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Interesting fix for no start 850 1994

Last weekend for the first time since I purchased the car (6 years - 60k+ miles ago) it wouldn't start. The engine cranked easily so I pulled the ignition wire from the coil and confirmed a strong spark. The fuel pump was running in key position II.

I tried several times to no avail, it wouldn't even fire. The engine seemed to crank faster than usual, and no codes came up. Idle motor was running, fuel pump relay checked out ok, fuses were good. I had moved it a few feet in the driveway earlier in the day with no issue. I also moved it a few feet in the driveway a few times the previous day with no issue.... This is something I usually don't do, but was visiting relatives and it was a game of musical cars in the driveway.

After a few more frustrated attempts I decided to look online for answers. Someone had mentioned a similar issue after moving the car a short distance (less than 30sec run time) and suggested an interesting fix. The suggestion was to crank the engine with the accelerator pedal to the floor for as long as it takes (one minute plus if needed). Skeptical but willing to try anything so that I could drive 60 miles back home that night instead of riding in a tow truck I gave it a shot. To my surprise after about 45 seconds the engine screamed to life and revved up to 4000rpm. A huge cloud of black smoke came from the tailpipe and after running a few seconds it settled into a regular idle. The engine ran as smoothly as ever, and after about 5 shutdown and restarts I was confident it was good to go.

A quick trip to the gas station and I was on the highway, no issues since.


1994 850 Turbo Wagon / 203k

--
Zack Silver 83' 242Ti (230k)








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    Interesting fix for no start 850 1994

    The nickname for it is - lawnmower syndrome - you move your Volvo to get the mower out, then your car won't start

    I have seen numerous posts about it.

    If you took your car to a dealer, they would change your spark plugs, oil, and filter. Just to make sure your oil is not full of fuel.

    Rule of thumb - never start your 5 cylinder unless you intend to warm it up.

    I have heard a few theories about its cause.

    My own theory - the only thing in the engine that gets hot during a short run is the exhaust valves - they stick in their guides limiting compression = no start and cranking a bit faster.
    --
    '96 855R,'64 PV544 driver, '67 P1800 basket case, '72 Yamaha Rd400, '68 Honda 350-4, '12 XC70, the first 5 are mine, heh, heh, 525,000 miles put on 10 bricks James A Sousa








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    Lawn mower syndrome 850 1994

    That is the 'official' term. The gasoline from the cold starts washed the oil from the cylinders and you wound up with zero compression. Foot on the floor tells the ECU to turn off the gasoline flow (engine flooded condition) and the cranking caused oil pressure to build and spray oil on the rings and zooooom.

    good searching.
    --
    My name is Klaus and I am a V♂lv♂holic







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