Montanaredneck406
TYF Newbie
- Joined
- Oct 9, 2024
- Posts
- 1
- Reaction score
- 0
Hey everyone, my name is Arron & I’ve got a 1996 Tahoe LS w/the 5.7 vortec (4x4)
. I can’t seem to figure out what the issue is. Hopefully y’all can help.
So a few months ago I started to notice that when I would step on it to pass on the hwy it would downshift but not really accelerate until I backed off the throttle a bit. A day or two after it started not firing right away when I’d try to start it in the morning but if I turn the key & let the fuel pump cycle 2 or 3 times it’d fire up the rest of the day right away. Few days later I was hauling a load of firewood and went to get into the throttle and it sounds like something was clogged up. erratic throttle response, loss of power & sounded like backfiring in the intake manifold. Next day I have to prime w/ a shot of gas into throttle body to get it to start, it’ll run somewhat ok for the first half mile then it’ll lose almost all power, bogging down hard & maxing out at maybe 50mph afterwards if I stop and put into park it will idle but die when I shift into gear. ( then I have to prime it again before it will fire). Also if I turn the hvac On it starts running even worse. So far I’ve replaced distributor cap & rotor with high performance setup. Did plugs, wires, air filter, fuel filter, TPS sensor, map sensor, ignition control module new alternator, removed catalytic converter & muffler (ran straight pipes with glass oaksthat dump out right before back tires) none of these have worked. I just romved spider injectors to inspect all lines, none had any holes or cracks. No visible damage to unit or lines. Put intake manifold back on& now it won’t start unless I prime it and won’t stay running after for more than a few seconds. Can hear Fuel pump kick on and ive me got pressure in the line. If anyone can give me the slightest clue please let me know! Thanks in advance
-Arron
. I can’t seem to figure out what the issue is. Hopefully y’all can help.
So a few months ago I started to notice that when I would step on it to pass on the hwy it would downshift but not really accelerate until I backed off the throttle a bit. A day or two after it started not firing right away when I’d try to start it in the morning but if I turn the key & let the fuel pump cycle 2 or 3 times it’d fire up the rest of the day right away. Few days later I was hauling a load of firewood and went to get into the throttle and it sounds like something was clogged up. erratic throttle response, loss of power & sounded like backfiring in the intake manifold. Next day I have to prime w/ a shot of gas into throttle body to get it to start, it’ll run somewhat ok for the first half mile then it’ll lose almost all power, bogging down hard & maxing out at maybe 50mph afterwards if I stop and put into park it will idle but die when I shift into gear. ( then I have to prime it again before it will fire). Also if I turn the hvac On it starts running even worse. So far I’ve replaced distributor cap & rotor with high performance setup. Did plugs, wires, air filter, fuel filter, TPS sensor, map sensor, ignition control module new alternator, removed catalytic converter & muffler (ran straight pipes with glass oaksthat dump out right before back tires) none of these have worked. I just romved spider injectors to inspect all lines, none had any holes or cracks. No visible damage to unit or lines. Put intake manifold back on& now it won’t start unless I prime it and won’t stay running after for more than a few seconds. Can hear Fuel pump kick on and ive me got pressure in the line. If anyone can give me the slightest clue please let me know! Thanks in advance
-Arron
