1st limp home @ 4k miles

72chevy4x4

Active member
my van has hick-ups that only happen when letting off the fuel pedal, has happened since new. they almost always occur when slowing down or coming to a stop.

after one such occurrence last week it seemed to have jumped into limp home mode. The check engine light didn't light until after the next key cycle (tuned off IGN).

I tried pulling off the road twice to restart but it didn't help. A third time, turned it off for 10 mins while getting lunch, started it up and still in LHM.

Ten mins later got to the next stop and I pulled the electrical connection under the dash (by the fuel pedal). when I came back out 20mins later, the engine ran normally and the CEL was extinguished.

are others experience these hick-ups?

Any clue what's going on? I have an Autel MD808 that was used on my NCV3 with great success but haven't had good results from the VS30.
 

jjmcclure

2020 144P 4x4
Only thing that comes to mind is your DEF fluid level / quality. Note where your gauge is and then fill it up, preferably on tap at a truck stop, and then see if your gauge is working.
 

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