My Ranger is at the "everything is breaking" stage of its life, just under 100,000. It's been running rough and hesitating at low rpms, and threw the associated code, I think it was 1517. I checked and found three broken or cracked vacuum hoses, two of which were attached to the IMRC valve. However, replacing those vacuum hoses did nothing to change the symptoms.

What I've done already:
New Plugs
New Coil pack
New Vacuum hoses
Read about every post on the issue that I could find

What I'd like to know:
Is there a way to check the valve itself to verify it needs replacing? The part costs $170 from the dealer.

The valve has an electric solenoid that appears to open with voltage to allow the vacuum to pass through the valve. I have a volt-meter, but don't know what to look for. The contacts on the solenoid show continuity. If I put voltage to it, should I hear a noise? How much voltage does it take?

Now I'm off to put in a new water pump which failed today while I was trying to figure out the IMRC valve.

TIA

marlowe

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2001 Ranger 2.3L 4 cyl 2wd no mods 5sp manual

I haven't figured anything out yet. It's beginning to drive me nuts.

The code was p1537. Now that code is no longer indicated, but it is running the same and it's throwing codes for misfires in cylinders 1 and 4.

Here are posts I've run into with similar situations:

http://www.fordrangerforum.com/gener...-injector.html

http://www.explorerforum.com/forums/...d.php?t=229264
(I didn't see anything in the forum rules about posting links to other forums, please let me know if this is a problem)

The following picture shows the IMSC actuator location, but I can't see or feel it well enough to know if there is any linkage that can be checked - it appears to all be internal.


I was really hoping to find some info before spending more $$ on what may or may not be the problem.

marlowe

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2001 Ranger 2.3L 4 cyl 2wd no mods 5sp manual

I have been dealing with exactly the same problem

I wonder if anyione has replaced it and resolved the problems

I was hoping there would be a way to eliminate/bypass the part


does replacing the 120-170 dollar part fix this problem???


any one have a fix for this ?


my local autozone doesnt have the part ... looks like its a stealership found part or they have to be ordered online ....
either option doesnt make returniung for refund easy if the part doesnt fix the issue


Will a new imrc valve solve all these chugging hesitating rough running issues?

Did you ever resolve your issue. I'm having the same problems. Misfires 1&4, engine stutters between 1500-2200rpm. Idles great, accelerates fine justs misfires at that rpm range.
New plugs, cables, coil pack, oil change, fuel treatment. Sprayed starting fluid all around the intake manifold hoping to find a leak. I can hear a slight hiss at idle but can't locate a vacuum leak.

'06 Ranger XL 2.3L 2wd no mods 214000 miles

imrc is vacuum but if its not opening u need to replace the imrc ford need to do a recall on this cause alot of fords had this the rubber dry rots then starts to leak and its very common

At the very very front of the intake manifold, there is a cap for the runners that's famous for popping off. A lot of people have just JB-welded it back on, but to be perfectly honest, you're screwed. Those runner valves will start ripping the bushings apart and clacking around. Worst case scenario, one could break off and get sucked into the engine. If that happens, game over.

I recommend trying to get your hands on a new intake manifold. I've seen a few on ebay for $200. Far from cheap, but this problem will keep coming back to haunt you if there's actual mechanical damage.

*EDIT:* Just noticed you said '06 2.3. If that's the case, this is not your problem! Ford completely removed the intake runner control system in the 2004 revision, so anything '04 or newer will not have any of these components. Go ahead and start a new thread with some more details. There are a bunch of things that can start acting up with age. But before anything, what's the quality of your PCV valve and hose? They would be the first things in my target if I were you. Should that valve get clogged, it could start sucking oil into the engine. A little bit won't hurt anything, but if it's gulping it down, expect weird things to happen.

*EDIT 2:* I seen a pretty dark history on the timing chain tensioner from the newer Duratec engines, so that might be something else to look into. Unfortunately, I have no diagnostics for you on that. And if it is the problem…well, just hope it's not. Anything that involves touching the crankshaft pulley on that engine is a nightmare.

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2003 Ford Ranger XLT
2.3L I4 Duratec DOHC, 5R44E 5-speed auto, RWD, 7.5" Open w/ 4.10 Ratio, Gibson split-rear catback
Sonic Blue Pearl with dark gray trim

Thanks, I changed the PCV. I don't think it fixed it but no engine codes yet. I'm going to start a new thread.

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