Ran a half of a tank of gas with 500mL of liqui moly pro-line gas system cleaner, still got 3/8 of a tank left to burn through, starts up easily most times now, still down on power somewhat. hope that improves

Got some bad fuel, of course it was15 gallons worth of the bad stuff, very hard to start, pulled the fuel filter and yellow orange fuel came out (no diesel smell) that seemed to almost want to bead like water. Installed new filter, burnt most of the remaining fuel out of the tank, Its now been ...

adjusted neutral safety switch assembly, adjusted cable. took for a test drive got about 100 yards and tranny went away, no foward, no reverse, no park. turn off key, and immediately restart and park is restored, reverse works, and drive works for about for a while. part shown by FirstV70volvo is ...

I am thinking its an electrical or brain issue. It will act up, turn off the key, and start again and it will go away. 10-15 minutes later it will do the same thing. Cleaned the moldex harness plugs with contact cleaner yesterday but no improvement. It did show a communication fault with the ...

Where is the internal filter located, and can it be accessed?
Shifter goes into park, doesn't always engage

Just drove it about 10-15 miles, a few non shift issues getting it warmed up. manually selected from1 to 5 to get it up to 60 mph speed for about 2 miles, once or twice in D for auto shift, turned around and repeat, so about 25 or more shift cycles of up shifts, seems to downshift hard while braking ...

update flushed ATF with 10.5 quarts, ATF was pretty brown from PO bought car in may, should have changed all fluids but i was busy and it appeared to be in good shape. PO appeared to be pretty meticulous about maintenance (except maybe ATF) with a well equipped detached shop . In trunk were a half ...

Thanks all, have 12 quarts of 3309 ordered to flush. i assume the solenoid valves are electrically operated. Will probably check/clean the electrical connections when i locate it, may add a dedicated ground wire if it doesn't already have one.

ordered another 12 quarts of 3309 for my 2006 xc70.

2009 S60 transmission issues, 140K miles - Car automatic transmission started acting up intermittently, symptoms slips wildly between gears, engine revs like its in neutral, fluid level OK. when it acts up the car will roll easily in "Park" shifter position. Linkage looks OK. Occurs when engine is ...