Freeze Frame DATA P1306

[azharj]

Hellow all
I have windstar 2000 it is 2.78K miles. Thanks the car did not have drivability problem except occasional stuttering once in a day or two days at RPM 1500 to 2000. Since two years the CEL was on (DTC P0156). I bought my own Autel AL519. No Monitor was ever ready. I replaced Oxygen sensor erased the code. The stuttering remained though irritating. No misfire were detected, no freeze frame Data or DTC stored. After one weak of driving, all monitors were on. When I was checking live data, at idle RPM varied 650 to 800 constantly, all the time. At idle spark advance also varied constantly between 12o to 25o. Today, I noted freeze frame data showed as follows; but no DTC and CEL.
FRZF P1309
Fuel Sys 1 CL

Fuel Sys 2 ??

LOAD 45.1

STFT1 -5.5%

LTFT1 0%

STFT2 -3.1%

LTFT2 0.8%

RPM 2094
VSS (70KMPH)
ECT 90 C

2) Sometimes the Reverse Lights ore on even if drive is parking. Moving the gear lever back to reverse and parking puts the reverse Light off. Once I noticed that I could start in neutral or could not start in parking I had to move the gear lever parking –back –parking
Should I change the Camshaft Sensor only or shaft (synchronizer) as well? What about TRS
Azhar J

[wiswind]

I will be up front......I am not knowledgeable at all about the data you are reading as I have no experience with that.

The Transmission Range Sensor.....AKA Neutral Safety Switch (same thing) is often needing replacement on your year of Windstar.
The issues you mention are consistent with that. It may be listed under either name at the auto part store........both the same part.

Otherwise, make sure that you are up on all the routine maintenance items.
The CORRECT spark plug must be used......the wrong plug can cause issues.....
Specifically, the multi pronged spark plugs that they sell are NOT good for the Windstar application.
The coil pack is another item that seems to fail a lot. Cracks develop in the epoxy body and then the high voltage arcs through the cracks.

Without having any codes makes troubleshooting quite difficult.....as you well know.
I hate to see you throw parts at it trying to find the issue.......I have been down that SAME road personally......hind sight.....I should have waited for it to get bad enough to set the CEL.
I had a different problem.

I would not jump to the camshaft synchronizer at this point.

Verify that you don't have a vacuum leak......that the flex hose from the filter box to the throttle body is secure...PCV line is not cracked (happened to my '96) and that the PCV breather line (flex hose to valve cover) is connected.
Also, the vacuum lines on the back side of the upper intake manifold.

The other thing that happens with 1999 and newer is that the IMRC linkage can become disconnected.....and they flap around.

EGR ports in the lower intake manifold can cause studder.....and removal of the upper intake manifold is required in order to clean them.
The DPFE (EGR flow sensor) also can go bad.

There is a TSB that there are LOTS of posts on here about replacement of grommets on the bolts that hold the upper intake manifold to the lower intake manifold.....the original ones break down from oil and cause leaks (same thing as a vacuum leak as far as the engine is concerned).
There are posts and pictures on here about that.
This issue was for years 1999 and newer, so I do not have any personal experience with that.

You mention the Idle RPM variation from 650 to 800.......do you notice this on your tachometer in the dash or can you hear this variation?
Intermittent vacuum leaks......as mentioned.....could cause this (along with other things).

[azharj]

Thanks wiswind whatever you have written about Air leaks I already done and checked. On dash board no variation. I wrote the Data from scanner. Coil pack and plugs are also new. Today after driving 30 km DTC stored and CEL on the DTC id P1309, during last 10 years I have never changed or open the synchronizer

[tomj76]

I wasn't aware that you could have Freeze Frame data without at least a pending DTC. Are you certain that there isn't any code pending or set? I don't see anything in the long term fuel trim data that looks like a problem.

The freeze frame data shows DTC P1309, which is a possible indicator of a faulty or maladjusted CMP sensor, consequently why you are thinking of changing the sensor.

There are Youtube videos that describe how to test the CMP sensor, so that you don't waste money replacing a good sensor. I personally like to independently verify a sensor or other component is bad before replacing it, so I regularly test items. For example, the O2 sensor can be tested by two methods... simple one is to swap the bad one with the same sensor in the other exhaust path. Another method is to bench test the sensor by appling flame heat to the sensor while checking the output voltage (if the sensor signal is low as in P0156). You might do the equivalent test for the CMP sensor.

This thread may help:
http://www.automotiveforums.com/vbul...d.php?t=411676

[azharj]

Dear all,
Thanks for posting the link. Actually, there was pending code 1309 with freeze data. After sometimes the DTC was set P1309. Many posts on the net recommend changing of both camshaft sensor and synchronizer. But all mention different angels from center of the engine, 20 degree to 54 degree; what is for windstar 2000. I changed the camshaft sensor, though the older one looked normal. I cleared the code and but DTC 1309, but came again with CEL. The rotor with its tooth, looks normal except that there is some rotational play, but no side to side or front to back play. Is this play normal? After a few days, I will change the rotor and see what happens.

[tomj76]

Your problem might be due to issues with the connectors and wiring. I don't remember how much backlash is normally found in the sensor shaft. There should be some given that it is a worm drive screw gear.

[azharj]

The thread of the topic is wrong P1306 instead of P1309 so will start new thread.
http://www.automotiveforums.com/vbul...49#post7195249