Anyone have info on this TSB? (1996 B4000 STEADY SPEED STUMBLE AT HIGHWAY SPEEDS)

[waivej]

My truck doesn't like the highway anymore. At various speeds (55 on flat, 45 going up hill, almost never downhill) it runs rough. It's otherwise it's great and you'd never know something was faulty.

This TSB from Mazda seems to describe the issue very accurately. Does anyone have any more info? Thanks. John

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1995,1996 Mazda B4000
Electrical & Lights: ELECTRICAL SYSTEM:IGNITION:MODULE
Service Bulletin Number: 009/97
NHTSA Number: 52461
Model Years Affected: 1995
Date of Bulletin: 08/1997

Bulletin Summary: INTERMITTENT STEADY SPEED STUMBLE AT HIGHWAY SPEEDS (55 MPH AND ABOVE).
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[snoman6115]

my buddy ahd a problem like that on his 94 ranger and it was jsut teh maf. cleaned it off and she runs like a top

 

[waivej]

thanks!!

Thanks... I cleaned it off and she ran great in a quick test drive. I'll post again if the problem comes back.

There was a bit of dust in there and the MAF filaments looked clean. But driving did feel a lot better.