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ETA930 ETA930 is offline
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Join Date: Mar 2006
Location: Northern Illinois
Posts: 9
Intermittent stumble

I've owned this 87 930 for over 12 years now and it's never let me down... oil changes was basically all that it needed. Earlier this year while taking her out for a typical exercise run and it just quit, coil (Bosch) gave up the ghost, replaced it with a PDL 101-400 transistor ignition coil (Bosch 0221-122-001) and all was good.

Months later, the car has developed an intermittent stumble- losses power but doesn't kill as best as I can tell, (push the clutch in and it stills idling) but will backfire once.

Work done to mediate problem-
New plugs, cap rotor, 2 red fuel relays (all of which replaced the original ones still on the car)

Stumble will not occur every trip but sometimes happen within a 8-10 mile jaunt, after it has the hiccup it runs perfectly...

Any ideas guys?
Old 10-11-2017, 08:47 AM
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