Question about 1998 Volvo S70

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I have a 98 S70 turbo ~171000 mi. car will start

I have a 98 S70 turbo ~171000 mi. car will start and run for short time, then shuts off and cannot be re-started until after having remained off for a while. Retrieved P0410, P0243& P0103 from obd. P0410 is there because air pump failed long ago and was disconnected. need help on other codes. Thanks

MSJr09

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  • squirem May 06, 2009

    Will give these suggestions a shot. Stay tuned....

    Thanks

  • squirem Jun 22, 2009

    Finally got chance to check your suggestions, i.e. fuel relay and fuel pressure. Both pressure and relay appear ok. Borrowed fuel pressure gauge from local parts house and pressure was ~ 40 psi at ignition ON (not start). Bleed down exeeded time specified by volvo shop manual. Car still will not start. Shop manual troubleshoot procedure recommended, checking spark, all OK (Installed new spark plugs also). Manual suggests trying Mass Air Flow meter. Any thoughts on MAF as cause of problem?

  • squirem Aug 06, 2009

    Final resolution of this problem was the MAF (Mass Airflow Sensor) Thanks.

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THE FIRST THING IS TO CHECK FIEL PUMP PRESSURE AND FILTHER AND THE RELAY IT IS IN FUSE BOX WITH A J and it is black and if it gets too hot engine will shut down and you will have to wait until relay cools 850,s and S70 models have this problem especially in th A/C CIRCUIT

Posted on May 05, 2009

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That will get you closer to the actual problem.

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98 volvo s70 stalling out, then finally after a day wouldnt start


If the air pump system is setting a fault, then the check valve is probably bad. If it is not addressed, eventually exhaust gases can run back through the air hose to the air filter housing and destroy the MAF sensor, causing these types of problems.

The fuel pump also fails and is a more likely cause of the stalling, and it wont set a code.

Feb 06, 2009 | 1998 Volvo S70

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