if it doesn't I suggest you check the multiway connector behind the switch.

Posted on May 28, 2017

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Posted on Jan 02, 2017

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Anonymous

  • 1 Answer

SOURCE: turn signals not working --- 2001 Cherokee Limited

It happened to me, I had to replace the flasher lever for about $45 at the parts store and now my flashers work great. It was all corodded on the inside it also affects your brake lights.

Posted on Nov 17, 2008

Anonymous

  • 131 Answers

SOURCE: Left flasher dead, right on works

double check your bulbs again, if still good
check your flasher

G

Posted on May 10, 2009

roniecon

Ronny Bennett Sr.

  • 6927 Answers

SOURCE: 1989 jeep cherokee pioneer. Right hand side turn

The turn signal switch is bad,replace it to repair the problem.

Posted on Jul 05, 2010

eric r barnes

  • 580 Answers

SOURCE: signal lights don't flash

Change the signal light flasher. I'm not sure exactly where it is but it is more than likely under the dash near the steering coluum or close to or in the fuse box. Good luck!

Posted on Jul 25, 2010

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