Car stalls VERY intermittently...can go weeks without a problem- then stalls without warning. Sometimes starts right up afterward, lately, it's harder to restart- but then runs fine. Seems to happen only after a longish drive- 30 min or more- but not EVERY longish drive- only has done it when sitting stopped- ex, end of exit ramp, stopped for light, stopped to make turn at intersection. No codes- dealer has no idea what else to do - started to happen shortly after ABS system replaced end of 2007-probably just coincidence, but I HATE coincidences in CARS! -not sure what else to tell you- have tried gas treatment, dealer replaced oxygen sensor, and a few other items ($2000 in repairs in last 18 months!)-no effect
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Re: 1998 Volvo S70 stalls intermittently
Have tried getting quality gasoline at a reliable station? It sounds like water in your fuel system. Add a couple bottles of Iso-Heet fuel system dryer everytime you fill up the next few times, and that should cure it.
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before I do a job like this i always buy a haynes repair manual for my year and car. take the time to read up on this and then well knowledged i go for it.
Good luck and thanks for your question and I hope my suggestions help. Don't forget to rate me. burdfrenzy
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1998 Volvo S70 AUTOMOBILES
Includes starter and alternator replacement procedures for domestic and imported 1998 Volvo S70 cars and light trucks from 1990+.
Alternator, Replace -> With Air Conditioning -> Without Air Conditioning Vehicle: 1998 Volvo S70 2.3 L5 GAS
With Air Conditioning
Disconnect battery ground cable at battery.
Detach pipe from control module box.
Remove auxiliaries belt.
Remove power steering pump and place it on top of engine.
Remove upper bolt.
Remove bolts common to alternator and compressor; lower bolts on alternator and upper bolts on compressor.
Raise and support vehicle.
Loosen lower bolts for compressor (so that there is some clearance).
Remove air baffle.
Disconnect warning lamp positive lead and connector from alternator.
These models had a problem with the electronic control modules, and this is what controls the idle speed. Sometimes they just need to be cleaned, but sometimes they are defective. Volvo has extended the warranty on some of them to 10 years or 200,000 miles if it is found to be defective.