I own a 1995, 850 turbo, 5-cylinder, grocery-getter Volvo with 247,000 miles on it that has been the best car I’ve ever owned. Problem: it takes 8 seconds for it to crank over when it’s warm. Starts right up when it’s cold. Mileage is starting to be affected. It has a new fuel pump and it isn’t the fuel relay switch or the starter. I’m in-between jobs like many people, and my mechanic says the engine compression is still good and it should last for another year which will help me financially so I must fix it. Does anyone have any possible solutions for me? Thanks so much for your help!
Could be a dirty MAF, mass airflow sensor.
If there is some black smoke out the tailpipe when you start the warm motor; the cold start circuit could be active all the time and it should not be active when the motor is warm. There are temp sensors to tell the car’s computer when the motor is warm.
If you have a decent mechanic this is the kind of stuff he should have checked out already, but offered to be of some help with your question. Another very simple check is the air filter, a dirty filter could cause this.
My online search says check the fuel pressure regulator.
“Check fuel pressure regulator.
Pull out vacuum line from regulator and see if there any gasoline inside . Broken diaphragm inside fuel pressure regulator.”
Might also check that vacuum line first? A Vacuum line may look good but the contact seat isn’t secure ? viola a vacuum leak. e.g. replace the hose first and see. Might just do a good look around at all the vacuum hoses, too.
Online part costs are from $65 to $104.00 (I don’t have any commission etc. Just the link will show you the part pic and prices.)