Cutting off

[jel5555]

So the 2000 explorer cuts off at stop lights and less frequently lurches forward. no apparent pattern to it, starts up immediately after with very little trouble-most of the time. searches have suggested that the camshaft position sensor may be the culprit. I am looking for any insight from someone who may have had a similar problem. only codes that came up were lean bank 1, 2. Truck runs just fine other than occasionally shutting off at stoplights. the tachometer doesn't read consistently, and occasionally when restarting the engine after it has been running for a while it stumbles before catching but always seems to start up.
please help....I am not a fan of throwing parts at the problem, and i have a problem taking the truck to a dealer when i can do most of what they charge $90/hr to do.
many thanks....

 

[swshawaii]

OHV, SOHC, or 5.0L V8? :scratch: Please complete your vehicle specs, only need to do it once. (Thread Display Options)
http://www.explorerforum.com/forums/profile.php?do=editoptions

SOHC Lean Condition Procedure
http://www.explorerforum.com/forums/showthread.php?p=2364255

 

[koda2000]

you don't say what engine you have. the SOHC V6 engine is particularly prone to developing intake manifold leaks. this causes lean codes. you can also have vacuum leaks caused by cracked/disconnected/rotten vacuum lines and/or PCV valve elbow and grommet leaks. running with vacuum leaks causes erratic idle, stalling and hard starting. i suggest you start by doing a thorough inspection of all your vacuum lines/hoses, as these fixes cost next to nothing (and don't forget to check the vacuum reservoir in the passenger side front fender). if everything else checks out, it's probably time to invest in new upper & lower intake manifold gaskets/o-rings. do it yourself and it should cost you under $50.

while your at it, replace the fuel filter if you haven't changed it lately. some have reported a clogged fuel filter caused lean codes, but personally i don't know that i buy that. still, inexpensive enough and couldn't hurt.

 

[SoNic67]

Besides the lean codes that don't help the idle, it might be also the IAC valve. If that's the case, you will notice that tapping the gas pedal just a little when RPM's drop, it will help the vehicle from stalling. This will happen especially while engine has a small load - like A/C kicking in or at stop light, with gear selector is in 'D'.

 

[RTH625]

I have had a similar problem with my Dakota, I know it's a dodge. It would die at stop lights sometimes and cut out driving down the road for a split second. It never had any codes. I replaced the Idle Air Control Valve, Throttle Position Sensor, MAP Sensor, coil, cap and rotor. After buying a good scanner and scanning it, I found out it was the PCM. My advise is to get a shop manual and check the volts on the sensors and IAC. If you don't find anything, get it scanned at a garage. Hope this helps

 

[SoNic67]

PCM and GEM can be put in self-test mode with a cheap ELM327 clone tool and the free Fordscan program that I linked here on forum:
http://www.explorerforum.com/forums/showthread.php?t=397480

 

[drdoom]

Check hoses going to IAC, the tee is hard to see but I have popped one loose by mistake once, and had same symptoms.