Welcome Visitor! Please take a few seconds and SolidSnake84
New Member
- Joined
- Sep 5, 2008
- Messages
- 38
- Reaction score
- 1
- Points
- 0
- Location
- Stephens City, VA
- Vehicle Year
- 2006
- Make / Model
- Ford
- Transmission
- Manual
Hi folks,
My wife's 1998 Explorer 4.0 SOHC, 4X4, just hit 170,000 miles a few weeks ago, all was well up until that point. The engine runs smooth, has no motor noises at all. Still plenty of power, and it doesn't leak oil or use any fluids. Now that cold weather has arrived, it seems it has developed some issues until the engine warms up:
Rough idle when cold - motor starts up, revs up to about 2,000 RPM, then stumbles, motor bucks and shakes below 800 RPM, and has a surging idle. This will go away in a few minutes as the engine gets warmer.
Cannot accelerate beyond 35 mph - even with pedal floored, the motor has no power and cannot get beyond 35 mph. The engine is not revving high, but quite the contrary - you cannot get the RPMs past about 1,800. But be ready, with the pedal on the floor, when the motor finally "catches", it will chirp the tires and throw you back into the seat from the sudden acceleration.
No codes from the engine during any of this. I verified that the check engine light does work, its just not throwing codes. Here is what I have replaced so far:
Plugs & Wires (Motorcraft)
MAF Sensor (Motor Craft)
IAC Valve (Napa)
Throttle Position Sensor
Camshaft Position Sensor
Friends are telling me I need a new EGR Valve - one guy says his explorer did the same thing and it ended up being the engine ?!?!
What do the "experts" on here think??
My wife's 1998 Explorer 4.0 SOHC, 4X4, just hit 170,000 miles a few weeks ago, all was well up until that point. The engine runs smooth, has no motor noises at all. Still plenty of power, and it doesn't leak oil or use any fluids. Now that cold weather has arrived, it seems it has developed some issues until the engine warms up:
Rough idle when cold - motor starts up, revs up to about 2,000 RPM, then stumbles, motor bucks and shakes below 800 RPM, and has a surging idle. This will go away in a few minutes as the engine gets warmer.
Cannot accelerate beyond 35 mph - even with pedal floored, the motor has no power and cannot get beyond 35 mph. The engine is not revving high, but quite the contrary - you cannot get the RPMs past about 1,800. But be ready, with the pedal on the floor, when the motor finally "catches", it will chirp the tires and throw you back into the seat from the sudden acceleration.
No codes from the engine during any of this. I verified that the check engine light does work, its just not throwing codes. Here is what I have replaced so far:
Plugs & Wires (Motorcraft)
MAF Sensor (Motor Craft)
IAC Valve (Napa)
Throttle Position Sensor
Camshaft Position Sensor
Friends are telling me I need a new EGR Valve - one guy says his explorer did the same thing and it ended up being the engine ?!?!
What do the "experts" on here think??
