One spark leads to another
09-12-2003, 01:35 AM
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One spark leads to another
I replaced the speedo in the '84 recently. It, and the odometer work great now. Trouble is, my turn signals became intermittant. Not the good, flashes-at regular-intervals kind of internittant, either. Sometimes, engaging a signal would do nothing. Others, the signal would come on, blink a few times, then stop. Hazard lights didn't work right, either.
I swapped the good, working signal relay from my 82 into the 84. The 84's signals worked after doing this. Since the problem is sparatic, I'll have to drive it more and see if it keeps working to be sure. So far, so good.
Finished, I close up the car and try to lock it w/ the aftermarket keyless alarm (PO's doing, but always worked perfectly). Its chirps and blinks, but the power locks do nothing. Turning the alarm off, I try several more times to lock and lock the doors with the key, and from the inside. The central locking isn't triggering; the motors are playing dead.
Until now, the lock motors would always come on on cue. The driver's side motor is somehow misaligned, so it will always lock fully, but it sometimes only turns about half-way to unlock. Othwise, perfect operation.
It seems each thing I fix breaks something else
I swapped the good, working signal relay from my 82 into the 84. The 84's signals worked after doing this. Since the problem is sparatic, I'll have to drive it more and see if it keeps working to be sure. So far, so good.
Finished, I close up the car and try to lock it w/ the aftermarket keyless alarm (PO's doing, but always worked perfectly). Its chirps and blinks, but the power locks do nothing. Turning the alarm off, I try several more times to lock and lock the doors with the key, and from the inside. The central locking isn't triggering; the motors are playing dead.
Until now, the lock motors would always come on on cue. The driver's side motor is somehow misaligned, so it will always lock fully, but it sometimes only turns about half-way to unlock. Othwise, perfect operation.
It seems each thing I fix breaks something else
09-12-2003, 01:48 AM
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That's exactly how I feel sometimes.
One of my dreams would be to go through the entire electrical system and replace every wire, every connector, fuse and relay of every system. A couple of weekends ago, I was trying to troubleshoot my electric fan problem and spotted some more of the PO's aftermarket alarm wiring. I must have taken out an additional pound of wiring, zip ties & corrugated flexible tubing. Oh, and don't forget electrical tape...
Rob
One of my dreams would be to go through the entire electrical system and replace every wire, every connector, fuse and relay of every system. A couple of weekends ago, I was trying to troubleshoot my electric fan problem and spotted some more of the PO's aftermarket alarm wiring. I must have taken out an additional pound of wiring, zip ties & corrugated flexible tubing. Oh, and don't forget electrical tape...
Rob
09-12-2003, 10:11 AM
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Jessa;
There is some electrical interplay between the turn signal relay and the instrument cluster. I just have the '85 wiring diagrams to go by, but the TS relay does feed into the instrument cluster for the trailer flasher bulb (K5 on my wiring diagram). Just wondering if your cluster R&R may have disturbed this connection...I am not even sure this would have any effect on the turn signals, but could cause a problem, I guess. Maybe is was just a bad TS relay and your swap will work out fine.
I wonder if the the alarm and the turn signals might be interconnected, however. Is it possible that the alarm activates the flasher circuit to show that the car is armed/disarmed? Or is it the park lights?
I guess the normal comments on aftermarket alarm systems apply here. They seem to always be involved with electrical issues when present.
Regards,
SteveCo in St. John's
There is some electrical interplay between the turn signal relay and the instrument cluster. I just have the '85 wiring diagrams to go by, but the TS relay does feed into the instrument cluster for the trailer flasher bulb (K5 on my wiring diagram). Just wondering if your cluster R&R may have disturbed this connection...I am not even sure this would have any effect on the turn signals, but could cause a problem, I guess. Maybe is was just a bad TS relay and your swap will work out fine.
I wonder if the the alarm and the turn signals might be interconnected, however. Is it possible that the alarm activates the flasher circuit to show that the car is armed/disarmed? Or is it the park lights?
I guess the normal comments on aftermarket alarm systems apply here. They seem to always be involved with electrical issues when present.
Regards,
SteveCo in St. John's
09-12-2003, 03:39 PM
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I guess my description was a little vague. No lights on the car have ever flashed in responce to the alarm. Either none are supposed to, or this part of the setup broke before I bought the car. It has a red LED installed in the consol that blinks when the system is armed.
09-12-2003, 04:16 PM
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No worries...I just assumed the lights flashed...not from your description. Let's hope the relay swap does the trick...if not it's electrical troubleshooting time!
09-12-2003, 07:14 PM
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Testing in traffic on a hot day has revealed that the windows no longer roll down! The new relay has fixed the turn signal problem.
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09-12-2003, 10:42 PM
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Relay 6
Hi Jessa,
Don’t feel too bad. There are others like you. See some links to discussions below.
The short of it,… It is probably relay 6 if the windows and door locks don’t work. If the sunroof does not work too,… gotta’ be relay 6.
Something you can try first is polish fuse 1 (EDITED clarification: fuse 1 is Central Locking on 86 model, but not on 84.), and apply dielectric grease. Also, screw door switch pins tight. Wires will fall off easily if you remove pins.
Let me know if I helped.
Door Lock Problem:
https://rennlist.com/forums/showthre...184#post744184
https://rennlist.com/forums/showthre...hlight=mystery
https://rennlist.com/forums/showthre...416#post728416
Don’t feel too bad. There are others like you. See some links to discussions below.
The short of it,… It is probably relay 6 if the windows and door locks don’t work. If the sunroof does not work too,… gotta’ be relay 6.
Something you can try first is polish fuse 1 (EDITED clarification: fuse 1 is Central Locking on 86 model, but not on 84.), and apply dielectric grease. Also, screw door switch pins tight. Wires will fall off easily if you remove pins.
Let me know if I helped.
Door Lock Problem:
https://rennlist.com/forums/showthre...184#post744184
https://rennlist.com/forums/showthre...hlight=mystery
https://rennlist.com/forums/showthre...416#post728416
Last edited by Thom1; 09-13-2003 at 09:46 AM.
09-13-2003, 06:48 AM
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The problem had been solved! I made a stupid mistake and swapped relay VI instead of V. Upon double-checking things, its seems that my '82 has had the wrong relay in VI all along. I suspect putting the wrong part in is what blew the fuse. Why this hasn't been an issue in the other car is a mystery. The actual signal relay was very loose. A good shove fixed that!
Looking so carefully at the fuse & relay panel has raised another question. Fuse 22 is missing. The chart in my owner's manual says this is for the fuel pump. The car runs, so the fuel pump must be getting power, right? Is my chart wrong, my car "creatively" re-wired, my brain dead, or all three?
Looking so carefully at the fuse & relay panel has raised another question. Fuse 22 is missing. The chart in my owner's manual says this is for the fuel pump. The car runs, so the fuel pump must be getting power, right? Is my chart wrong, my car "creatively" re-wired, my brain dead, or all three?
09-13-2003, 07:20 AM
#10
I assume you mean that the 82' doesn't have fuse 22 in place...
Either way it would seem that the power source to the fuel pump has been 'jumped'.
If no jumper is visible it has been wired to another fuse location, in which case:
1. You can trace the wires- i'd be to lazy-.
2. You can pull the fuses-while at idle- one by one till the pump no longer runs and the engine fuel starves. I'm lazy on this one, too.
3. Check fuse location #7, or, #13 which are unused fuse slots on the Weissach. PO may have tapped into one of em'. It will have a fuse of 16 amps or greater if it's running the fuel pump.
BTW About those wheels?
Either way it would seem that the power source to the fuel pump has been 'jumped'.
If no jumper is visible it has been wired to another fuse location, in which case:
1. You can trace the wires- i'd be to lazy-.
2. You can pull the fuses-while at idle- one by one till the pump no longer runs and the engine fuel starves. I'm lazy on this one, too.
3. Check fuse location #7, or, #13 which are unused fuse slots on the Weissach. PO may have tapped into one of em'. It will have a fuse of 16 amps or greater if it's running the fuel pump.
BTW About those wheels?
09-13-2003, 09:52 AM
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Hi Jessa,
Glad to hear you fixed it. BTW, fuse 1 is the central locking fuse on an 86 model. I looked at your fuse and relay chart today, and found some differences.
See: http://www.928gt.com/928specs/83-84relay.htm
938 specialists site for specs.
Glad to hear you fixed it. BTW, fuse 1 is the central locking fuse on an 86 model. I looked at your fuse and relay chart today, and found some differences.
See: http://www.928gt.com/928specs/83-84relay.htm
938 specialists site for specs.