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evaporator pressure sensor 2006 colorado

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1993 Ford Crown Victoria V8-281 4.6L SOHC Engine – Lean Driveability Symptoms Manual

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1. Look at the BARO PID. Refer to the Barometric Pressure Reference Chart in this article. At sea level, BARO should read about 159 Hz (29.91 in. Hg). As a reference, Denver, Colorado at 1524 meters (5000 ft.) altitude should be about 144 Hz (24.88 in.Hg). Normal learned BARO variability is up to +/- 6 Hz (+/- 2 in. Hg.). If BARO indicates a higher altitude than you are not at (7 or more Hz lower than expected), you may have MAF contamination. If available, Service Bay Diagnostic System (SBDS) has a Manifold Absolute Pressure (MAP) sensor that can be used as a barometric pressure reference. Use “MAP/BARO” test under “Powertrain,” “Testers and Meters.” Ignore the hookup screen. Connect GP2 to the reference MAP on the following screen. 2. On a fully warmed up engine, look at Long Term Fuel Trim at idle, in Neutral, A/C off, (LONGFT1 and/or LONGFT2 PIDs). If it is more negative than -12%, the fuel system has learned lean corrections which may be due to the MAF sensor over-estimating air flow at idle. Note that both Banks 1 and 2 will exhibit negative corrections for 2-bank system. If only one bank of a 2-bank system has negative corrections, the MAF sensor is probably not contaminated. 3. On a fully warmed up engine, look at MAF voltage at idle, in Neutral, A/C off (MAF V PID). If it’s 30% greater than the nominal MAF V voltage listed in the Powertrain Control/Emissions Diagnosis (PC/ED) Diagnostic Value Reference Charts for your vehicle, or greater than 1.1 volts as a rough guide, the MAF sensor is over-estimating air flow at idle. 4. If at least tow of the previous three steps are true, proceed to disconnect the MAF sensor connector. This puts the vehicle into Failure Mode and Effects Management (FMEM). In FMEM mode, air flow is inferred by using rpm and throttle position instead of reading the MAF sensor. (In addition, the BARO value is reset to a base/unlearned value.) If the lean driveability symptoms go away, the MAF sensor is probably contaminated and should be replaced. If the lean driveability symptoms do not go away, go to the PC/ED Service Manual for the appropriate diagnostics.

2004 Honda Element EX ROCKER ARM OIL PRESSURE SWITCH (VTEC OIL PRESSURE SWITCH) CIRCUIT HIGH VOLTAGE MANUAL

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1. Check the engine oil level. Is the level OK? YES- Go to step 2 . NO- Adjust the engine oil to the proper level, then go to step 14 . 2. Turn the ignition switch ON (II). 3. Clear the DTC with the HDS. 4. Do the VTEC TEST in the INSPECTION MENU with the HDS. Is the result OK? YES- Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the rocker arm oil pressure switch (VTEC oil pressure switch) and the ECM/PCM. NO- Go to step 5 . 5. Check the result of step 4 . * Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) Failure * Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) Open * Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) SIG Line Open * Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) GND Line Open Is the test result any of the above? YES- Go to step 6 . NO- Check for poor connections or loose terminals at the rocker arm oil pressure switch (VTEC oil pressure switch). If it is OK, replace the rocker arm oil control solenoid (VTEC solenoid valve) (see step CMP SENSOR A REPLACEMENT ), then go to 14 . 6. Turn the ignition switch OFF. 7. Disconnect the rocker arm oil pressure switch (VTEC oil pressure switch) 2P connector. 8. Check for continuity between rocker arm oil pressure switch (VTEC oil pressure switch) 2P connector terminals No. 1 and No. 2 Fig. 16: Checking Continuity Between Rocker Arm Oil Pressure Switch 2P Connector Terminals Courtesy of AMERICAN HONDA MOTOR CO., INC. Is there continuity? YES- Go to step 9 . NO- Replace the rocker arm oil pressure switch (VTEC oil pressure switch) (see ROCKER ARM OIL PRESSURE SWITCH (VTEC OIL PRESSURE SWITCH) REMOVAL/INSTALLATION ), then go to step 13 . 9. Turn the ignition switch ON (II). 10. Measure voltage between rocker arm oil pressure switch (VTEC oil pressure switch) 2P connector terminal No. 1 and body ground

FORD HIGH PRESSURE SYSTEM DIAGNOSTICS REPAIR MANUAL

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SERVICE PROCEDURE IT IS NOT NECESSARY TO REPLACE THE HIGH PRESSURE PUMP WHEN REPLACING THE A minimum of 3.5 MPa (500 psi or 0.8 volts) ICP is QUICK CONNECT FITTINGS. required before the injectors are enabled. No or low oil in the system, leakage at the injector upper 4. If a leak is identified in the branch tube, use D-rings, high pressure pump quick connect fitting, the following procedure to replace the branch high pressure pump discharge tube, faulty injection tube if the vehicle your working on is a F-Super pressure regulator (IPR), high pressure pump, or Duty or Excursion. For E-Series, the engine branch tube could cause low ICP pressure. needs to be removed to replace the branch tube. When replacing the branch tube, also 1. Perform the revised Powertrain Controls / install the STC bracket kit. Emissions Diagnosis (PC/ED) lead diagnostics Section 4, Hard Start / No Start Diagnostic BRANCH TUBE REPLACEMENT FOR F-SUPER Procedure Tests 10e and 10f. These tests were DUTY AND EXCURSION VEHICLES ONLY revised in January 2006. 1. Remove the transmission. See the appropriate NOTE model year Workshop Manual (WSM), Section 307-01. THE LOW PRESSURE OIL SYSTEM MUST BE WORKING PROPERLY IN ORDER FOR THE HIGH NOTE PRESSURE OIL SYSTEM TO BUILD ICP LEAVE THE FLYWHEEL ON THE ENGINE, AS IT PRESSURE. THIS INCLUDES ADEQUATE WILL MAKE IT EASIER TO TURN THE ENGINE PRESSURE AND GOOD QUALITY PROPERLY OVER TO TOP DEAD CENTER (TDC) AND THE MAINTAINED OIL. TRANSMISSION FLUID DOES NOT NEED TO BE NOTE DRAINED. THIS TSB ONLY APPLIES TO REPLACEMENT OF 2. Set engine at TDC both cylinder number 1 ANY COMPONENT FOUND DEFECTIVE WHILE rocker arms should be loose. See rocker arm PERFORMING PC/ED HARD START / NO START removal procedure in the appropriate online TESTS 10e AND 10f. WSM, Section 303-01C

2005-2006 Toyota Tundra/ Sequoia 4.7L V8 MR Tech Power-flow Intake system Installation Manual

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The installation of this cold air intake does require mechanical skills. Removal of engine covers, air lines and removing several plastic plugs and screws that may be difficult. It is recommended that this system be installed by a professional mechanic. Be sure to disconnect the negative terminal before proceeding. Congratulations! You have just purchased the worlds first tuned intake system. MR Technology, Leading the way! Patent pending (A) and (G) (B) (D) (A) Power-Box contents: POWER-FLOW: An air intake evolution Tools required: 1- 8mm socket 1- 10mm socket 1- 12mm socket 1- Phillips screw driver 1- 8mm nut driver 1- 55mm allen wrench 1- Disc grinder or Dremel (C) (E) Figure 1 Figure 2 Carefully, remove the mass air flow sensor from the air sensor housing to be reused later in the instruc- tions. Unhook three spring clamps from the top air box cleaner. Once the hooks have been removed, continue to detach the air box top from the lower air box cleaner. See fig. 15 for better illustration. Once the nut and bolt have been removed, continue to remove the entire hose clamp. Unplug the electrical harness clip from the mass air flow sensor as shown above. Disconnect the 4mm vacuum line located to the side of the air box cleaner. Unscrew the nut and bolt the hose clamp that secures the hose over the radiator. Loosen the two flange nuts on the engine cover in order to remove the cover. Disconnec the 6mm vacuum hose that will be reused later in the instructions. Page 2 of Part# PF2019 Unscrew the two screws from the mass air flow sensor, shown above. Loosen the hose clamp on the air duct connected to the throttle body. Unplug the crank case breather hose from the air crank case port as shown above. >>> >>>> Figure 3 Figure 8 Figure 7 Figure 6 Figure 11 Figure 10 Figure 9 Figure 14 Figure 13 Figure 12 >>>> Figure 4 Figure 5 Once the flange nuts have been removed, continue to remove the cover from the engine compartment as shown above. >>> >>> >>> >>> >>> >>> The three spring clamps shown above are unhooked from the top air box cleaner (A). Remove the air filter panel once the top has been removed (B). Once the air filter panel is removed, there are three bolts that will be removed in order to detach the lower air box cleaner. Remove the entire lower air box cleaner from the engine compartment. Place the power bands over each end of the silicone elbow. press the short end of the silicone elbow over the throttle body. Once the silicone elbow has been aligned continue to semi-tighten power band over the throttle body end. The first vibra-mount is aligned to the pre-tapped hole located behind the head lamp. The first vibra-mount is now installed as shown above. Screw the second vibra-mount is aligned over the wheel well bracket. The second vibra-mount is now installed as shown above. The stock 6mm hose is removed from the fuel pressure regulator. Press the new 16″- 4mm vacuum hose over the fuel pressure regulator port. Page 3 of Part# PF2019 Figure 15 Figure 17 Figure 16 Figure 20 Figure 19 Figure 18 Figure 23 Figure 26 Figure 25 Figure 22 Figure 21 Figure 24 (B) (A) (A) (A) >>> >>> >>> >>> Both vibra-mounts are now installed, you are now ready to go on to the next step. Place one .462 and a .412 power band over the silicone step hose. Press the 3 3/4″ side over the velocity stack as shown above. The Power box is now sitting flush over the vibra- mounts and a fender washer is placed over each vibra-mount. The last m6 flange nut is placed over the vibra- mount located behind the Power box. The 65mm bolt is tightened with an allen wrench. The assembled power box is lowered into the engine compartment. Align the mounting points on the bracket arms over the vibra-mounts. One 45mm bolt is removed from the top of the box. The bracket is place under the Power box and the 45mm bolt is aligned and screwed back in place as shown above. Remove the 65mm bolt from the velocity stack base. Align the bracket to the hole and insert the 65mm bolt back in place

1998-2003 FORD ENGINE 7.3L DIESEL DI HIGH PRESSURE OIL PUMP LEAK REPAIR MANUAL

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ENGINE 7.3L DIESEL DI HIGH PRESSURE OIL PUMP LEAK ACTION sensor electrical connector. High pressure oil pump leaks at the outlet fittings b. Remove the exhaust back pressure sensor. and/or end plug can be serviced without removing the pump assembly. Replace the O-rings on the 3. Remove the high pressure oil pump reservoir. fittings and the end plug using Kit 2C3Z-9G804-AA. For additional information, refer to Section All three (3) O-rings should be replaced. Apply 303-04 in the appropriate Workshop Manual. liquid thread sealer (included in the kit) prior to WARNING reinstallation. Refer to the following Service Procedure for details. SMOKING OR OPEN FLAME OF ANY TYPE MUST NOT BE PRESENT WHEN WORKING SERVICE PROCEDURE NEAR FUEL VAPOR. NOTE CAUTION BEFORE PERFORMING THE REPAIR THE FUEL SYSTEM CONTAINS PRESSURIZED PROCEDURE, MAKE SURE THAT THE CAUSE FUEL AFTER THE VEHICLE IS SHUT DOWN OF THE LEAK IS CLEARLY ESTABLISHED. AND WILL MAINTAIN THIS PRESSURE FOR A LONG PERIOD OF TIME. NOTE FOR E-SERIES AND F650/750 VEHICLES, 4. Open the fuel/water separator drain valve to FOLLOW THE PROPER HIGH PRESSURE OIL release fuel pressure. Completely drain the fuel PUMP ACCESS PROCEDURE IN THIS filter/water separator assembly. DOCUMENT FOR ACCESS TO THE HIGH 5. Disconnect the fuel supply and fuel return lines PRESSURE OIL PUMP. from the fuel filter/water separator. NOTE 6. Disconnect the two (2) cylinder head fuel FOR SUPER DUTY AND EXCURSION, PROCEED supply lines from the fuel filter/water separator