rough idle

Aloha team, 3 quick questions: 1. Anyone have tips for determining if the PCV hose from the back of the engine is bad? How about replacing it- any easy way to remove/replace? 2. I just replaced intake gaskets - how can I tell if I'm still leaking? 3. Where else to look for a persistent 171...

Hi. Ok, I have several questions re my "new" aquisition of a 93 explorer, 4wd, 6 cyl. Friends told me if I could get their old explorer running, I could have it. Had been sitting in yard 5 years. Original owners. Only needed battery, and tire and viola! Off and running. 89,000 mi, 1 owner...

So I bought this 2000 ford explorer about a year ago and have been happy with it for the most part. However as of late I was noticing that the power seemed to have dropped a little bit which I attributed to age. But now a few other symptoms have appeared. When I'm driving down the road the car...

When we start it up in the mornings it idles rough and constantly stalls until we can get it running. After which the RPM starts bouncing between low and high. When we slow down to a stop it gets really rough and threatens to stall until we give it gas. Our issue is similar to the one in this...

I have 03 Mazda B3000 with the 3.0 in it. I have a really rough idle and a check engine light that come on after the 200 mile of clearing the light. Check engine lights reads- missfire on cylinder 3 and bank 1 system to rich, and miss fires on start up. I have just had both head rebuilt because...

OK, so I have a 2005 Lincoln Aviator, comes standard with a 4.6 (just like the Marauder). I have replaced the crankshaft position sensor, camshaft position sensor, spark plug, fuel filter, ran Lucas fuel injector cleaner, and replaced OEM coil packs with Accel coil packs and I still get a...

i'm some needing some help plz. I've bought another explorer this time a 99 xlt with 321k miles. First thang in the morning b4 motor warms up it idles really rough and actually during sometimes.after it warms runs like s brand new problems. Sometimes it does have a lil vibration through gas...

Sorry if I'm in the wrong place, never done anything like this before. please bare with me. Little back story to my Truck.(2000 Mountaineer 4.0L SOHC) I got the truck with a blown motor (blown head gasket, milk shake oil mix). Installed a quite junk yard motor, upon install put new upper and...

I bought my 1998 ford explorer xlt v6 sohc about a month ago now. I replaced the belt and will be doing a tune up this weekend but I believe that it has a vacuum hose leak. I heard hissing under the good after I turned the engine off. It was a soft hiss on the left side(when you face the front...

I have a 1991 Ford Explorer that will run fine until you turn the car off. If the car is at operating temperature and you let it sit for 20 minutes or so the car will not start. If you get there after about 15 minutes it will start, but you have to hold the accelerator to the floor because it...

I own a 93 Mazda Navajo, 4x4 (explore) and it keeps running a little rough when giving her enough gas to keep speed. The check engine light will come on when this happens then go off. I know I need a new muffler asap there is a huge hole in it. Well its not even a hole the whole bottom of the...

I own a 93 Mazda Navajo, 4x4 (explore) and it keeps running a little rough when giving her enough gas to keep speed. The check engine light will come on when this happens then go off. I know I need a new muffler asap there is a huge hole in it. Well its not even a hole the whole bottom of the...

Just bought a 2003 Sport Trac XLT. Has a rough idle, and while investigating the engine compartment for possible reasons, I came across a small tube that was laying loose on the left side of the engine near the coolant and windshield washer container. The plastic line is only about 1/8" in...

So I have owned 2 F150's and recently downsized to an explorer sport track. Found an 03' with 103K on it for 5200$ Clean truck has a few minor issues that need to be fixed such has new hubs, shocks, lower ball joints and needs a power steering pump. Couple things have me slightly stumped so...

Hi again, I have a 92 4.0L Eddie Bauer Explorer. It starts from cold just fine. Every time. However, when it is started after it has been driven and the engine has heated up it sometimes (maybe 1/3 of the time) idles rough as anything and feels like it is going to stall. It doesn't do...

My girlfriend has a '96 Explorer with a 4.0L engine. Starting last month the vehicle has begun to have a really difficult time running at idle. When I start I have to depress the gas and let it run for several minutes otherwise when I let it try to return to idle it will stall. Also when it is...

Last summer I purchased a 1996 4.0 L V6 Ford Explorer with a manual transmission and 135,000. Aside from a small oil leak from the valve covers I had repaired, I had no problems until the alaskan winter set in. After the temps dipped down into the single digits, I noticed startup become a lot...

I've had this problem for over a year now. I don't drive it a whole lot on the freeway, and it doesn't happen EVERY time, but some times when I get off the freeway and come to a complete stop, it idles rough. It's like the computer adjusted to fwy travel and didn't adjust back to stop and...

Hey Everyone, I had a recent problem that maybe someone on here could give some help with. I have a 2002 Explorer XLT, V6, with just under 180K. Problem: So about 2 weeks ago, my CEL came on. I ran the codes at Autozone and it showed P1131: Bank 1 Lean, Possible Misfire, Possible Vacuum...

Missing a hose on my 2002 Mountaineer 4.6L SOCH 16 valve V8 two hoses that come out of fire wall driverside larger hose on top and smaller underneath missing top one looks like a hardline but don't know what is supposed to be there

2000 Explorer XLT 4.0 liter OHC (I think) Has a check engine light constantly on not blinking and had a rough Idle. The #4 piston was misfiring so I changed spark plug and wire and the idle is dramatically better. Probably need to change rest of plugs and wires which will help the idle even...

Hi, I have a misfire on my 02 limited explorer. It runs ok when cold, but once it warms up, it has a rough idle, and misfires under light load in lower rpms. At WOT, the engine surges and the HP curve is not smooth at all. I've ran fuel injector cleaner twice, changed the plugs, and changed...

hey I just bought a 04 explorer and i'm new to this forum so any help on my issue would be greatly appreciated. so here's the deal, sometimes my truck dies while i'm stopped. i'll come to a red light and stop completly and my truck will stall. it doesn't sputter or give any sighns of problems...

Hey there, folks. I was driving my 03 Limited with the 4.6 V8 home from work today, when the SES light started to flash on me. On the way to work this morning, I noticed some surging while on cruise, with no difference noticeable in my tach or speed. I've been having the trouble with my OD...

Need help! I have a 1997 Explorer XLT. I am experiencing rough idling and stalling. Known Code: P0113 Startup: RPM will begin to fall to 500-800. Depending on the temperature, it will stall occasionally during the first 30 seconds. Shifting to DRIVE: The RPM will slightly drop and...

I have a 94 explorer with 130k miles on it. Lately I have noticed that after I run it a good 20 minutes or so, turn it off, then restart it 5 or 10 minutes later i get a rough idle. It gets a little worse once i put it in gear, but after i give it gas it seems to clear up. I have replaced the...

I am having multiple issues with my 1997 Ford Explorer. Engine = 4.0 SOHC, Vin E. I am by no means a mechanic, but I can do my own work. When I first start the engine, the RPMs highly fluctuate, a heavy vibration, and the engine rev's on its own. I have been experiencing very low MPG and...

I have a explorer sport 97 sohc with 160000 miles. I'm experiencing a rough idle and is throwing two cel codes p0153 and p1504 I have replaced both tge iac and o2 sensor. I have checked for vaccum leaks and have found none. Cleaned maf, throttle body, new iac, tps. I have ran out of ideas. Any...

Hello Ford Geeks, I'm new to this forum, so I'm introducing myself, as requested by the forum. I'm not a sporty, off-road motorist, nor Henry Ford throwback by any means-I prefer bicycling to driving on most commutes, and I wanted to find a Toyota Previa-AWD, before settling for the...

PLEASE HELP My explorer has a strange idle problem sometime. When I start my explorer, everything runs fine, in park and in drive/reverse. The problem occurs when I start the car a second time. Problem: After the explorer is started and still in park, the rpm will lower to less than 500...

Hello all, I have a stock 2002 Sport that has been problem free its whole life (161K miles). About 10K miles ago, I had the check engine light come on and hasn't gone off since. It didn't affect the driving, running or gas mileage- until recently. The gas mileage is still pretty good for me...

Hello all, I have a stock 2002 Sport that has been problem free its whole life (161K miles). About 10K miles ago, I had the check engine light come on and hasn't gone off since. It didn't affect the driving, running or gas mileage- until recently. The gas mileage is still pretty good for...

so im having some real trouble figuereing whats wrong with my explorer. during a koeo test i get a code 22. but during the koer test i get the codes 12, 13, 21, 32, 64, i used to get a 66 but i replaced my MAF so i no longer get that code. i have also replaced the O2 sensor. when i start her up...

Ok 1997 Explorer, 4.0 SOHC Engine, 105,000 miles I bought this a few months ago. It's my commuter vehicle. My drive to work in the morning is about 1/2 hour Coming home I sit in a bit of traffic so the commute is more like n hour and it's a bit warmer at that time of day here in SoCAl. After...

So I have a 98 Explorer, 4.0L OHV, VIN X (from Canada), 130,000 mi. Rough idle CEL on and off for a few months. So found a vacuum leak under the air plenum changed the intake gaskets, rebuilt injectors, new plugs. Still rough idle. Checked the IAT sensor, no continuity, replaced. Still rough...

(NOTE: 2 weeks prior to this all 3 ERG valves were replaced) Cranking hard, takes 2 or 3 tries to get it to stay on. RPMs are not consistent sometimes idling very low to the point of shutting off. Will lose RPMs and power while driving and not continue any forward movement. Actuator was...

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...