4x4 light

[87manche]

so, is my 87 supposed to have a 4wd light on he dash?

I shift to 4wd and I get no indicators. $WD is engaged, I found a gravel parking lot and spun a tire on both axles.

Man, I wish I could find a manual

[DirtyComanche]

There's a sensor under the coolant resivoir bottle, bolted to the fender, if memory serves.

 

The dash light might be burned out.

 

 

And yeah, they all got them, if it is 4wd, I think.

[87manche]

ok, I'll find the sensor and check that.

then move onto the dash light.

Thanks for the info DC.

this place is great.

[512tr]

so, is my 87 supposed to have a 4wd light on he dash?

I shift to 4wd and I get no indicators. $WD is engaged, I found a gravel parking lot and spun a tire on both axles.

Man, I wish I could find a manual

 

You can download a pdf manual from Yahoo Comanche Club.

 

http://autos.groups.yahoo.com/group/jeepcomanche/files/

 

It's the Ovner Manual for a 1990 mod :)

[Bounty Hunter]

Check the 3rd vacuum connection at the front axle disconnect, it's the one that signals the 4wd light.

[87manche]

thanks for the info fellas. I'll look into the vacuum line for blockage and such. I take it the sensor in the engine compartment is the vacuum switch?

[Bounty Hunter]

It's a vacuum operated switch. Vacuum operates the front axle disconnect, and this switch detects the disconnect is engaged via vacuum from the disconnect. The switch then activates the dash light.

 

Newer jeeps have an electric 4wd switch right at the front axle disconnect.

[87manche]

well, I crawled under there last night, it looks like a PO replaced that vacuum line to the axle and just didn't bother hooking up the switch. I'll have to figure out how to hook it back up when it's daylight.

[cjharr]

so, is my 87 supposed to have a 4wd light on he dash?

I shift to 4wd and I get no indicators. $WD is engaged, I found a gravel parking lot and spun a tire on both axles.

Another possibility is the 4wd vac switch on the xfercase (as I found out replacing vac lines) when my light would only stay on constantly. The switch was approx $15 from Orielly Auto.( Hint: Use Orielly, Advance Auto, Partsamerica, or Autozone against each other for the best price on anything that you have to buy from them. Just make sure the part numbers match up)

[87manche]

well, I'm pretty sure that the light is just burnt out. Quite frankly it doesn't bother me that much. I know when I've pulled the t-case handle, and I don't park in 4WD. I only use the 4wd in dire situations anyway. I'd prefer to just drive in 2WD all the time. I've got to take the dash apart to fix the heater controls and install a new radio soon. I'm gonna take that extra step and replace all the lights.

[Frankensteinsmj]

mine don't come on either so I guess your not the only one. :(

[pingpong]

I think I have a few of thos vacum switchesd in the shed, along with a VD actuator or 2.

 

 

 

Patrick