Starting problems hot weather 2001 S60

manofsteel05 · Post by **manofsteel05** » 17 Jun 2013, 16:46

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 pulled a code for the RPM sensor. I have the S60 booked in Friday to replace the RPM sensor at a cost of $180 for parts and labor. My question is, has anyone experienced this same problem and what was the solution? Thanks.

Post by **vtl** » 18 Jun 2013, 06:14

My 2005 XC70 does not like Gulf, every single time I buy gas (93) here I have problem with starting in hot weather. Mobil is ok.

manofsteel05 · Post by **manofsteel05** » 23 Jun 2013, 14:37

It doesn't appear to make a difference where I buy gas from, I still have the same problem. It's a temperature related problem. The engine starts fine in the winter, no problems in the morning either. I just wasted $180 having the RPM sensor repaired. Still the problem persists. I'm thinking maybe the MAF sensor needs replacing or the throttle body needs a good cleaning. Has anyone else experienced the same starting problems in summer?

draser · Post by **draser** » 23 Jun 2013, 16:46

I'd check the coolant temp sensor to make sure it changes resistance from high to low as engine warms up, and connector for corrosion. Any change in fuel consumption?