Plymouth Acclaim - Popular Questions, Answers, Tips & Manuals

Question edited for clarity. Question moved to model category. There are some ideas here, but who is your mechanic swapping all these parts out? Is your antitheft light on, does it have one? The number 1 reason for no spark is that the antitheft system needs resetting or a sensor has failed. https://www.google.com/search?q=1991+plymouth+acclaim+no+spark A mobile auto electrician can connect a pro grade scan tool computer and diagnose in 30 minutes. https://www.google.com/search?q=mobile+auto+electrician+near+me ..

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Double check you have connected all wires to battery and that it is connected the correct way round

You have a faulty body ground either loose or corroded. Find every body ground you can and clean and tighten them all.

When pulleys are in alignment in both planes - check with a straight edge laid against the face of the pulley - the belt shouldn't come off. By alignment in both planes it means the pulley grooves should be exactly inline with each other and the shafts the pulleys are mounted on should be perfectly parallel with each other - in addition the belt grooves should be in good condition and each pulley should be round and unbuckled. In the old days it was necessary to adjust pulley alignment with shims and as many pulleys were pressed steel, a few were egg-shaped by small amounts and usually due to rough handling, some were like a buckled bicycle wheel. It is many years since those checks had to be made as part of building an engine though whenever a belt-related problem is encountered it is time to dust off the old methods. When the belt runs true it doesn't come off but there is another reason why a belt doesn't run true and that is belt chatter that is caused by a defective torsional vibration damper or crankshaft harmonic damper...

Vapor lock or scale, would be my guess.

when you press the brake pedal the brake master cylinder vacuum booster takes vacuum away from the engine and that slows the idle speed just enough to trigger the low pressure oil light. Pull the oil pressure sending unit out and hook up an oil pressure test gage, if the pressure is above 15 PSI hot engine idle in drive replace the oil pressure sending unit.

run the fault codes . indices that the ambient temp /baro sensors are not working and the ECm is not getting the signal to increase the fuel requirement ( same as pulling on the choke m)

you can buy a Haynes repair book in auto parts store also online at Haynes website...

NO ECM (engine control module). The skamatic does show PCM powertrain control module. Look under the hood, near the back of the motor. On the frame rail or the fire wall. Power Distribition center (PDC) should be ther as well. Repair Guides Wiring Diagrams Wiring Diagrams AutoZone com

You lost the ground to field the alternator It could e grounded threw the ECM. if so, cut the ground to the alternator and ground it to the engine. Older models, you can do this because the ECM only grounds it, does not regulate it. If Jason's diagram matches yours, Cut the DG/dark green wire and ground it.

Is the shifter lever all of the way into park?

I doubt it's a heater core. first look in the radiator and make sure your coolant is full. not just in the overflow bottle. a bad radiator cap may not allow coolant to refill the radiator . so the radiator can be low and you still have a full overflow bottle so refill everything and drive it a few miles and see if your heat comes back.

Code 12 is computer is in test mode or battery has been disconnected. Code 42 is a problem with the ASD relay circuit which could be the actual relay or something else. Code 55 is end of test.

Not fire ! battery voltage . What year ? Go to www.bbbind.com/ for free wiring diagrams an also go to you tube an check out some videos on fuel pump electrical circuits trouble shooting . How can we help you , you don't even supply us with the year .

I had an issue with my 98 Buick LeSabre it has a ground fuse in the driver side floorboard in the wire harness follow the harness from fuel pump to fuse box there should be at the fuse there it was wrapped in electrical tape

hook up scanner to ck codes, sounds like you might have a shift solenoid problem

there should be reverse light switches but it may activate through the TCM unit or light control module.

check battery connection also check the carb float or fuel level problem