1985 Ford Ranger stalls, dies at stop sign

EDCHAPMAN5

MEMBER
1985 FORD RANGER
6 CYL
4WD
MANUAL
50,000 MILES

This truck runs good, idles fine but often dies at stop sign. I recently rebuilt the carb, new fuel pump, new egr valve. 2.8l engine. KOEO codes 23, 31, 84, 87 Contninous memory codes 14, 18. Any suggestons on keeping the engine from dying when I stop?

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Ford CODE 18 : IDM circuit failure or SPOUT circuit grounded. The computer sends out a timing advance correction to the ICM over the SPOUT wire.
IDM - Ignition Diagnostic Monitor. Check the ECT or the IAT sensor for your problem. Also, check the SPOUT/IDM wire going to ground making sure it isn't damaged.

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Tuesday, November 2nd, 2010 AT 7:19 AM

EDCHAPMAN5

MEMBER
2 POSTS

You mentioned the sensors below: I do not know what these are, and do not find them in my chilton's manual. Can you explain more?

ECT or the IAT sensor

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Tuesday, November 2nd, 2010 AT 2:33 PM

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

I would be happy to. The IAT is the Intake Air Temperature sensor and the ECT is the Engine Coolant temp sensor. Both of these sensors determine how rich or lean the air fuel mixture needs to be based on engine temp and ambient temperatures. If either one tells the computer the wrong temp, it can cause too rich / lean mixture and an engine stall.

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Tuesday, November 2nd, 2010 AT 8:00 PM