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2006 Police Interceptor Crown Victoria


prorider310r
12-15-2008, 10:09 PM
I have a 06 PI crown vic, it has a p0068 in it TPS, MAP, MAF code in it along with other codes relative to that one. I don't have the codes with me right I am at home I can post them tomorrow once I get to work.

What its doing is according to the officer it is stalling out on him he said it stalled 9 times today.

I had this car in the shop test drove it , it ran great idled great for me.

This car has the throttle actuators on it there is no throttle cable, by data stream info all every thing seems to be working fine.

Any ideas anyone ?

Any help will be appreciated.

way2old
12-16-2008, 07:09 PM
We had one doing about the same thing and we found the fuel pressure sensor in the tank shorting out and taking all the reference voltage from the PCM. Look at all the sensors individually to see if you can pinpoint the one. Does your shop have a PDS? If it does, use it to monitor the sensors and you will find a sensor out of specs. Good luck. WHen you post all the codes, I will search the manuals to see what I can find.

Also check TSB's for problems with the throttle body.

prorider310r
12-18-2008, 11:47 AM
UPDATE: Ok I put a new Ford throttle body on the car, drove it, its still cutting off.

Its cutting off under hard braking mainly, sometimes it will cut off under normal braking, but it is more likely to cut off under any hard braking I can get it to do it about every time I brake hard. Sometimes normal braking it will idle completely fine.

I installed a new air filter on it the air box is fine no warping or cracks or anything of that nature, the snaps that hold the air box are in place.
I disconnected the EGR valve on it, it didn't affect it, still doing it I unplugged the electrical connector and the vacuum connections and plugged them.
I also checked the fuel pressure on it with a live guage drove it the spec I have from alldata is 35-70 psi. The car has 30 psi idling fine, when you go to drive it will go up to 36-38 psi. When the car stalls the fuel pressure is 30psi once the car intially cuts off, immiedately after it stalls the the f/p jumps up to 72 psi. Once the car fires back up the fuel pressure will drop slowly idling to 26 psi then it will immeidately shoot back to 30 psi and the car runs fine.
If you crank it right up when it shuts off and take off the f/p will drop down to about 16 psi then it will immeidately shoot up to 30 psi and the car runs fine.

It acts like the fuel pump shuts off then cuts right back on after the stall but I don't think its cutting off to causing my driveablity problem.
It runs great under acceleration at WOT no driveability problems at all it just wants to stall when you stop.

I also reset the KAM on the car to see if that would help it also that had no affect on it cutting off either.

Everything I was tried was done singlely, I made one change at a time to see if any single thing would help it.
The car has no trouble codes in it at all.

Any input is MORE than welcome, if anyone wants to call me my cell is : 434 579-2568 the shop number is 434 822-8322. I will be here at the shop until 5:00 est time.

Thanks,

Earl

way2old
12-18-2008, 05:48 PM
Here is a short description and possible causes for the P0068. Also when you reset the KAM, you erased all the original trouble codes.

Description The powertrain control module (PCM) monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. If during a key on engine running (KOER) self-test, the comparison of the throttle position (TP) sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a DTC is stored in continuous memory.

Possible Causes Air leak between MAF sensor and throttle body
TP sensor not seated properly
Damaged TP sensor
Damaged MAF sensor

Diagnostic Aids Drive the vehicle and exercise the throttle and the TP sensor in all gears. A TP PID (TP V PID) less than 4.82% (0.24 volt) with a LOAD PID greater than 55%, or a TP PID (TP V PID) greater than 49.05% (2.44 volts) with a LOAD PID less than 30% indicates a concern is present.

prorider310r
12-18-2008, 06:18 PM
When the car orginally came in it had no codes in it. The officer brung it back about two weeks later it had the p0068, p061B, p2106. I cleared the codes he brung it back 4 days later said it cut of nine times with him. I checked it it didn't have any codes in it. And, I have got it to cut off many many times today and it does not set a code.

I have a modis I can't monitor the tps and the load pid on the same screen. I can do them individually but not both at the same time.

I took the entire back seat out the car, "which is plastic",
I can see where the harness comes up through the car runs up
to the "thin" rear seat plate and goes across. The wires are
perfectly visable no chafing or cuts, I looked at the
harness as it comes down the drivers side of the car no
chafing or cuts there either.

I got the car to act up will monitoring FTP voltage, and it
never drops out, this was through data stream info though. I
got underneath the car the wires appear to be fine coming
off the sending unit as they go inside the car.

Thanks for any input, it is greatly appreciated.

Earl

way2old
12-18-2008, 07:22 PM
Have you checked the TSB's concerning the codes? 07-22-6 addresses the P061B and the P2106. Hopefully you can decipher it .

Printable View (48 KB)
TSB
07-22-6 MALFUNCTION INDICATOR LAMP (MIL) ON - DIAGNOSTIC TROUBLE CODE (DTC) P2106 AND P061B - POLICE INTERCEPTOR BUILT BEFORE 10/19/2007

Publication Date: October 24, 2007

FORD: 2005-2008 Crown Victoria


ISSUE:
Some 2005 to 2008 Crown Victoria Police Interceptor vehicles built before 10/19/2007 may exhibit MIL illumination accompanied with a lack of power and/or a buck/jerk condition on acceleration, especially in colder temperatures. This may be caused by an improperly sealed air box resulting in inaccurate air flow measurements by the mass air flow (MAF) meter.

ACTION:
Check lower air cleaner assembly for case distortion resulting in improper air filter positioning. Follow the Service Procedure steps to replace the warped air cleaner assembly.

NOTE: THIS ONLY APPLIES TO CROWN VICTORIA POLICE INTERCEPTOR VEHICLES.



SERVICE PROCEDURE

Remove the upper air box cover as per Workshop Manual (WSM), Section 303-12. Check the lower case for outward distortion of the walls which results in improper air filter fit. Check any areas along the length or width of the air filter seal which are not in contact with the lower case.
If the case is not warped, do not continue with this TSB and refer to the Powertrain Controls/Emissions Diagnosis (PC/ED) for further diagnosis.
If the case is warped, proceed to Step 2.
Replace the air box assembly per WSM, Section 303-12.
Clear all DTCs.

PART NUMBER PART NAME
8W7Z-9600-A Air Cleaner Asy


WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME
072206A 2005-2008 Crown Victoria Police: Replace The Air Box Assembly, Includes Time To Check And Clear DTCs (Do Not Use With 12650D, 9600A, 9601A) 0.4 Hr.

DEALER CODING
BASIC PART NO. CONDITION CODE
9600 07

--------------------------------------------------------------------------------

NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.

Copyright © 2007 Ford Motor Company

prorider310r
12-18-2008, 10:37 PM
Yah that was one of the first things I did was I saw that TSB and followed up on it.

In my post #3 I touched basis on the air filter you may have over looked it though.

Any more input is MORE than welcome, I am open to any suggestions.

prorider310r
12-20-2008, 08:57 AM
I figured out what was going on with that crown vic. The wiring harness was laying on the brush guard in the left front brush guard brace was my problem, it was chafed very slightly to cut the car off.

Thanks,

Earl

way2old
12-20-2008, 01:25 PM
Glad to hear it. We do not run brush guards on our veehicles, but the older Vics had a problem with the wiring under the battery. It had a loop in it that would collect water and corrode the wires. Glad to herar the fix. Fix replies are few anf far between. Thanks again.

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