WindsorLife
New Member
- Joined
- August 9, 2021
- Messages
- 3
- Reaction score
- 0
- City, State
- Houston
- Year, Model & Trim Level
- 1993 Ford F-250 XLT, 351W
1991 Ford Explorer XL (mileage exempt).
Alrighty so here is the gist of my problem, when I bought the car the engine was trash, so I had my mechanic install a new motor in her, however he transferred and used all the old electric parts. To the new/used 100,000 mile engine (keep in mind that was the best that could be found in our area, the old engine was suffering horrific rod knock that the original owner drove for well over 80,000 miles).
Alrighty, whenever I turn on the vehicle she fires right up, however whenever I turn the AC on she chugs, her idle starts coming in waves, and you can visibly hear and feel the engine shaking excessively when in D and R when first moving, however with AC off she idles rather smoothly (although I do suspect one of the cylinders is misfiring). This and the fact it is only getting 10MPG and running extremely rich (with ac on or off). She is getting no O2 codes. So yesterday I installed a new ignition coil, and IAC valve. This actually did smoothen out the idle, but only when the AC is off. The main thing that is killing me is the gas mileage, I bought this car to be my economy car for my wife, my 93 F250 gets 9.5mpg on average.
I have 6 remanufactured fuel injectors on hand, as well as 6 new spark plugs, and a fuel pressure regulator (I have already installed 6 new spark plugs prior when getting the car). I am going to check for spark on each plug when I get home as well as the gap to see if there was a error on my end. (she has new wires). I am really trying to avoid pulling the throttle body off to get to the plugs. Part of me wonders if its a dying o2 sensor that hasn't been picked up yet. You can smell the gas coming from the exhaust. Another part of me wonders if I have a fuel injector or 2 stuck open. When my mechanic was switching my engine the new/old engine (it came from lkq pick and pull) it was running very rough, he discovered the engine had worn out fuel injectors so switched my old ones over to save me a dime (my decision which I am regretting now).
So I feel I am stuck on my course of action right now, and was curious if any of you have experience this before, and or know how to possible fix/find a solution for this.
Other than this the car is wonderful, beautiful red interior, clean, well kept on the inside, except for the arm wrest which have fallen apart, but not from neglect.
Thanks to any who can help in advance!!
Alrighty so here is the gist of my problem, when I bought the car the engine was trash, so I had my mechanic install a new motor in her, however he transferred and used all the old electric parts. To the new/used 100,000 mile engine (keep in mind that was the best that could be found in our area, the old engine was suffering horrific rod knock that the original owner drove for well over 80,000 miles).
Alrighty, whenever I turn on the vehicle she fires right up, however whenever I turn the AC on she chugs, her idle starts coming in waves, and you can visibly hear and feel the engine shaking excessively when in D and R when first moving, however with AC off she idles rather smoothly (although I do suspect one of the cylinders is misfiring). This and the fact it is only getting 10MPG and running extremely rich (with ac on or off). She is getting no O2 codes. So yesterday I installed a new ignition coil, and IAC valve. This actually did smoothen out the idle, but only when the AC is off. The main thing that is killing me is the gas mileage, I bought this car to be my economy car for my wife, my 93 F250 gets 9.5mpg on average.
I have 6 remanufactured fuel injectors on hand, as well as 6 new spark plugs, and a fuel pressure regulator (I have already installed 6 new spark plugs prior when getting the car). I am going to check for spark on each plug when I get home as well as the gap to see if there was a error on my end. (she has new wires). I am really trying to avoid pulling the throttle body off to get to the plugs. Part of me wonders if its a dying o2 sensor that hasn't been picked up yet. You can smell the gas coming from the exhaust. Another part of me wonders if I have a fuel injector or 2 stuck open. When my mechanic was switching my engine the new/old engine (it came from lkq pick and pull) it was running very rough, he discovered the engine had worn out fuel injectors so switched my old ones over to save me a dime (my decision which I am regretting now).
So I feel I am stuck on my course of action right now, and was curious if any of you have experience this before, and or know how to possible fix/find a solution for this.
Other than this the car is wonderful, beautiful red interior, clean, well kept on the inside, except for the arm wrest which have fallen apart, but not from neglect.
Thanks to any who can help in advance!!