Engine Stalls at idle

Tiny
RACEFAN966
  • MECHANIC
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Good this eliminates that from being it. Now did you check the mass air flow meter? I would like you to also check the coolant temp sensor and air charge temp sensor. Just unplug them when the car is cold like in the morning before it has been started. Now with the multi meter set it on ohm's and with the sensor unpluged check ohms across the terminals of the sensors (not wire harness) and get back to me with the reading on both and the air temp at the time.
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Wednesday, September 2nd, 2009 AT 10:03 AM
Tiny
BCANDERSON
  • MEMBER
  • 19 POSTS
Found a vacuum hose that was mis-connected and the CMP had been broken at one time, then glued back together, the glue has let loose. I have a Motorcraft CMP and will replace it soon then do a test drive.

Maybe some where along the line I cured the problem and at the same time misconnected the vacuum line and bumped the CMP which caused the CMP to come loose.
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Wednesday, September 2nd, 2009 AT 12:42 PM
Tiny
BCANDERSON
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  • 19 POSTS
Ok maybe I'll never know. I reconnected the vacuum line and replaced the broken CMP sensor


https://www.2carpros.com/forum/automotive_pictures/401756_9_Sept_2009_003_1.jpg



with a motorcraft replacement, and the darn thing has been working perfectly since. It's hot out, so I drove down town and parked it and let it heat soak, then drove it back about 6 miles each way in stop and go traffic with no problems.

Unless it rears it's ugly head again, I'd say it's cured.

It could have been a plenum leak all along, and when I resealed the plenum I failed to connect the vacuum line correctly so the symptoms remained the same. That and the cam position sensor that was glued together with epoxy that would soften when heated would result in the bizarre conditions experienced.
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+1
Wednesday, September 2nd, 2009 AT 6:04 PM
Tiny
SCHRIMPIEMAN
  • MECHANIC
  • 166 POSTS
Back on August 30th, I suggested you investigate the CMP sensor since you got the P0340 code. Despite my recommendations, you took unnecessary steps with the alternator, MAF, and TPS instead.

Not all is lost, though; you gained some experience with different components even though they didn't relate to your problem. Believe me, I've chased my own tail round-and-round before coming up with a solution. I just wish you would have taken my advice with the long article I left you on August 30th regarding the CMP sensor.

I don't mean anything offensive by this note and in no way am I a Mr. Know-It-All; I truly hope you resolved the issue. . But I told you so. Check the CMP.
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Wednesday, September 2nd, 2009 AT 8:46 PM
Tiny
BCANDERSON
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Hey No Problem. I deserve an "I told you so" Thanks for the input. Like you said, it was a learning process and I am much more comfortable playing around with the windstar than I was before.

Even if I wasted some time and money, it's like my wife said. "It was still cheaper than a car payment"

Thanks Again
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Wednesday, September 2nd, 2009 AT 10:52 PM
Tiny
RACEFAN966
  • MECHANIC
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Ok first I am sorry that guy ripped you a new one that was uncalled for. I had you do the other tests to one rule them out and also it let me know that you are getting power to those sensors so it also rules out the PCM for now too. Now with that said lets look at the cam sensor. Use pic below to help with the testing. I am going to give you the test a step at a time if you don't mind. First unplug the sensor and then hook up you volt meter between the VPWR term on the wiring harness and ground. Turn key on engine off and note voltage. If more then 10.5 volts then wire is good it not find break in the wire. Now if you do have 10.5 volt or more then you to check the ground. Turn key off again and hook up you meter between pwr/gnd (pin 24) and ground and now you will measure ohms should be less the 5 ohms. Now if this checks out get back to me and we will go to the next step ok. You are not testing the sensor yet you are testing the wire harness that you unpluged ok. Here is the pic of the plug.


https://www.2carpros.com/forum/automotive_pictures/249564_Graphic_128.jpg

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Thursday, September 3rd, 2009 AT 10:45 AM
Tiny
BCANDERSON
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  • 19 POSTS
After my last post I've taken a 250+ mile road trip, and did the normal driving around town with no problems. Like I said I'll never know if the original problem was a plenum leak (vacuum leak) and the broken cam sensor was just confusing the issue or if it was the broken cam sensor, or both that was causing the problem. Either way. It's cured.

Thank You all for your help!
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Wednesday, September 9th, 2009 AT 11:56 AM
Tiny
RACEFAN966
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Great glad to hear it is fixed. Again sorry the other guy did the I told you so not needed. If you have any more questions please just ask. Thanks again and have a great day.
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Thursday, September 10th, 2009 AT 10:23 AM
Tiny
RICK GOSWICK
  • MEMBER
  • 5 POSTS
  • 1999 FORD WINDSTAR
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
Engine Performance problem
1999 Ford Windstar 6 cyl Two Wheel Drive Automatic 133000 miles

Van threw a code and my mechanic said to replace the EGR valve. Seemed simple and after the 1st EGR was installed by me I had the same problem. So I replaced the gasket (1st one was slightly knicked) with a good one. Same problem. Runs ok but at a stop the engine trys to stall out. If I put the gearshift in Neutral, the idle levels out and car runs reasonibly well. I put a new fuel filter on in the beginning thinking I had bad gas. But now I am lost. I threw another code, but have not had it read. I cleared the computer after the 2nd EGR replacement by unhooking the battery cable. HELP please
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
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Help is here. What you need to replace is the egr pressure sensor or DPFE. It costs about 50 bucks and has 2 vacuum hoses from the exhaust going to it and a electrical plug. Buy the new one and you will see it. Its very simple to install. These egr valves dont go bad, its always the sensor. Hope this helps
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
RICK GOSWICK
  • MEMBER
  • 5 POSTS
MTT I Tried a new pressure sensor, you were right, it was a simple no brainer of an install, done in 5 minutes or so I thought, you see, this did not solve my problem. Any other suggestions? Still lookin for that 5 min. Cheap Repair

Thanks for you help so far
Rick Goswick

rickgoswick@yahoo. Com
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
MASTERTECHTIM
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I need to know the exact code that turns on the engine light. You have a odd one, this usully always fixes the egr code for low flow and high flow. Did you look inside the rubber lines and make sure they are installed correctly, not split ends?
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
RICK GOSWICK
  • MEMBER
  • 5 POSTS
MTT A friend @ work used his computer to pull the codes and Steve also reset my computer. Steve said ---System too Lean
Bank 1 PO171
Bank 1 02 Sensor(Oxeygen Sensor)?
Exhaust Gas Recirculation flow Insufficient Detected
Now MTT, I did not clear the computer the last time, when I put the Pressure Sensor on. This is all Greek to me, hope you can make heads or Tails out of this imfo. If needed, whenever I throw another code, I will let you know.

Thanks again for your time and Smartz
Rick Goswick rickgoswick@yahoo. Com
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
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Just repost on this post ans I will see it.
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
RICK GOSWICK
  • MEMBER
  • 5 POSTS
STEVE @ WORK READ MY CODES TODAY and we have 3 and a question
1. Po171- Bank 1 to lean
2. Po174 Bank 2 to lean
3. Po401 Exhust Gas Recirulation system
Tim, I pulled the hoses off the Pressure Sensor and with the engine running, I had alot of airflow with both hoses. Both hoses seem to be in good condition with NO splits or cracks. HOWEVER_ the "Vacumn" line on the EGR Valve is different in that there seemed to be NO VACUMN @ that hose. I dont really know where this hose goes, because it goes behind the engine and out of sight. HELP again PLEASE
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
MARVEYLUS22
  • MEMBER
  • 5 POSTS
  • 1999 FORD WINDSTAR
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 79,000 MILES
Engine Mechanical problem
1999 Ford Windstar 6 cyl Front Wheel Drive Automatic 79,000 miles

It has 79,000 miles on it. I`ve replaced the fuel filter. Problem occurs after driving for awhile. The engine will stall, and shut off like it is running out of gas. When I attempt to restart it flutters for a second or two then dies. Try to restart turns over but will not start up. After waiting for approximately 10 minutes it fires right up. It will do this just about every time when driving across town or a lengthy trip, but not when I go short distances. Thank you for your time.
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
There will only be vacuum at the egr with engine in gear and a load on system. The 2 lean codes are caused by either a dirty mass air flow sensor or a vacuum leak. This is a easy one to detect if you have a scan tool and can read o2 sensor data with the engine cold. There is a bulletin from ford for the intake gaskets leaking causing the lean issue when cold and when the engine heats up the gaskets expand and the problem goes away. It seems you have covered the basics on the egr problem, now we need to get a little crafty. You need to check the egr passages for blockage, this can be done by using a vacuum pump and put pressure on egr vacuum port with the engine running and the vehicle should almost stall or actually stall, if it does then we know the passages are clear. Get back to us
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-1
Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Next time it will not start do below immediately to determine if its fuel or spark problem.

Disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
RICK GOSWICK
  • MEMBER
  • 5 POSTS
MTT found a vaccum hose off @ back left of engine, running fine now BUT now my heater has no heat, guess I have to tear in to the area beneath the heat controls and see what was making the "funny" noisae before it stopped making hot air. Any pointers on this? What am I looking for this time

Rick Goswick
rickgoswick@Yahoo. Com
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Monday, March 13th, 2017 AT 1:18 PM (Merged)
Tiny
MARVEYLUS22
  • MEMBER
  • 5 POSTS
Thanks for the reply. I`ve checked the spark, and the fuel pressure. It all checks out. I am starting to believe it is from oil leaking from the EGR valve causing a vacuum leak somewhere the AT THE FUEL PRESSURE REGULATOR VACUUM LINE, OR AT THE GASKET BETWEEN UPPER & LOWER INTAKE MANIFOLD ASSEMBLIES BECAUSE OF LOSS OF TENSION AT ISOLATOR BOLT ASSEMBLIES DUE TO CONTAMINATION OF THE RUBBER GROMMETS.
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Monday, March 13th, 2017 AT 1:18 PM (Merged)

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