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98 suburban k1500 sputters when shifting and torque converter problems

most of the time 1-2 is ok, if i apply any pedal while it is shifting, it shifts hard and there is hardly any sputter. the 2-3 shift is when you can really hear the sputter, it almost sounds like the engine falls on its face for just a split second. then after it changes gears it feels like it...
- james28909
- Thread
- Nov 2, 2021
- Replies: 10
- Forum: Engine Performance + Maintenance
J
98 5.7 chevy suburban k1500 weird hissing from intake area and fuel pump runs constantly

cross posted on ls1tech this is a first for me so i hope someone here knows what is going on. i recent bent a valve in my suburban and i just got it all put back together. new head gaskets, intake gaskets (felpro premium intake gaskets) etc. after trying to prime the motor with spark plugs out...
- james28909
- Thread
- Oct 23, 2021
- Replies: 12
- Forum: Engine Performance + Maintenance