92 Explorer unresponsive questions
Thread Starter
|
Senior User
Joined: Jun 2003
Posts: 166
Likes: 0
From: Delaware
92 Explorer unresponsive questions
Hi all,
To those that own or may have input regarding my 92 Explorer XLT unresponsiveness...
Put a rebuilt engine 2,300 miles ago and at best I'm getting 14 mpg. Also I notice sluggishness unless I'm at 3,000 rpm (which is almost always to get to decent speed of 45 mph) from a full stop. Is this normal for a 4.0 V6? I also had the tranny rebuilt and recently checked. On my daily commute, when trying to merge onto a busy highway, I'm afraid I'd get rear-ended with the gas pedal to the floor and the truck so sluggish it takes a while to get to speed of 45 mph or better.
Is this normal for this truck or am I just used to driving my Expedition with 5.4? This is driving me insane...hopefully someone has had experienced the same problem or may have an input.
Many thanks and drive safe,
Dan
To those that own or may have input regarding my 92 Explorer XLT unresponsiveness...
Put a rebuilt engine 2,300 miles ago and at best I'm getting 14 mpg. Also I notice sluggishness unless I'm at 3,000 rpm (which is almost always to get to decent speed of 45 mph) from a full stop. Is this normal for a 4.0 V6? I also had the tranny rebuilt and recently checked. On my daily commute, when trying to merge onto a busy highway, I'm afraid I'd get rear-ended with the gas pedal to the floor and the truck so sluggish it takes a while to get to speed of 45 mph or better.
Is this normal for this truck or am I just used to driving my Expedition with 5.4? This is driving me insane...hopefully someone has had experienced the same problem or may have an input.
Many thanks and drive safe,
Dan
Freshman User
Joined: Jan 2004
Posts: 30
Likes: 0
From: Hampton Roads
Your car's performance is not normal. I have a '92 Sport with 116K (original engine and tranny). I almost never have to accelerate beyond 2500 rpm. Sluggishness and 14 mpg indicate that there is something wrong with your engine. Have you had a Check engine light? Are there any other indications (tires, brakes, oil consumption)? There are many threads on this forum which discuss similar problems. You might search for threads about MAF, IAC, intake manifolds and such.
Elder User
Joined: Aug 2002
Posts: 886
Likes: 0
From: Cincinnati
Normal? You tell me. Did you ever drive this before all this rebuilding? Just trying to determine if this is an objection of the normal 4.0 or you believe you have a component failure like fuel delivery.
Thread Starter
|
Senior User
Joined: Jun 2003
Posts: 166
Likes: 0
From: Delaware
thanks
thanks for the replies...brakes are new and so is the fuel pump. I'll give the IAC and the MAF some cleaning. What are the chances the fuel injectors' the culprit?
It's hard to tell since I own several bigger trucks. But then again as a member replied, he hardly goes over 2500 rpm...hmmmm
Thanks again for your time.
Drive Safe,
Dan
It's hard to tell since I own several bigger trucks. But then again as a member replied, he hardly goes over 2500 rpm...hmmmm
Thanks again for your time.
Drive Safe,
Dan
Senior User
Joined: Feb 2004
Posts: 121
Likes: 0
i have 93 explorer sport..my wife drives this daily. when i hopped in it to go wash it, i noticed that when you hit the gas, she fell on her face..merging onto the interstate was a scary thing..once again, it just fell on its face. so, i spent a day giving it a tune up, plugs, wires, fuel filter..and all the other normal routine things...hopped in it to test it out...same damn thing, but it was a little better...so i went and bought a fuel pressure tester, hooked it up and bam...low fuel pressure....all that was wrong with it was the little ol' regulator...so before going through everything, i personally would recommend testing the fuel pressure and making sure you have the correct pressure...dont know if that helped but that was my experience
Elder User
Joined: Aug 2002
Posts: 886
Likes: 0
From: Cincinnati
There can be problems with the fuel pressure regulator when a new pump is installed. Some wear a bevel on one side of the valve seat because of a spring which isn't centered. A new pump has higher flow rate and it causes the valve to stick open some times. Pressure should be 39# prior to starting and around 33-34 at idle. Problem may not show up in pressure test. I monitored fuel pump current as I drove around which is usually around 5A. If it drops much below 4A ther is likely a fuel system problem. You may want to disconnect the battery if parts in the fuel system have changed. Mine was better after new FPR but not right for the next 200 miles till I disconnected the battery. They have trouble relearning major changes.
Thread Starter
|
Senior User
Joined: Jun 2003
Posts: 166
Likes: 0
From: Delaware
Update
Thanks to all that responded to my questions....
The fuel filter was full of dirt and black fuel was coming out of it after I had it replaced. My theory about this happening is either when I had the new engine put in and I never replaced the filter or after the dealership lowered the gas tank to replace the faulty fuel pump, all the silt at the bottom of the tank must've been pushed to the fuel filter by the new pump.
I apologize it took so long for me to respond but I only got the truck back yesterday after 3 days on my third mechanic who also happens to be the cheapest in the block. He just found himself a new customer.
Drive Safe,
Dan
The fuel filter was full of dirt and black fuel was coming out of it after I had it replaced. My theory about this happening is either when I had the new engine put in and I never replaced the filter or after the dealership lowered the gas tank to replace the faulty fuel pump, all the silt at the bottom of the tank must've been pushed to the fuel filter by the new pump.
I apologize it took so long for me to respond but I only got the truck back yesterday after 3 days on my third mechanic who also happens to be the cheapest in the block. He just found himself a new customer.
Drive Safe,
Dan
Thread
Thread Starter
Forum
Replies
Last Post
sdsurf
Explorer, Sport Trac, Mountaineer & Aviator
7
May 13, 2002 06:28 PM
