I've been searching and reading topics to try to pin point my problem and getting exhausted here. Basically over all my tbi 350 suburban started running like absolute garbage a few weeks ago. It sputters, hiccups, misses and ultimately runs bad.
Things that have been replaced in the last 2 years and it had a period where it sat for a few months and started driving it again for a few months no problem before it started causing trouble
New distributor
Cap wires and plugs (i've checked them out they look good)
Throttle body rebuilt by a local carb shop
All new sensors, map, tps, iac, egr solenoid, o2, water temp sensor
I've done a vacuum leak test on my egr valve and as well checked all my vacuum lines and a new pcv valve.
The fuel pump was replaced probably 6 years ago and fuel filter recently.
I've also timed 3 times and thats with the single wire on the firewall disconnected.
I may be missing something i've tried but worn out on ideas and searching for a problem!
Things that have been replaced in the last 2 years and it had a period where it sat for a few months and started driving it again for a few months no problem before it started causing trouble
New distributor
Cap wires and plugs (i've checked them out they look good)
Throttle body rebuilt by a local carb shop
All new sensors, map, tps, iac, egr solenoid, o2, water temp sensor
I've done a vacuum leak test on my egr valve and as well checked all my vacuum lines and a new pcv valve.
The fuel pump was replaced probably 6 years ago and fuel filter recently.
I've also timed 3 times and thats with the single wire on the firewall disconnected.
I may be missing something i've tried but worn out on ideas and searching for a problem!
Wow....
