SOURCE: distributor cap firing order
Your firing order is 1-3-4-2 The rotor in the dist cap rotates clockwise, cylinders are numbered 4 at front of engine, 3,2,1 at firewall.
SOURCE: My 1995 Plymouth Voyager loses power, surges and backfires.
My first instinct tells me timing chain or belt, but it could be a vacuum line loose, cracked or disconnected. Using a stethoscope, or a length of gasline hose held to your ear, and with the engine running, listen for a hissing sound. Be sure and wiggle all the hoses you can. You might make one hiss. If you don't find anything, get a timing light, and check your timing marks. They should stay in basically one spot. If it's jumping around a lot, you need a new timing chain or belt. Good luck.
SOURCE: Needed serpentine belt diagram for a 91 ply. voyager 3.3L engine
Here's a link to the diagram you need...
http://www.gates.com/common/part_locator/view_diagram.cfm?id=S7006
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SOURCE: my 1991 plymouth acclaim went dead and won't
I had the same problem with my 1991 Plymouth Acclaim 3.0 liter engine. Check to see if your SBEC (computer located next to car battery) has gone out. Replacing it should solve your problem.
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