86 gmc Sierra bogging no response

[martingmc86]

so my truck started with this issue when cruising at normal speed and flooring it it just bogs down doesn't die tho. if you stop at a stop sign floor it it only bogs down no response. About 1 month ago CEL was on i replaced the TPS (Acdelco) was working very good then i left the truck parked for 1 week now with this issue the truck idles really good if you rev hard there no issue I've replaced the fuel pump since i had low pressure haven't checked since then i also replaced the distributor cap and rotor since the brush was Broken please help

 

[fast 99]

Fuel, was the pump Delco, AC or Delphi? Check it again.

 

[martingmc86]

Fuel, was the pump Delco, AC or Delphi? Check it again.

Fuel pressure is 6psi with new pump

 

[Radiohead]

Good volume?

 

[c10dang]

so my truck started with this issue when cruising at normal speed and flooring it it just bogs down doesn't die tho. if you stop at a stop sign floor it it only bogs down no response. About 1 month ago CEL was on i replaced the TPS (Acdelco) was working very good then i left the truck parked for 1 week now with this issue the truck idles really good if you rev hard there no issue I've replaced the fuel pump since i had low pressure haven't checked since then i also replaced the distributor cap and rotor since the brush was Broken please help

did you ever figure this out?

 

[goldpack]

did you ever figure this out?

you got a real old thread here. from a member that has not signed in for a year.

I would suggest you start a new thread. and list what you got for equipment: what carb by its markings / #s, what fuel pump.
..40 years old things can get swapped, with stuff that does not belong,..is not set right,...all gummed up with varnish.

and at least in a 1986 variety, ... lots of paths for trouble vehicle Electrical, fuel flow, carb workings, carb with its own electrical,

 

[Ricko1966]

did you ever figure this out?

When you create your own thread. State whether anything has been deviated from stock and make sure everyone knows it's California spec. California is different. Different,carb,ignition,and has a controller for the carb and ignition. The rest of the US does not in 86.