87 v1500 Tbi runs then dies

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BurbanPena

Member
Joined
Jan 20, 2022
Posts
44
Reaction score
51
Location
Idaho
First Name
Brian
Truck Year
1989
Truck Model
V1500
Engine Size
350
hey guys i have a 87 suburban with tbi it runs really good starts right up no matter how hot or cold the engine is however it randomly shuts off with no faults and it is very random it can go for 5 min with no problems then die and it will start right up every time

new intake manifold gasket
rebuilt TBI used the same injectors
new fuel pump
new TPS
New idle air control valve
new distributor and coil
replaced ground for ignition control module
new wire for knock sensor
new plugs and wires
timing set 0 with timing plug disconnected
new temp sensors
new map sensor
it does hesitate under heavy acceleration i just bought the truck 30 minutes ago and this was everything the previous owner replaced with proof of receipts anyone seen this issue before ?
 

fast 99

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Dec 31, 2021
Posts
1,589
Reaction score
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Location
Spokane, Washington
First Name
Brian
Truck Year
81,85
Truck Model
K20
Engine Size
350
Have seen the leads to coil ground out on air cleaner housing, check insulation for pull back.
 

Olegmbuilder

Junior Member
Joined
Oct 26, 2023
Posts
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Reaction score
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Location
Denver,colo
First Name
Esteve
Truck Year
1987
Truck Model
k5
Engine Size
350
It sounds like a grounding out issue. I had the same problem. I had to replace my fuel injector connectors they had become old and brittle and where arching under load. And the rule of thumb if you replace parts please use ACDelco I found off brands cause problems. More pricey but worth it. Hope this helps
 

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