TRUCK STALLS IN GEAR AS SOON AS THROTTLE IS GIVEN

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COREY TREVOR

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Jul 4, 2020
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Location
NEW ENGLAND
First Name
COREY
Truck Year
1976
Truck Model
K20
Engine Size
350 TBI
TRUCK STARTS & IDLES FINE , I CAN REV THE ENGINE ALL I WANT IN PARK. WHEN PUT IN TO GEAR THE TRUCK WILL NOT ROLL , & WILL STALL AS SOON AS THROTTLE IS GIVEN . ENGINE IS 94 TBI 350 SMALL BLOCK OUT OF A 94 CHEVY VAN , TRANNY IS A TH400 , TRUCK IS A 76 K20 . COULD ANY BODY HELP ? THANK YOU .
 

75Monza

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Colville, Washington
First Name
Jeremy
Truck Year
1980, 1982, 1985
Truck Model
K30, K20, K20
Engine Size
454, 383, 350
Had similar issue with a 90 TBI that I have, messed with a bunch of stuff till found that fuel pump didn't have enough pressure. Could be others too, but would start with a pressure test on the pump.
 

Vbb199

B-rate Hillbilly Customs
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Salisbury NC
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Vince
Truck Year
89, 79
Truck Model
89 Suburban R1500, 79 C10
Engine Size
350, 502
9 psi at the lowest, 13 the best.
 

75Monza

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May 5, 2017
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Location
Colville, Washington
First Name
Jeremy
Truck Year
1980, 1982, 1985
Truck Model
K30, K20, K20
Engine Size
454, 383, 350
The list of things I went over...fuel pressure regulator, spring can fail; swapped the computer just for kicks, not it; the injectors had odd spray, so swapped another throttle body in, not it; fuel filter, not it; finally the pressure test on the pump...would flow great until you load it, then barely had 5 psi. Replaced it and worked.
 

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