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3L SCT Xcal help
#1609144 07/13/06 12:15 AM
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goalcoach Offline OP
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I have a '97 Contour with a full 3L Taurus swap, SVT MAF, SVT cams, MSDS headers, Borla exhaust, fidonza flywheel, open element air filter, 24 lb injectors (w. fuel rail converted to return).

The issue I am having is the vehicle will start and run on the stock 2.5L tune, but when I flash the 3L tune, it will not start and when I do get it started, it runs rich and flags P1131 and P1151. Anyone have any idea what might have been missed in the tune? I do know that the downstream O2 sensors are shut off and it is programed for the 24 lb injectors and no IMRC. The tuner has tried multiple tunes and we can't seem to get it to start and run correctly.

Thanks,

Art

P.S. the only code I have gotten with the stock tune is P1000 - though it doesn't run the smoothest!

Re: 3L SCT Xcal help
#1609145 07/13/06 05:45 AM
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RodneyBur Offline
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I have a quick question for you. Where did you get your 24lb injectors from? Do you have a pic of them and a part number?

If they are from your 3l engine then they are NOT 24# injectors. That may or may not be your problem. It seems it would be running lean if you are coding for 24 and are running 19 though.

SEE HERE

P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank No. 1.
P1151 Lack of upstream heated O2 sensor (HO2S 21) Switch, Sensor indicates lean bank#2

I have a 3L with all SVT components, no secondaries, and 24# injectors (which are BLUE and from pre 99 3.0). I am running a stock ECU and am definately running rich. My car starts every time (after a couple revolutions of starter) but will not idle unless I keep on the gas to get RPMs up.


Re: 3L SCT Xcal help
#1609146 07/13/06 05:52 AM
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RodneyBur Offline
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Originally posted by Mustang:
Here's a bit more info from The Standard Motor web site.

So what does P1000 mean? A P1000 code means that ALL of the OBD II monitors have not been completed since the ECMâ??s memory has been cleared. It is not necessary to clear the P1000 code unless you are performing a state inspection that requires it to be cleared. This code could also be the result of the customerâ??s driving pattern not permitting all of the OBD II monitors to complete their drive cycle. A Ford OBD II drive cycle is a specific driving pattern which is used to allow the various OBD II monitors to run and be completed. The requirements for the drive cycle to complete are that all â??Tripâ? monitors are completed. A trip is defined as an engine running, vehicle moving, and the â??Tripâ? monitor has been completed. Therefore, if all OBD II trips have been completed, you have successfully completed the OBD II drive cycle. All scanners will display
â??Trip Statusâ? as a â??Yesâ? or â??Noâ?. A â??Yesâ? simply means that a monitor has run. Regarding monitors, 1994 & 1995
Ford vehicles use five separate monitors. 1996 & later vehicles use as many as nine. Each monitor has its own criteria to run and complete. Each monitor is actually a test of a particular systemâ??s ability to meet and stay within operating parameters. When ALL of the monitors have run, the P1000 code will be erased. It is best to refer to the specific modelâ??s manual to determine the exact drive
cycle procedure. When performing a drive cycle, a smooth, steady foot on the accelerator will be to your advantage in completing the cycle. Abrupt speed changes and erratic
changes in TPS voltage will cause the ECM to take longer to complete, and may even abort certain tests. Avoid wide-open throttle, and exercise caution while driving and viewing the scan tool. Most of the scan tools will indicate each
monitorâ??s status, and whether or not it has been completed. Some monitors are run continuously, and as a result will not indicate a completed status. If for some reason a â??tripâ? was not completed during a drive cycle, the ECM will not need to re-run all of the monitors. It will begin where it had left off, so it is not necessary to repeat the entire process. With OBD II if you perform a repair and want to verify that you did repair the vehicle, you must keep in mind: the systemâ??s criteria for setting a code, and whether the ECM is looking for two consecutive faults. If
this is the case, then itâ??s mandatory to view the monitorâ??s status and make sure itâ??s completed. Donâ??t rely on the MIL light, because it may take two trips to come on, and that second trip will be when the customer is driving the vehicle.
Mike Nieto-
Ford Specialist

Hope this helps some.



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