[MainePorsche]

Originally Posted by 81headache

My car is running and driving I am very happy and thanks to all that helped me get here now for some annoying things.

1. Headlights...they go up but not back down not huge deal for I use manual knob in morning to put them down.

Get a new headlight relay. Even though the headlight motor has position sensors internally, these units are robust and don't often fail. The headlight relay is not robust. Swap one out with a buddy who has a similar year car for confirmation.

2. when i replace the blown fuse for cig lighter it just pops as soon as i turn key..I don't smoke but I think may be affecting other things.

The fuse is not the reason, but the message that something is amiss. It may affect other things if it is corrupting a ground. It is shorting some where. You need to look. Remove passenger side center console carpet panel and check the wiring.

3. passenger side window doesn't go up or down a new switch was installed last year I'm not sure if it was working then or not...could this be related to blown cig lighter fuse.

The switch is probably good if it is new. While center carpet panel is off check the wiring for the window switch. It lies there. The windows also have a relay, but failure would affect both windows. My money is on the wiring. Also, see recent window thread I posted to.

4. finally the heater ac not working if i move heater switch to hot it will let hot air out but fan doesn't work nor does anything happen when push ac switch..again could this be related to blown fuse and short somewhere.

I wrote this for someone once upon a time.


There is no "11 relay". The device in position XI is a spike suppresor.

The power to operate the A/C compressor clutch comes thru fuse #17 to Relay X, the blower relay. If the A/C blower works, the fuse and this relay are good - if the blower doesn't work, neither will the compressor.

From the relay, power goes to the A/C switch on the dash.

From the A/C switch, power goes to the A/C control head. There is a small relay in the control head that controls the power to the compressor clutch - this relay can fail.

The power then goes to the antifreeze switch on the A/C evaporator. If the evaporator gets below freezing, the switch opens, cutting off the compressor. Remove the plastic shield at the base of the windshield under the hood (careful - it breaks easily)and find the switch near the center of the windshield. Check for 12 vdc on both connections on the switch (ignition on, A/C on, air distribution lever on). If there is power on both, everything so far is OK. If there is power on one terminal, tha freeze switch is bad. If there is no power on either, fuse #17, the fan relay or the A/C controller relay may be bad. If the blower works, but there is no power here, the controller relay is the usual suspect.

From the freeze switch, power goes back to the central power panel, and goes to both the supressor in Position XI and out to the low pressure switch on the A/C receiver/dryer forward of the radiator. From there, power goes to the ccompressor clutch.

Likely blower relay in your case. Note fuse # maybe different. I don't remember what year car I wrote this for. The path is still the same.


I have checked all the fuses that may correspond with those and any other issues all fuses intact aside from one that has some sort of short.

Thanks for any assistance or ideas

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