Volvo Owners Club Forum - View Single Post - D5254T (to 2002, Audi)

alangorham · Oct 7th, 2008, 16:32

Hi

I'm having a similar but not identical problem with my 850...
I do get the engine cutting without warning, but on restarting the engine has less power and the engine check light is on. If I drive for long enough, then the light clears itself and the engine picks up power, but if I am on short start-stop journeys, then the engine will continue to falter and run rough with a bit of smoke from the exhaust and higher fuel consumption.

Like you, I have replaced the MAF sensor. I thought this had cleared the problem for about a month until I started doing short journeys again and the problem returned.

I also changed all vacuum hoses on the car and the PTC heater with no improvement.

I have had the codes read and two were returned P0715 and P0716 which are to do with input/turbine speed sensing being dodgy. Unfortunately the garage that read these codes for me did not know how to interpret them...

Hopefully someone else might chime in who has seen either of our problems and offer something else to try...

Oct 7th, 2008, 16:32	#2
alangorham Junior Member Last Online: Dec 12th, 2011 10:39 Join Date: Jul 2008 Location: Bedlington	Hi I'm having a similar but not identical problem with my 850... I do get the engine cutting without warning, but on restarting the engine has less power and the engine check light is on. If I drive for long enough, then the light clears itself and the engine picks up power, but if I am on short start-stop journeys, then the engine will continue to falter and run rough with a bit of smoke from the exhaust and higher fuel consumption. Like you, I have replaced the MAF sensor. I thought this had cleared the problem for about a month until I started doing short journeys again and the problem returned. I also changed all vacuum hoses on the car and the PTC heater with no improvement. I have had the codes read and two were returned P0715 and P0716 which are to do with input/turbine speed sensing being dodgy. Unfortunately the garage that read these codes for me did not know how to interpret them... Hopefully someone else might chime in who has seen either of our problems and offer something else to try...