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Hi all,
Have an 88 780 Bertone with the b280. I was having some electrical issues earlier with the car, and replaced all the battery/starter cables. Still wasn't getting a reliable charge situation, so I took it to my excellent Volvo mechanic.
He corrected some issues in the wiring harness from some attempts to repair the harness done by a previous owner. Now the car starts, charges the battery, and puts the Volvo voltmeter into the center of the gauge (and I know they're not accurate much of the time). The gauge even stays in the good range with all lights and accessories working. So all that is good.
Since his repairs, the car always starts first turn each morning. Always starts first turn after sitting more than 4 hours. Most of the time it will start after being turned off and then back on after a short trip (under 10 minutes). But if I do a trip with more than 3 stops (turning the engine off each time) within 15 minutes, it often won't even make a click.
At that point, I have two things I can do. Keep turning the key to the start position and it will sometimes kick back in (about 60% of the time it will), or wait 15-30 minutes and try again. Or if I'm at home, just get in the old, reliable 244 and go...
I've had the battery checked, alternator and voltage regulator checked. They're all good. The radio is an aftermarket piece of crap, and has very bad, very crackly reception. I don't know if that means the radio suppression relay is bad, or it's due to the power antenna that won't go up.
Is there a relay or several relays that are the most likely culprits here?
And this Bertone might have had a an aftermarket (or OEM possibly) theft prevention system installed. If anyone has any info on whether 88 780's came with a system, that could also provide some tips here.
It's been too cold to mess with this issue up until now, but with spring possibly arriving in the Midwest sometime soon, I'd like to make this non-start issue go away. Right now every time I turn the key off, I have this worry that it won't start up again when I need it to.
Many thanks for any suggestions on how to troubleshoot this one.
Bruce
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Here's an update on the 780 no-start situation.
Now that it has finally warmed up, I've been spending a few hours each weekend trying to correct this situation. I concentrated on cleaning up the wiring that went into each of the relays that sit behind the expansion tank. Found newer relay sockets from the yard and spliced in new wiring/sockets.
That improved things, but a few days later, the no-start after stopping resumed.
Went back to the wiring harness that runs down the passenger side of the engine bay, pulled the sheath away that surrounds the wiring and found a number of wires that were down to bare wire. So I replaced about 12 separate wires and the bullet connectors that go into the connectors.
Again that improved things, but I still had some no-starts. I thought it was temperature related, but my wife said that the days the car had the no-start were colder rather than warmer. A few days later, I realized that the outside temperature wasn't the key, but the temp under the hood was the value that mattered.
To test this, I unplugged the relay that controls the auxiliary fan, with the thought that if the underhood temp gets too hot, and tries to kick in the aux fan, perhaps that circuit is the one that is causing the no start. I don't commute on any busy roads where I could be stuck idling, so I'm not likely to be needing that aux fan.
Well, that was two weekends ago, and I haven't had any no-start after short trips since. Too soon to report that the problem is eliminated, but I'm pretty sure I've found the source of the problem.
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Two things: Please let us know how the relay was causing the no start, was it bad or is there place in the wiring or another part like the fan yet a problem. Second, you may want to know the oil temp sensor wire runs under the front of the engine and also can short. The sensor itself is in the oil drain plug and the engine oil temperature gage is on the upper right corner of the dash where the turbo gage is on turbo models or else a blank plate on non-turbo models.
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posted by
someone claiming to be CLAIM TO BE
on
Sat Apr 20 18:26 CST 2013 [ RELATED]
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Crank sensor
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If you take a hammer to your starter, try a wooden mallet, or a soft head one, I have read where a metal hammer can crack magnets in the starter.
Some starters suffer from hot soak - this is why waiting works.
One post I have read tells you to pour cold water on the hot starter, then try starting it.
--
'96 855R,'64 PV544 driver, '67 P1800 basket case, '72 Yamaha Rd400, '68 Honda 350-4, '12 XC70, the first 5 are mine, heh, heh, 525,000 miles put on 10 bricks James A Sousa
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If you had an antitheft system as 1988 models did, there would be a place where there were wires and a fob on the rear driver side window. The thing that lets you know for sure if you disconnect the battery, an alarm is set off also known as the horns. The fob was a series of reed swiches that required a matching key chain fob with magnets in the right orientation to decode the path to allow the alarm to clear and the vehicle to start.
You can always connect a test wire to the 51 terminal on the starter and monitor it. If you jumper 12 V to it, the starter should engage. If not, the solenoid is toast.
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posted by
someone claiming to be Peter Carone
on
Wed Mar 27 17:31 CST 2013 [ RELATED]
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Bruce,
How old is the starter motor? I've encountered similar problems with my 1988 760 V6. Next time it happens get a hammer and tap on the side of the starter a few times then try starting it again. If it starts then you may need a new starter. Good luck, Peter
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I'm pretty certain that the starter is the original one.
And this Bertone does have a theft alarm fob on the rear driver's side window. But I have no ides if this system was disabled before I got the car. I've disconnected the battery a number of times, and never had a peep from the alarm.
So I'm guessing it might be time to swap in a new starter. Are the starters for the b280 the same as a b230 would use?
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I had the same with my first 780 turbo, had to wait 5 to 20 minutes for it would start again. Someone told me it had to do with the length of the battery cable and when hot would not give enough juice to the starter.
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