Yep, cleaned old MAF w/ no change. Tried a new OEM MAF and no change. Today, she’s idling around 8% LTFT and about the same / maybe a little higher on the higway. She’s happy today.
In partsouq diagram lookup looks like it’s called a fuel vent hose, which makes sense to me since it runs to charcoal canister. Wondering if this old vent hose could cause a fuel starvation problem or a vac leak?
I did find what looks like a thicker vacuum line under the upper intake that looks original and crusty. Pretty disappointed b/c I paid a mechanic to pull intake about a year ago and he agreed to replace all the vacuum lines while under there. I’ll post a pic of the vac line- it runs off the...
Maybe…I had an OTRAMM exhaust system installed by a local independent shop about a year ago. They struggled with it. They installed a new Magnaflow y-pipe then installed the OTRAMM cat back system. It was hitting the frame in several spots. Long story short, I pulled the OTRAMM system off and...
Fuel trim question: I’ve got a 97 1FZFE. Set my Ultra Gauge to monitor fuel trims. Long term fuel trim is ALWAYS +8 to +11%. Short term fuel trim is always +/-5%, and typically less than +/-3%. If I had a vacuum issue, I’d suspect the LTFT would drop significantly when I hit the gas pedal...