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1997 volvo 850R cold start issue

I have a 1997 Volvo 850R turbo with 200,000 miles on it. been a great car until the temp outside dropped below 60. Now it wont start till around 10am. Had my hubby change o2 sensors, spark plugs, ignition coil and mod, checked mass air mod... nothing has helped. Will it help to install a heat pad on oil pan?

Posted by dcline5150 on

  • dcline5150
    dcline5150 Jan 01, 2013

    Turned out to be the fuel pump relay. Put a new one in and problem solved! Thanks all!

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1 Answer

Bman

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  • 180 Answers

Could be an air temp sensor,you need a computer to check it but it controls air fuel mixture at different temp,almost like a choke but for modern day vehicles

Posted on Nov 18, 2012

  • dcline5150
    dcline5150 Jan 01, 2013

    turnded out to be the fuel pump relay relay. Put a new one in and problem solved! Thanks all!

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4 Related Answers

rampage1

  • 8 Answers

SOURCE: 1990 Volvo 740 GLE 16 Valve DOHC - Burning Gas

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.

Posted on Apr 07, 2009

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bradgreen

  • 166 Answers

SOURCE: car hesitates at different rpms in all gears on my 2004 mazda 6

Hi, it might very well be the electronic engine control system that is malfunctioning, among other probable causes. I'm not there in person, but I can help you go through the most probable causes of this accleration-hesitation problem that you have. In fact, here's a very good, handy diagnostic article exactly on your issue, detailing the six most probable causes:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_Hesitates_When_Accelerating.htm
Go through these to definitely solve your problem.
Brad

Posted on Jun 01, 2009

Bruce Hathcock

  • 3600 Answers

SOURCE: Volvo S-60 03, non turbo B5244S, has had check

Replace the cat you have ran it for years with a bad 02 sensor so now replace it and you will get better performance and better gas miliage. Never run a check engine light fo a long time it's telling you something is wrong. youer lucky you did not destroy the engine.

Posted on Jul 16, 2009

johnjohn2

Johnny Brown

  • 5763 Answers

SOURCE: My chevy express van 1500 cranks but wont start

test and see if you have spark and fuel preasure, you may have bad feul pump, common problem is the fuel pump goes bad, but check before replacing.

Posted on Oct 01, 2009

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