rough idle

I have a 94 ford explorer 4wd. 213,000 miles. Has been giving me alot of trouble lately. replaced coilpack, spark plugs and wires, maf sensor, egr valve. replaced fuel filter bc car wouldn't accelerate uphill or drive at highway speeds. mechanic found lots of trash in old fuel filter. but did...

about a moth ago my 1993 ford explorer xlt .4.0 6 cyl suv started making a a popping sound under the hood .like a muffled backfire.i put in a bottle of lucas problem was gone .a week later same thing again with idle low.so i changed spark plugs and fuel filter .problem stopped .for a few...

i got a 2000 4.0 v6 ford explorer xlt and its got a problem starting. every time i go out to start it i turn the key and it starts but dies unless i have my foot on the gas pedal. then while my foots on the gas it revs up real high but goes back down without moving my foot. its also got a real...

Hi all, I purchased a 1995 Ford Explorer XLT with about 160K miles. I managed to fix all the issues except for two that are driving me crazy: 1. After driving the vehicle for a bit allowing it to heat up, park it and shut off engine. Wait twenty minutes and go to restart and it...

First off let me say thank you all for simply lending your knowledge and support. Now for the meat of it, I have a 98 SOHC 4x4 thats on its third motor (everything else just keeps going so why not) any how last motor got a bad knock but still ran great but nsince I had another motor laying...

I'm trying to establish that the base ignition timing on my 2000 5.0 is 10*BTDC. I can not locate a SPOUT connector - does the 2000 model have one? If so, where in the hell did they hide it? Currently the timing light indicates it's at 10*BTDC on cold start and it idles normally. Once it...

Hello everyone forgive me if I posted incorrectly. My Ford Explorer 2005 XLT always surges on cold and warm start, changed coil pack, plugs, wires, serviced lubes etc even replaced with new throttle body, just reached 60,000 miles, experiencing rough idle. Been at this over and over for three...

This is my mom's DD, it is a 1997 4 Door XLT 4x2 auto with the 4.0 SOHC. Day before yesterday it suddenly started running very badly and will not stay running at idle. At 1000rpm or higher, it runs well, but below that it sputters and dies. Checked DTCs and found a P0153 O2 sensor code, bank 1...

Hi, I have a 1998 Mercury Mountaineer 5.0L. My check engine light came on and I took the car to autozone to have the codes read. Two codes came up P0340 and P0430. The P0340 was the cam shaft position sensor/synchronizer which I replaced. But the car still has a very rough idle when on park or...

so, after going mudding with some friends last night, my explorer died a few times due to excess water (we think) in the engine area (and possibly mud). we got it started all the time, and i idled it out at 2500rpms for about 2 mins each time to try and get all the **** out. now, i have a very...

My 1998 Ford Explorer 4.0L OHV recently started misfiring erratically. I took it to the shop and had them take a look but since I'm rather low on funds I had them do my brakes and I decided to do the plugs, wires, and ignition coil myself. This is the first car I've ever worked on. I replaced...

Long story short I just got my 2002 explorer sport 4.0 out of the shop because some @$$hole put sand/sugar in my tank. $1500 later I have 3 new fuel injectors, new lines, tank, fuel pump, fuel pump regulator and filter. When I took it in there was oil (I'm 99.9% sure its oil) covering the...

I have a 92 explorer. When we bought it back in October it needed new head gaskets, but ran smooth and strong. we took the motor out to replace them. now we cant get the damn thing to run right. It starts, but it sounds like it is out of time. it will smooth out for about 30 seconds and go back...

I recently bought my first Ex about 2 months ago. When I first got it there was a little lag time, or hesitation sometimes taking off from a stop. It also idled a little low for my taste and shuttered from time to time. It is a 2004, 4.6, with the "drive by wire" throttle. It was doing this when...

ok where to start.... i have a 91 explorer eb version 4 l v6 here are my problems my spark plugs get fouled shortly after i replace them, some of them have what looks like caked on oil with what looks like little pieces of black stuff on them...and the plug thats farthest back on the...

Start engine in morning and idles perfect, When i turn the ngine off and restart the check engine light stays on and the engine will not idle and then stalls. You can smell the raw gas. I can keep engine runninng with light pressure to gas pedal. The first day problem only happened once and...

I've got a 2000 Explorer Sport (2dr) w/ 4.0 X-Vin OHV with 126xxx miles and I've got a few engine issues I'm trying to diagnose, wondering if the issues I'm having are connected - mechanic hasn't been a big help. Here's what I'm seeing: - Check Engine Light has been on for some time...

Hi All, I have a 1998 Explorer XLT V6 that I got from my brother in law (I know, you're all groaning already). Anyway, he gave it to me for free and we dumped about $3K in parts to bring it back to life and ever since the work was done (by my brother in law), it had a new rough idle. I...

We have a 2002 Ford Exploreer 4.0l. When we start it cold and place into gear, the engine rpm surges up and the car leaps forward or backward. Seems to be a cold start issue. The car also idles rough. If it does not start the first time, on occassion, you have to crank 5 - 10 seconds and...

hello everyone i have kind of a weird problem. my 99 explorer sport has had a cold start problem with a lean code on bank 1 forever. we change the o-rings,upper and lower, which fixed the problem. now i have a new cel code p0420: cat efficiency under threshold which cause the truck to...

Hello all, I have had my '99 Mountaineer 5.0L V8 AWD for 1.5 years now. Since I bought it, I have replaced: MAFS, A/C Clutch, 2 Front Wheel bearings, Front Pads & Rotors, Intake Manifold Gaskets, Fuel pump, Fuel filter, Idle Air Control, and PCV Valve and have done a rebuild on the front...

Searched and still not clear. Left my mother-in-law sitting in my 172000 mile XLT yesterday for about 25 minutes with the engine running (insert own joke here, she was cold). Came back out and engine was idling rough, smooths out a little during acceleration, but still running rough, also...

hello all.. i just changed the o rings gasket -upper and lower-on my 99 explorer sohc 4.0l, because of a cold start problem. it fixed the problem but left me with a rough idle that is more prominent when the car is hot and idles at a lower rpm (600 or so). before that, i have changed the...

I replaced my plugs, and wires but my engine shakes now worse than it did before and I don't know why. I've tried the fuel injector cleaner with the premium gas and it still shakes, it idles rough all the time whether i'm at a stop light or stop sign and sometimes will die on me if i turn my...

I've searched the forums and couldn't find a similar issue, so I'm going to start a new thread for this question. If it has been answered before, please accept my apology. I have a 1995 EX, 4.0, 4x4. The odometer stopped turning in 2005 with 208k. I’ve never had many problems. I had to...