notaprob
Member
- Joined
- Jul 26, 2012
- Messages
- 61
- Reaction score
- 0
- Points
- 6
- Location
- Wilmington, N.C.
- Vehicle Year
- 1994
- Make / Model
- Ford
- Engine Size
- 4.0
- Transmission
- Manual
hey! I have been reading on here for the past couple of years and figuring out issues with my truck. This is the first time that I have been stumped and I would like to get my problem resolved before school starts.
I have a 1994 4.0 4x4 5 speed ranger. My friend said it was a push rod and not SOHC. Here is what it does. It starts fine, idles fine(most of the time), and when I go to dive it, sometimes it will take off like normal and then start to miss. Whenever it starts acting up the check engine light comes on, engine boggs down and the tach goes crazy. The tach falls to zero and bounces around and sometimes it backfires but then all of a sudden the engine will jerk kind of hard and it will run fine and the tach will read correct and the check engine light will go away. It acts up at any rpm and at any temperature.
The things I have done to it is:
-replaced spark plugs and wires
-ohm-ed out the coil pack (read the same as a new one)
-cleaned MAF
-replaced TPS
-checked vacuum lines(plugged off the ends and put a vacuum tester on it)
-replaced crank shaft sensor
-oil level is full
-timing is -10
Does my engine have a cam shaft sensor?
Could it be the computer or module for the coil pack?
Do you think it is an ignition problem? Maybe fuel problem?
After all of that I still had no luck so I took it to a mechanic that was recommended to diagnose problems. He had it for 2 days and he said my tach had a short and that he fixed it, and then he said it runs bad because it has a blown head gasket. But how can I have a blown head gasket if i don`t have water and oil mixing, not overheating, and all of the cylinders have the same compression and no smoke coming out of the tail pipe? And the tachometer still does what it had been doing (not fixed)....Sorry for the rant! I just had to throw that in there. Your advice/suggestions will be greatly appreciated!!
I have a 1994 4.0 4x4 5 speed ranger. My friend said it was a push rod and not SOHC. Here is what it does. It starts fine, idles fine(most of the time), and when I go to dive it, sometimes it will take off like normal and then start to miss. Whenever it starts acting up the check engine light comes on, engine boggs down and the tach goes crazy. The tach falls to zero and bounces around and sometimes it backfires but then all of a sudden the engine will jerk kind of hard and it will run fine and the tach will read correct and the check engine light will go away. It acts up at any rpm and at any temperature.
The things I have done to it is:
-replaced spark plugs and wires
-ohm-ed out the coil pack (read the same as a new one)
-cleaned MAF
-replaced TPS
-checked vacuum lines(plugged off the ends and put a vacuum tester on it)
-replaced crank shaft sensor
-oil level is full
-timing is -10
Does my engine have a cam shaft sensor?
Could it be the computer or module for the coil pack?
Do you think it is an ignition problem? Maybe fuel problem?
After all of that I still had no luck so I took it to a mechanic that was recommended to diagnose problems. He had it for 2 days and he said my tach had a short and that he fixed it, and then he said it runs bad because it has a blown head gasket. But how can I have a blown head gasket if i don`t have water and oil mixing, not overheating, and all of the cylinders have the same compression and no smoke coming out of the tail pipe? And the tachometer still does what it had been doing (not fixed)....Sorry for the rant! I just had to throw that in there. Your advice/suggestions will be greatly appreciated!!
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