I just purchaced a 1992 Ford Ranger 2.3L manual 5 speed with 150k miles. It runs great but with one exception - whenever the I hit a large bump in the road (usually the front right side) the engine to cutsout momentarily. I have checked the obvious electrical connections but everything seems intact. Has anybody ever heard of this happening? At this point I'm not sure if its electrical or mechanical.

Thanks - any feed back would be appreciated.

 

fuel pump??

or something is really effed up? lol

 

Fuel pump my first thought as the electrical/battery indicator gauges stay stable during the cutoff. Don't really want to drop the tank unless I'm sure though. Could a pressure test confirm this?

 

i'd still check the grounds to make sure.

 

Inertia switch? This is a safety device that is supposed to trip and turn off the fuel pump after an impact like a collision. Sometimes an older switch may lose continuity intermittently without tripping and cause a variety of problems. The IS is up under the dash on the front of the passenger side footwell.

Definitely check all of the bolted grounds, large and small, especially in the engine compartment.

 

Wirelessly posted (Timberwolf)

Battery cable clamps could be loose? Poor contacts