I'm hoping that someone can give me some direction with this problem -
i have a 1990 volvo 740 turbo with about 290km on it which i have owned
now for about 4 months - just recently it has begun to give problems
starting when still hot
i tested the coil and sometimes (when hot or cold) it reads high resistance so i replaced this - no change in hot starts
since fuel was getting to the engine i replaced the fuel pressure
regulator on the off chance that it might be faulty - no change in hot
i tested the battery for standing voltage, charging voltage and a load
test and everything appears normal - changed the battery for another
that i had in another car - no change in hot starts
checked for spark and it appears to be healthy although there was a
slight red/orange tint to it and not the fat blue that it should be
the only thing that appears to work it a jump start after which it runs like a top - any suggestions???
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The wiper motor is underneath the metal bonnet in between the wiper arms (the piece that looks like an air scoop) the comes out hard through prying and sometimes there are 4 screws that hold it in. Inside the engine bay. When prying the bonnet off start from the drivers side top and work your way across the top. Then once that is off then it is only 2 10 or 12 mm bolts. and a plug and that's it.
Go to an auto supply store like PEP boys or Advance Auto, etc., and buy a Haynes Repair Manual for the 740. You may be able to consult one at your local library for free. Even if it doesn't cover your model year, the replacement instructions are pretty much the same for all years. in fact even a 240 Volvo manual would be essentially the same. Pay particular attention to the installation instructions....you have to slide the pump on, and then rotate it a few degrees clockwise to make the upper o-ring seal. Good luck!
Maybe bad Power Stage/Inquiry:driving down the highway at @ 60mph with 1/4 tank of gas in 100 degree temp inwell kept 84 760 Turbo; car just dies, engine turns over but will notstart] [Response:] Well, when my '84 760 Turbo died for no apparentreason as you describe, it was in the freezing dark, going over Donner Pass.Everything on the car worked except no spark and the engine wouldn't run. It turned out to be the ignition module, which is mounted on the inner driver'sside fender well, above the battery, close to where someone else mentioned theballast resistor was located. It's easy to get to and replace. Ifthat turns out to be the culprit, shop around before buying the new part. Volvo dealers charge several hundred $$$ for this thing, but I found one froman independent parts distributor for about $90 - the identical part madeby BOSCH with the same part number on it.
we have the same car, i would have a mechanic check the ECU. thats the first step in finding out what is wrong and why its burning so mutch fuel. it could also be your air filter, but then agian, you wouldnt be burning a tank of gas a day. well hope you get it fixed.