Jeep XJ

[Ah Pook]

Here is a DIY thread for a fix'n Jeep thangs.

Workin' on a '93 Xj, 4.0l.

Been doing some fix it work on the new (to me) XJ. Replacing air/oil/gas filters, dist/rotor, pugs/wires, sway bar bushings... You get the picture.

First problem was today. Went to replacing the front washer fluid pump. The old one was dead. Plugged the multi-meter into the plug switch. Push the "paddle" forward the wipers start and the meter shows 11.5 volts. Plug the new pump in and push the paddle, nothing happens. MM shows 0 volts and no wipers. Tried the rear pump and same thing. Even plugged in the "float level switch".

Any ideas?




Feel free to add other XJ problems here.

[Irving]

I hope this is a universal electrical problem, because the rear pump on my Amigo doesn't work and the rear wiper is intermittent.

[zteknik]

I hope this is a universal electrical problem, because the rear pump on my Amigo doesn't work and the rear wiper is intermittent.

Ive seen a few that had bad connectors at the wiper motor that was the culprit.

[zteknik]

It had voltage with the old one and now with the new one there is no voltage?
Check fuses and or relays,could have popped one when removing it -or it could be the switch-paddle is bad and not completing the circuit.
Check the voltage before the switch and after

[Ah Pook]

Muti-meter plugged into the plug, nothing else. MM reads 11.5 v. The plug/fuse has power. Plug it into a pump and there is nothing.

[zteknik]

Ok now let me see if I understand-the plug that your taking readings on with your mm -is it the one that plugs into the pump?

If it is it sounds to me like it might not be making full contact to the pump-pins on connector spread or pushed in.
Do a quick check on the pump-hook up power directly to it should work, if it is a new pump.
If it does and your getting voltage at the plug,you need a new connector.

[Ah Pook]

Yes. The same plug for the front pump.

The plug is a new two blade style. It is making good contact. The new pump works fine. I plugged it into the rear fluid pump plug and it works.

[Ah Pook]

Going over it in my head...would the pump work if the +/- wires were switched on the new plug adapter?

Not going out to check that theory today. It's 10˚ and snowing.

[SideShow Bob]

If the new pump motor was hooked up with reverse polarity it would blow bubbles (there is a joke for that) into the reservoir, can you connect your meter in the back side of the connector with it hooked up to the new pump ? If you can, check the voltage while connected and pushing the switch.

[Ah Pook]

I did check the voltage when the pump was plugged in. Voltage was 0 with the switch turned on.