Hi Everyone, new to the site, was referred by someone on my usual forums site. I've got a problem with my Grand Caravan. I just received it from the previous owners who gave up on attempting to find it's problem. Here's the specifics 1994, 3.3, 150,000, with fresh
plugs, wires, coil pack runs an Intrepid, crank sensor is still
magnetic and cleaned (but I don't know how to check it correctly), compression is 150 across the board, fuel
pressure is 50 cranking and running (if you can call it running), air
filter is new. Now the bad. Van cranks and fires right up, but
immediately dies (within a second or 2). If you pump the accelerator
it'll keep running for awhile, cycling up and down as you pump. Smells
flooded and dies as soon as you let off or if you hold it to the floor
or you get out of rhythm. I pulled up the rail with injectors still on
it and none of them leak and all seem to be firing as they should (to
the naked untrained eye) when you crank it over. There are no codes.
Everything else seems to be operating normally, all fuses and relays
are good. I'm hoping to try a new camshaft sensor tomorrow, and
hopefully find an engine computer at the bone yard. If neither of those
is the fix, I'm at a loss. The only other thing I could think of is the
timing chain slipping, but I figured it'd still run, just poorly or the
compression would be down. Anyone have any ideas or know how to check
the timing chain w/o disassembling the entire front of the engine?
Thank you very much for reading.
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Tonight I tried 2 different cam sensors and also unbolted the exhaust before the cat with no change in the situation. I also picked up a used PCM (engine computer) today also and will try swapping it in the morning.
1994 Caravan 3.3, starts and dies
