miss/stumble @ or below 1400 RPM | Ford Explorer Forums

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miss/stumble @ or below 1400 RPM

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yosh18981898

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October 17, 2003
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City, State
Chana IL
Year, Model & Trim Level
92 sport 4x4
Yeah the title says it all.

1992 5-spd 4x4 sport. 117,000 miles

Runs excellent once I get past 1400. It has a homemade high-flow intake (completely leak proof) and flow master exhaust with high flow cat connected to the y-pipe by a reducer made by me (also leak proof). It's got a somewhat erratic, although smooth, idle (much like a mild performance cam).

I have done:

1) Changed spark plugs
2) Tested wires to be good (replaced 9 months ago)
3) Run SeaFoam through the intake
4) Cleaned MAF
5) Scanned computer and got nothing on both KOEO and KOER tests.

The secondary resistance on my ignition coil is a bit out of range, they measure about 14,000 ohms while the Hayne's manual specifies 5,000-11,000 ohms. Could this be it?

Could it be fuel related?

Please post any ideas
 






C'mon somebody has to have an idea...

No replies here so I am going to post this in the "Under the hood and driveline" troubleshooting forum...
 






Thread closed.. Dupe thread with info in under hood forum

~Mark
 






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