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confusing set of issues on a 244 200 1989

Hi Bob,

When you talk to the mechanic about the no-start

1) Deal with the CPS first. The LH 2.4 ECU won't activate the fuel pump relay without a CPS signal during cranking. That could easily be the entire problem. If you hadn't said the cable was damaged, I'd say to use the diagnostic test you can easily run at the OBD connector to verify a CPS signal (in the FAQ here)

2) Next step, listen under the car for the fuel pump to run for a second or two to prime fuel pressure when you switch the ignition on (KP-II) which will verify the fuel pump relay and pump work.

3) if it still won't sputter, remove the connector off the AMM (MAF to some mechanics) and attempt to restart in "limp home mode" which would indicate a cooked AMM.

Those are by far the three most common no-starts in that 240..After that, more serious diagnostics are needed to isolate the problem to the fuel or ignition side. Post back with the results for further guidance.from me and others.
--
Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now






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New 1 confusing set of issues on a 244 [200][1989]
posted by  muskox37  on Mon Feb 26 20:52 CST 2024 >


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