Hello all. My 2001 Volvo S60 2.4T 148,000 miles starts up fine in the winter and in the morning's in the summer. However, if its 85 degrees or above in the summer and the car is warmed up and I'm running errands, stopping and restarting the engine. The car will crank and sputter before it starts or it will not start. These are the dealers notes from last year: RPM signal not good. Checked for relevant codes none found. Tested fuel pressure it is OK. Found when problem exists the tach bounces and the RPM sensor signal is erratic. Needless to say I declined the extra $300 to pay for more diagnostics. When the problem reoccurred this year I took it to my local Volvo tech and they replaced the RPM sensor at the cost of $180 for parts and labor. That was a waste of money, because the problem persists! My question is, has anyone experienced this same problem and what was the solution? Thanks.

 

I have that exact same problem and I can't figure it out what the hell is happening!!. did you happen to solve it?

 

Has anyone had this problem?

 

Check your residual/rest pressure. If the fuel pump check valve is bad it will be harder to start when hot.

 

It doesn't have an electronic fuel pressure sensor (2001 volvo S60 T5 2300cc 250hp) but it is not a fuel pressure related. sometime starts just fine even it parked for 5 or 6 days (or even more).

 

You have to use a mechanical gauge to check fuel pressure.

When starting cold the ECU turns the "choke" on and sprays additional fuel.

 

is not a fuel pressure related! did you read the entire @manofsteel05 post?! when this happen there's no injector or spark plug signal.

 

Sorry not trying to **** you off, just offering suggestions.

 

I know and I appreciate any suggestion but believe me, is not a fuel related issue.