jon_s_brady
Active Member
- Joined
- August 17, 2008
- Messages
- 69
- Reaction score
- 1
- Year, Model & Trim Level
- '05 XLT
I've been fighting issues since I re-built the engine. I've got an extremely rough idle and the engine will sometimes cut out if I have driven for a while and then stop and try and reverse into a parking spot.
I'm reviewing my PCM/PID data using Torque. I can't see any odd numbers except that the LTFT on Bank 1 is always much higher than Bank 2. It goes up to 20% on Bank 1 after it idles for a while and eventually starts the CEL flashing warning of catalytic converter damage.
The LTFT on Bank 1 appears to be vacuum related. At idle the LTFT is high (>15%) and will go down immediately I accelterate or move at speed. This leads me to conclude vacuum leak issues but I've checked all hoses, replaced the bolts holding the intake manifold to the heads as well as the gaskets. I've also replaced the EGR and done a propane test around the engine with no result.
So I'm wondering if anyone has encountered issues with the LTFT being radically different between banks on a V6 or V8.
I'm reviewing my PCM/PID data using Torque. I can't see any odd numbers except that the LTFT on Bank 1 is always much higher than Bank 2. It goes up to 20% on Bank 1 after it idles for a while and eventually starts the CEL flashing warning of catalytic converter damage.
The LTFT on Bank 1 appears to be vacuum related. At idle the LTFT is high (>15%) and will go down immediately I accelterate or move at speed. This leads me to conclude vacuum leak issues but I've checked all hoses, replaced the bolts holding the intake manifold to the heads as well as the gaskets. I've also replaced the EGR and done a propane test around the engine with no result.
So I'm wondering if anyone has encountered issues with the LTFT being radically different between banks on a V6 or V8.