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bad fuel mix or mix sensor......maybe the fuel pump.....it could also be spark plugs//.

My car did the same thing I replace the Fuel Pressure Regulator and now it starts in one crank. Its something like $80 brand new and is located on top of the motor to the right side. The fuel line plugs into it and is held in place by a blue lockin lactch thingy. you cant miss it. Good luck.

****FUEL PRESSURE REGULATOR*****

Period....dont waste any time or money diagnosing, its a very common problem. Just replace mine, part is around $200 from Volvo. Installation is literally 5 minutes, I did it myself in that or less.

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I have a 2002 Volvo S40, and it was taking longer than normal to start (cranked fine). I read the forums regarding changing the fuel pressure regulator and decided to try that (it's expensive $240 from Volvo, $199 from Carquest). I bought the part, from Volvo (10% discount coupon from parts department) and when I was replacing the fuel pressure regulator I noticed that the vacuum line that connected the regulator to the intake manifold was cracking and could have been the cause of the fault. Since I already had the part, I replaced the whole unit. But if I were to recommend to anyone else, I would change that vacuum line first to see if that corrects the problem. It is under a small black cover on the drivers side of the car near the front of the engine (2 screws)

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Q: Why is Volvo S40 hard to start It takes about 8 to 10 seconds before starting?
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