Hello, I have a '86 760 Turbo. I had my alternator rebuilt, and the place told me that they could not find the exact voltage regulator for my alt. They install a similar to the one needed for my car. My lights flicker and my voltage gage moves back and forth. I took it to another auto electric and was told that the alt is not charging more that 13.5 volts and that I should not worry. Bot now I am having a problem with rough idle. I replaced the injectors with rebuilt injector 5 years ago, maybe they are dirty. I still have the original injectors, I was thinking about having them professionally cleaned and installing them. I don't know if the voltage fluctuation is causing a problem with the injectors. On the gas, the responds very well, but at idle, the engine shakes and even sometimes surges, it even stalls if the car is cold. Back to the alt., could it be the diodes or the regulator? Could the alt be causing my injector problems? Also, is it normal for the OD on 4 speed stick not to enter OD until the it has been driven 5 or more miles? Almost like it wont shift while cold. I replace the trany fluid every other year. Thank you in advance for any help, and sorry for being long winded.

'86 760 Turbo, 197k

If the lights weren't flickering before the alternator rebuild then I'd suspect the alternator. Never mind rebuilding it using non stock components. Just get a good used one off e-bay if you don't have a PYP yard handy. Check and clean all the electrical ground connections on the inner front fenders.

First, your year group has the infamous engine wiring harness rot. If original, can causes many problems.
Alternator. Find another shop or shop online. FCPgroton.com Battery cables, connections, etc.
Idle-dirty Idle control valve or throttle body
OD-maybe the OD guru will chime in.
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I replaced the harness when I bought the car, I also cleaned the IAC and the throttle body. One more question, what is the light on the dash that is between the light out warning and the shift indicator? My dash is missing the plastic peaces that are in front of the warning lights. The light comes on after I start the car and will go off when I accelerate, come back on when I take my foot off the gas. Does the same going up a grade, will shut off and going down it will come back on. Light frustrates me to no end. Thanks again.

It may be the windshield washer fluid level low.
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