Volvo AWD 850 Forum

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PLEASE HELP SPUTTERING ENGINE ONCE WARM...... 850

I have been having problem with my 850 after she warms up she starts to sputter and runs like crap. I have replaced the fuel filter, spark plugs, distibutor cap and rotor, changed oil and oil filter. I have check all the vacum hoses and I have no code on the diagnostic unit. I have added a little more premium fuel and this has made no difference whatsoever. I do not know what else is could be. I am not impressed I have only had this car for 2 months and I hope this isn't a sign of things to come. Any advice you guys could give me would be great.








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PLEASE HELP SPUTTERING ENGINE ONCE WARM...... 850

You might want to remove the vacuum hose from the fuel pressure regulator (on fuel rail), engine warm, ignition off and see if gas is dripping into the vacuum line (bad FPR diaphram). Usually when those go bad, it'll also start very hard (flooded) as well.
Otherwise, I'd next check fuel pressure, fault codes.







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