Jumping truck
#1
Jumping truck
So I need a bit of help, my truck started jumping while driving is bad about 2 months ago and I've been working on it ever since. I replaced spark plugs spark plug cables and ignition coil, but tonight it started jumping again. It doesn't seem to matter what gear its in or how fast I'm going. But I have noticed that when it's cooler or I'm on a really bumpy road it gets worse. The only other thing I can think of is a fuel pump issue, but let me know if you have any suggestions
#2
#3
It's a 94 with a little over 130000. CEL does come on bit I'm not sure how to go about pulling a code off of it. And as far as surging, thay could be possible. When it happens I lose power from the pedal to the engine, as if it were just running but nothing behind it, and then a moment later it kicks back in
#4
Here's some info that may help you get some codes from your system... EEC IV Self Test hookup
eec iv self test hookup.pdf
Do the rpms stay the same, drop or do they go up when it seems like you lose power?
eec iv self test hookup.pdf
Do the rpms stay the same, drop or do they go up when it seems like you lose power?
#5
Here's some info that may help you get some codes from your system... EEC IV Self Test hookup
Attachment 215013
Do the rpms stay the same, drop or do they go up when it seems like you lose power?
Attachment 215013
Do the rpms stay the same, drop or do they go up when it seems like you lose power?
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