I have noticed a slight stumble at idle when I have come to stops over the last several months. It would happen every 10 seconds when idling for extended periods (stop lights, etc). Seemed like more of a hiccup if anything. Van has been running great besides that with no codes being thrown.?
Today I changed my oil and was letting van idle for an extended period and noticed that the idle was much rougher with the stumble much more frequent. Enough to throw misfire codes on all cylinders.?
Parts that are newer or I was able to swap for spares: plugs, wires, coil, O2 sensor, MAF sensor, knock sensor, injectors, fuel filter, and fuel pump. Tank is only a year or so old, was recently dropped and looked spotless.?
I had somewhat recent cleaned throttle body and IAC valve, but thought I would check they were still spotless. Smoked checked intake no apparent issues..?
1984 Westfalia with a 99 Legacy 2.2L motor installed using the RMW kit and Autoventures harness. Running a CV mounted VSS.?
Short video:?
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Looking for advice or ideas on where to possibly look next. Thanks in advance.?
-Will
