Idiot Lights

[BryceOJ]

Hoping this will be an easy question to answer and an easy problem to fix . So I have the idiot light cluster. And aren't all the lights for warning bulbs supposed to illuminate when the key is switched to on? When I do it only the oil and battery light come on. The temperature light doesn't come on. I replaced the bulb thinking it was burnt. But it's not the case. Will replacing the temperature sensor fix that? Or is there a disconnected electrical wire?

[yxmj]

Just a guess but the lights would signal......low oil pressure......no or high battery voltage......overheating....

 

So with a cold motor you would have....no oil pressure (light on) no power (light on)....motor under overheating (light off)

 

?????????????????????? . :MJ 1: .

[BryceOJ]

I'm not sure. Maybe so. I just figured like in any other car when you turn the switch before you start the engine all warning lights turn on to do a test to see all light come on and then once started turn off?

[yxmj]

I'm not sure. Maybe so. I just figured like in any other car when you turn the switch before you start the engine all warning lights turn on to do a test to see all light come on and then once started turn off?

 

A 1988 car or older?????????

[BryceOJ]

I guess not lol

[benjy_26]

I only get oil and voltage lights come on when starting up my 87 SporTruck.

[BryceOJ]

Okay I think that mine are fine now. The sensor may have gone bad though

[schardein]

I just noticed this on mine the other day.  Key on, not running, oil and volts light up as a test (I assume).  After I fire it up, the water temp light comes on for a second and then goes off.... again i assume as a test?

[BryceOJ]

I noticed it too once I looked more closely, so My bulb clearly works  maybe my sensor has gone  because when my engine overheated, the light wasnt on.

[Heavy Metal]

Anybody know what temp is required to trigger the overheating light? 

 

Edit: Just realized how old this thread is, sorry for raising the dead.

[benjy_26]

No hate here for raising thrrads from the dead. I figure if someone can learn from it, it's all good. I just got an electronic copy of the FSM. I'll look at it and see what I can come up with..