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I'm in desperation here. My volvo has been giving me driveability problems for quite some time now. It starts fine, idles okay, but sometimes when you try to pull away from a stop it stumbles severely and either it surges back to life or it bogs. This makes it very dangerous when pulling into an intersection, etc.
I've replaced just about everything on my '87 240 and it still isn't running right. Anything I haven't replaced, I've taken apart...such as the entire wiring harness. It has been totally ohmed out, and re-sheathed. No cracks anywhere.
"The List"
new:
FPR
Main pump
In-tank pump
Fuel relay
Fuel filter
Fuel check valve
Tune-up items (plugs, wires, ignition coil, O2 sensor, cap & rotor)
Hall sensor (found short at base of plug)
Rebuilt Ignition control unit (tested vacuum on diaphragm...no good)
Rebuilt AMM (No pulse with dwell meter)
Used AMM (get pulse with dwell meter, not sure if its right or not...pins 2 & 6 read 377 ohms)
Replaced intake gasket/throttle gasket
Checked vacuum leaks
Took apart Cold Idle bypass thing (checked good with 12V on each end)
Anyway, I'm sure there's more I'm missing...thats a start though. The only thing I can think of is either the fuel injectors/or seals and the AMM. I'm going to try and rig a fuel pressure gauge, and go ahead and order the injector seal kit. Any more advice would be greatly appreciated!
Jack H
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