BigBackHoe
TYF Newbie
- Joined
- Mar 29, 2025
- Posts
- 12
- Reaction score
- 15
First time in the forum, not necessarily my first time tryna get information for a vehicle and poke at the brains of
individuals that love these trucks.
I have an 02 Tahoe
5.3 Flex fuel, 11:1 comp, BTR Cam, Summit Rebuilt 4l60E 4x4
Lifted on 33's, swapped to 07 calipers.
I have a current issue I need to solve, Which I believe may be throttle body/IAC related and another issue as well.
1st Idle surges a bit when the trucks sitting, Then under load even light load it began as a simple stumble, then became an issue of it getting locked in Id say 1st gear and stumbling to go as it would seemingly drop idle then seem like it had no throttle response and surge up and then lose throttle and stumble in and out of even light loud. So as I said I believe it may be Throttle body/IAC related but issue 2 gives me a bit of a run around.
2nd P0200 Injector circuit open No other codes present, car surges initially i assumed ok Injectors have reached the end of their life span, Replaced them and within a day it went from idling better to having the stumble and surging issue, now they could be completely unrelated and be a coincidence because it doesn't smell like its running as rich and have an overbearing fuel smell. And seemed to idle a bit smoother.
I was thinking I may be having fuel pump issues, even though its recently replaced I was getting near 37 psi at the rail when it began to do the surging of throttle as it was driving and losing throttle then surging but it was not changing the pressure when the surge came, I have not done the filter on it yet it has 96k on it so could be due, but doesn't seem like the issue oddly, because when i unplugged the FPR the pressure rose but only to 50, Im thinking I need more pressure at the rail for sure but will retest the pressure before the filter to confirm my suspicions.
ANY IDEAS ARE WELCOME, I will actually come back to this thread to post the FIX instead of leaving a dead end thread.
individuals that love these trucks.
I have an 02 Tahoe
5.3 Flex fuel, 11:1 comp, BTR Cam, Summit Rebuilt 4l60E 4x4
Lifted on 33's, swapped to 07 calipers.
I have a current issue I need to solve, Which I believe may be throttle body/IAC related and another issue as well.
1st Idle surges a bit when the trucks sitting, Then under load even light load it began as a simple stumble, then became an issue of it getting locked in Id say 1st gear and stumbling to go as it would seemingly drop idle then seem like it had no throttle response and surge up and then lose throttle and stumble in and out of even light loud. So as I said I believe it may be Throttle body/IAC related but issue 2 gives me a bit of a run around.
2nd P0200 Injector circuit open No other codes present, car surges initially i assumed ok Injectors have reached the end of their life span, Replaced them and within a day it went from idling better to having the stumble and surging issue, now they could be completely unrelated and be a coincidence because it doesn't smell like its running as rich and have an overbearing fuel smell. And seemed to idle a bit smoother.
I was thinking I may be having fuel pump issues, even though its recently replaced I was getting near 37 psi at the rail when it began to do the surging of throttle as it was driving and losing throttle then surging but it was not changing the pressure when the surge came, I have not done the filter on it yet it has 96k on it so could be due, but doesn't seem like the issue oddly, because when i unplugged the FPR the pressure rose but only to 50, Im thinking I need more pressure at the rail for sure but will retest the pressure before the filter to confirm my suspicions.
ANY IDEAS ARE WELCOME, I will actually come back to this thread to post the FIX instead of leaving a dead end thread.
