HI FROM MIDAS BELAIR MIDAS. 2003 VOLVO S40. EXCESSIVE CRANK TIME AFTER SITTING THE RUNS ROUGH FOR A MINUTE AND SMOKES, CLEARS UP QUICKLY. FUEL PREASURE 60 PSI AT IDLE. HAS FUEL IN VAC LINE TO REGULATOR. NO CODES,GOOD GAS. REGULATOR REPLACED IN 2004 FOR RECALL.
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If your airflow sensor (meter) is faulty then nothing in the fuel system will work as it should. This sensor tells the computer how much air is entering the engine so it can determine the fuel needed. It sets the amount of fuel by adjusting the length of time fuel is injected. So obviously your problem.
Volvo is a good car. if you maintain you volvo by changing the oil on time, maybe after every month according to how you drive and changing you fuel filter, using 93 grade fuel or 89. I advice you to keep your volve. do your oil change on time don't wait until three to five months before changing your oil and don't use poor fuel (87) grade. change your tranmission oil after 18 months then your volvo is yours for life.