RocketQjQ

Ok guys, got another one for ya. My neice's 2002 Mazda Tribute keeps dying Intermittently. Sometimes when first starting, sometimes while driving freeway or even at stop signs. Always starts back up so I'm thinking Electrical?? Maybe a cracked computer board. She's taken it to 4 different garages, including the dealership and has had just about everything replaced from coils, to plugs, Vap valve, to alot of other items and she's running out of patience and money. My son has a RX8 and I've managed to solve all his mechanical problems, solely with the help of this forum. I had a Beemer once, that had the same problems and it was a hair line crack in the computer board. So...any thoughts gents??

I tried posting on the Mazda Tribute forum but it won't let me post any new threads.

Any help would be greatly appreciated and help keep another Mazda owner.

Thanks....Rocket

dannobre

iTrader: (3)

Crank or cam sensor?

j9fd3s

if you've done everything else with the tribute; coils, plugs etc. do a compression test, and if it passes its probably the ECU.

Mazmart

iTrader: (12)

Is the engine light on?

Paul.

HiFlite999

iTrader: (2)

Next time include the basics. Engine/Transmission/Miles etc.
Or search. Ford Escape is the same thing:


02-8-6 DRIVEABILITY - INTERMITTENT ENGINE QUIT OR IDLE DIP - NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT - VEHICLES EQUIPPED WITH 3.0L DURATEC ENGINE ONLY

Publication Date: APRIL 22, 2002

FORD: 2001-2002 ESCAPE

ISSUE:
Some vehicles equipped with the 3.0L Duratec engine may exhibit an intermittent engine quit condition. This is usually a one time event during closed throttle deceleration with no Diagnostic Trouble Codes (DTCs) and no Malfunction Indicator Lamp (MIL). The engine will restart immediately.

ACTION:
When normal diagnostics cannot pinpoint the root cause, refer to the following Driveability Checklist for details.

SERVICE PROCEDURE
With the transmission in Park, the engine should be at idle at approximately 750 RPM, and the engine temperature should be at least 88°C (190°F). All accessories and the engine cooling fan should be off. Using only WDS version B17.1 or later, verify that Idle Air Control (IAC) duty cycle is between 32%-40% with no purge flow. If IAC duty cycle is within specification, then proceed to Step 2 now. If IAC duty cycle is out of specification, replace IAC with part YF1Z-9F715-AA. Verify that IAC duty cycle is between 32-40% with no purge flow. If IAC duty cycle is within specification after replacing with a new IAC, then proceed to Step 2 now. If IAC duty cycle is still out of specification, replace throttle body with part YL8Z-9E926-DA. Verify corrective action, then proceed to Step 2.
NOTE: ENGINE RPM WILL SLOWLY RAMP UP. IT IS EXTREMELY IMPORTANT TO CHECK THE IAC DUTY CYCLE WHEN THE RPM IS AT 750 RPM. EVEN 800 RPM IS TOO HIGH FOR CHECKING IAC DUTY CYCLE UNDER THESE CONDITIONS.

For vehicles sold in the U.S. and Canada perform the following: If the vehicle was built on or after 1/16/2002, then proceed to Step 4 now. If not, reprogram PCM with WDS version B17.1 or later. Only use WDS version B17.1 or later during this reprogramming. Some 2001 model year PCMs cannot be reprogrammed and must be replaced. This is determined by the MPC # located in upper left corner of the barcode on the PCM. If the PCM is an MPC 160, then replace with part 1U7Z-12A650-AXA and reprogram with WDS version B17.1 or later. If the PCM is MPC 161, then just reprogram with WDS version B17.1 or later. Verify latest calibration was successfully reprogrammed. WDS should show latest calibration level as 1U7Z-12A650-AXB. Proceed to Step 4.
For vehicles sold in Mexico perform the following: If vehicle was built on or after 1/16/2002 then proceed to Step 4 now. If not, reprogram the PCM with WDS version B17.15 or later. Only use WDS version B17.15 or later during this reprogramming. Some 2001 model year PCMs cannot be reprogrammed and must be replaced. This is determined by the MPC # located in upper left corner of the barcode on the PCM. If the PCM is an MPC 160, then replace with part 1U7Z-12A650-AZA and reprogram with WDS version B17.15 or later. If the PCM is MPC 161, then just reprogram with WDS version B17.15 or later. Verify latest calibration was successfully reprogrammed. WDS should show latest calibration level as 1U7Z-12A650-AZB. Proceed to Step 4.
With the transmission in Park, the engine should be at idle at approximately 750 RPM, and the engine temperature should be at least 88°C (190°F). All accessories and the engine cooling fan should be off. With WDS version B17.1 (U.S.) or B17.15 (Mexico) or later, determine if the Evaporative Vapor Management (EVAPVM) duty cycle stops increasing and remains at 95-100% while FTP holds at approximately 2.6 volts. If this occurs, replace the EVAPVM valve with part number YL8Z-9C915-AA. If EVAPVM is functioning correctly, the duty cycle should increase to 84-100% with the FTP decreasing to approximately 2.2 volts and then recycle back to 0% duty cycle while FTP holds at approximately 2.6 volts. Do not replace the EVAPVM valve. Verify corrective action, then proceed to Step 5.
With the transmission in Park, the engine should be at idle at approximately 750 RPM, and the engine temperature should be at least 88°C (190°F). All accessories and the engine cooling fan should be off. With WDS version B17.1 (U.S.) or B17.15 (Mexico) or later, if EVAPVM drops to 0% from 60 - 80% (premature purge shutoff), check for an obstructed vent line. This condition may be accompanied by a sudden RPM drop while idling. The premature purge shutoff is caused by the tank not reaching a pre-specified vacuum state. To clear the possible obstructed vent line, disconnect the vent line in the evaporative emissions system from the check valve side (check valve part # is YL8U-9C915-AB). This connection is located just forward of the evaporative emissions canister assembly, underneath the vehicle in the area of the driver side rear seat. Using shop air, blow the vent line from the check valve side forward (towards the brake booster). In the past, spiders have been known to construct webs in vent lines so handle with caution. Possible obstructions in the vent line can prevent the evaporative emissions system from purging properly, and in some cases stalling occurs. Verify corrective action, then proceed to Step 6.
If the Electronic Engine Control (EEC) relay has stamped lettering, proceed to Step 7 now. If the EEC relay has white lettering printed on the top surface, replace with a new Hella service relay that is all black and has stamped lettering on the top surface. Both the new Hella service relay and the old relay have the same part number (FOAZ-14N089-A). Make sure the relay you are installing has stamped lettering. For location, use 2001 Wiring Diagram sections 303-07B-00-1 Connector C1016, 700-06-00-37 Battery Junction Box. Proceed to Step 7.
Ask the customer if they have significant weight (approximately 9 oz or more) hanging from the key ring while the keys are in the ignition. If they do, and the engine quits while traveling over bumps, the key ring may move the ignition cylinder out of the Run position and stop the engine. When this occurs, all gauges immediately shut off (fuel reads "E", tachometer goes to zero, speedometer goes to zero immediately). It is recommended that the customer attach fewer keys to the key ring that retains the vehicle ignition key. Proceed to Step 8.
Road the test vehicle long enough to experience 3 closed throttle decelerations from approximately 40 mph down to 10 mph. Use scan tool to examine engine RPM during test. Ensure there are no engine RPM dips below 680 RPM.

PCM CALIBRATION INFORMATION
Application Old Part Number (-12A650-) Tear Tag New Part Number (-12A650-) Old Calibration New Calibration NGS/WDS Qualifier
2001MY 3.0L ESCAPE - FORD 1U7A-AXA ATF1 1U7A-AXB 0M11A30511 0M11A30512 WDS B18.4 Release or later
2001MY 3.0L ESCAPE - CAA 1U7A-AZA ESG1 1U7A-AZB 0M11B30511 0M11B30512 WDS B18.4 Release or later
2002MY 3.0L ESCAPE - FORD 2L8A-AC BUS3 2L8A-AD 2M11A30506 2M11A30510 WDS B18.4 Release or later
2002MY 3.0L ESCAPE - CAA 2L8A-BC ZRZ3 2L8A-BD 2M11B30506 2M11B30510 WDS B18.4 Release or later

Obtain an Authorized Modifications Decal (FPS 8262 - orderable through DOES II, 25/pkg) and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.

AUTHORIZED MODIFICATIONS

THE FOLLOWING MODIFICATIONS HAVE BEEN MADE:
Reprogrammed Powertrain Control Module (PCM) Per TSB 02-8-6



THESE MODIFICATIONS HAVE BEEN APPROVED, AS APPROPRIATE, BY EPA AND CARB.
DEALER NUMBER:------------------------------------------DATE:

CHANGE AUTHORITY:

FPS 8262 9/78 FORD MOTOR COMPANY PRINTED IN U.S.A.

PART NUMBER PART NAME
YF1Z-9F715-AA Idle Air Control Valve
YL8Z-9E926-DA Throttle Body
YL8Z-9C915-AA EVAPVM Valve
FOAZ-14N089-A Electronic Engine Control (EEC) Relay
1U7Z-12A650-AXA Powertrain Control Module (PCM)
1U7Z-12A650-AZA Powertrain Control Module (PCM)

OTHER APPLICABLE ARTICLES:
NONE

WARRANTY STATUS:
INFORMATION ONLY

OASIS CODES:
607000, 607400, 607500, 607600, 607700, 611000, 611500, 614000, 614500, 614600

monchie

^ Damn...you wrote all of that? You really have the time to do that...lol

RIWWP

iTrader: (2)

Yes, HiFlite memorizes every repair procedure for every car made and can type them up on command. It's why he is awesome.

HiFlite999

iTrader: (2)

^ What he said.

Chad D.

iTrader: (19)

LOL! and he doesn't use spell check either because he is that awesome!

zoom44

He IS spell checker. when you are typing things they all go through him and he is the one actually suggests the correct spellings

RocketQjQ

Well, we're taking it in next week, to have, yet, another Mech check it out BUT...this time, I'm taking HiFlite's print out with me. I think his write up hit the nail on the head or thumb but close enough to resolve the problem. Hmmm...with all the political views on Facebook, I'm thinking maybe Congress needs a Forum and....run by only Smart Guys. haha

HiFlite999

iTrader: (2)

^ My spelling may be good, but my thumbs are in constant danger near hammers.

RIWWP

iTrader: (2)

You are sticking a thumb out right there. Careful, might get dangerous....