Bogging/lost of power at acceleration and then surging while idle
I have a 92 GMC sierra 4WD TBI V8
350 5.7 liter, I just put a brand new
crate 350 in it and about two weeks
after it was out of the shop my two
injectors washed out on my TBI since
they were replaced it has ran like
total crap, it will drive amazing for
about a full hour I have full power
sounds great doesn't miss or
anything then no power at all takes
me a life time to get to 55 mph it
slowly gets worst until the engine
dies it's not OVER HEATING, it start
right back up and surges between
2000 and 1000 rpm the after about 5
minutes of idle it perfect idles at 800
like it should and all power is
restored to my truck for about an
hour then process repeat, does
anyone have any ideas I've changed
Please help thanks
Yes,fuel pump relay,or fuel pump bad,check pressure on fuel.
Okay thank you, I'll try that and let you know what's up
Bad computer or ECM.
Looking for a Used Sierra 1500 in your area?
CarGurus has 61,964 nationwide Sierra 1500 listings starting at $1,295.
Search GMC Sierra 1500 Questions
GMC Sierra 1500 Experts
Related Models For Sale
Used Cars For Sale