Momentary jerk/miss/shudder at highway speed [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Momentary jerk/miss/shudder at highway speed


mgray1982
03-23-2010, 05:11 PM
Noticed this a couple times now in the last month, very brief tho. Cruising down the highway at 95kmh/60mph and there is a quick jerk/miss/shudder then all is back to normal. I almost think I'm taking my foot off the pedal then putting it back on quickly...but I'm pretty sure I'm not.

Just looking for ideas on where to start looking for a potential problem.

Thanks

JMJNet
03-23-2010, 09:13 PM
Suspension?

chefmike
03-23-2010, 09:15 PM
elaborate... I can feel the same thing on occasion with mine, but I have figured it was in the fuel system. I just moved the pmd from the intake to the bumper...

what in the suspension should I look at??

ice man
03-24-2010, 12:26 AM
fishbyte??

lost with out spark plugs
03-24-2010, 12:29 AM
Mine has done that when the lift pump was dead but I was way into the throttle.

abm
03-26-2010, 06:42 PM
Mine has always done that although usually it happens just after I get onto the highway and am climbing a slight grade. Once it gets it out of its system it often won't do it again for the rest of the trip. It may have something to do with the state of charge of the batteries.

Bruce

69800
03-26-2010, 07:19 PM
If the jerk is very quick on/off that is what my pmd felt like when it started to fail.