Question about 1992 Plymouth Laser

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It's a 92 Plymouth laser 1.8 none turbo, wont start when cold..will only idle. Once it gets some heat in it, it runs and starts fine. It threw 3 codes, volume Air Flow senor, intake air temperature sensor, and idle speed control motor. I checked or replaced all 3 and they are all fine. I tested fuel pressure before the filter and after the pressure regulator, it test fine...checked all vaccume lines and injectors and they are all fine..Any ideas? Thanks, Jim

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Hello! system dropped our chat... probe onto the Gray/White and - probe on the Gray/black...Meter set to read 5 volts...start engine...Meter must read less than 1 volt (.85)...Slowly increase throttle...Meter must read 4 volts at full throttle...Voltage must increase smoothly...If it jumps, jerks or acts erratic the TPS is defective....saailer

Posted on Sep 15, 2010

  • David Burbee
    David Burbee Sep 15, 2010

    Hello! I'm online until 9PM EDT... probe on the Gray/White and - probe on the Gray/Black...Start engine...Must read less than 1 volt (.85)...Increase throttle to full...Meter must read 4 volts...Smooth rise without jumping or erratic movement of voltage...If not TPS is defective...Switch the probe onto the Gray/Yellow wire...Must read 5 volts with key in the ON position...Saailer

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Firing order for 92 plymouth laser


For the 1992 Plymouth Laser:
I do not know if you have the 1.8L SOHC or 2.0L DOHC (or Turbo) In-Line 4-Cylinder Engine; however I have included both below.

For the 1.8L SOHC In-Line 4-Cylinder:
Firing Order:
1-3-4-2
Cylinders:
..........(back)...........
|...1....2....3....4...|
.........(front)
Distributor:
.....(back)
..(+)
..............1
2
.................3
...4
..............(+)
.....(front)

For the 2.0L DOHC (AND TURBO) In-Line 4-Cylinder
Firing Order:
1-3-4-2
Cylinders:
...........(back)..........
|...1....2....3....4...|
..........(front)
Ignition Connections:
(back)
...3
...2
...1
...4
(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

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Engine runs rough after about ten minutes /idles really low


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Hard to keep running when warm 92 eagle tsi


The INFAMOUS DSM Hot Start Problem

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2) Change your vaccum hoses, especially the one going to the fuel-pressure regulator. Sometimes this one leaks and creates problems for the FPR.

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