Need help with ignition problem

[k3eaxk3eax]

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1991, 2.3/manual

Engine suddenly started to run roughly. My timing light indicated no advance as the engine was revved,

Two digit codes and explanations from Ranger Station page with KOEO as follows:

14 --Ignition pickup erratic

18 Ignition tach signal erratic

88 Ignition---IDM, DPI or spout circuit fault

If you've worked through a similar problem, please share your experience.

Methinks the problem lies in the crank sensor circuit or in the ignition module circuit. I don't want to start "throwing parts at the problem". And so would like to eliminate the problem's source as being elsewhere.

Comments welcome ---HELP!

 

[dorman68]

I have seen coil packs contribute to this problem.

 

[modelageek]

--------------------------------------------------------------------------------

1991, 2.3/manual

Engine suddenly started to run roughly. My timing light indicated no advance as the engine was revved,

Two digit codes and explanations from Ranger Station page with KOEO as follows:

14 --Ignition pickup erratic

18 Ignition tach signal erratic

88 Ignition---IDM, DPI or spout circuit fault

If you've worked through a similar problem, please share your experience.

Methinks the problem lies in the crank sensor circuit or in the ignition module circuit. I don't want to start "throwing parts at the problem". And so would like to eliminate the problem's source as being elsewhere.

Comments welcome ---HELP!

did you read this http://www.therangerstation.com/tech_library/TFI_Diagnostic.html

 

[k3eaxk3eax]

Yeas John, I actually wrote it. I thought to cross-post the message on this forum and the general forum.

I solved the problem by replacing the ignition module. The use of my timing-light indicated that there was no advance when the engine when revved. And so based on this evidence and the trouble-codes , I went ahead and replaced the module. The truck runs fine now. The "old" module lasted for about 100K miles.

Al