I have a 2002 E150 van - that runs fine. I had the codes downloaded and have an P1151 and P1518 code. Where should I look and where should I start? I have done a lot of mechanical work but never touched this van. Any instructions would be a great help.
Disconnect the battery cable ,wait about 4 to 5 hour so that the computer can reset. If the enignee light still come on change the air senor switch, locate on your muffler pipe under the driver side of vechile
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P1518 - Intake Manifold Runner Control Malfunction (Stuck Open)
The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle.
IMRC monitor signal circuit shorted to PWR GND or SIG RTN
Stop, DO NOT replace expensive parts or O2 sensor! Ford Explorer codes p0174 , p0401 , rough idle and check engine light on. First thoroughly check all of the hoses and elbows connected to the intake and EGR (vacuum system) for splits, cracks, holes or tears, this could quickly cause these codes and fixes for less than $10. Check all connectors and the EGR valve sensor it could have a crack as well, inspect thoroughly because a split sensor could appear attached to the vacuum hoses but hoses could just be sitting there not actually attached due to a split or crack. This was my problem replaced the EGR valve sensor and the two little vacuum hoses attached to them for $50-60 with in stock parts at the local parts store. Took less than 10 minutes to replace and is easily accessible, the check engine light turned off immediately without having to reset the codes by disconnecting the battery, idle became normal and fuel efficiency better. If you have THOROUGHLY inspected every hose, connector and elbow and found no issues, clean the MAF with electrical contact cleaner ( let dry) and clean the EGR with carbon cleaner. A dirty MAF or EGR could also cause these codes to pop up. If this still doesn't work, then consider replacing the EGR, if that isn't it then try the O2 sensor. Good luck!
Ok this is either a shorted wire or bad connector or just plain a bad 02 sensor or a stuck injector or bad PCV needs cleaned. You stated it runs great i would go with Bad 02 sensor first or check for possible exhaust leak and last check for bad converter.
When ever the check engine light comes on, it tells you that the computer generated an error code, which could be minor like you didn't get the gas cap on tight enough to impending complete failure.
Most chain auto parts stores will read your error codes for free - make sure you write down the codes in the order they come off. After you get the codes, then it will tell you where to look in your system for problems.
Change the Mass Air Flow sensor.Or the the Volume Air flow sensor.Also replace the ( IAC ) Idle Air Control. There is no code P1518 are you sure they wrote it down for you correctly? I just had my Library of codes updated last week and it is not on the list. After all repairs are made make sure you have the Diagnostic Trouble Codes Erased from the on board computers memory. This will reset the check engine light and keep it from comming on again for thoes codes.If it does come on again and it relays more DTC you can ask me for further help through the Reply Window. Good Luck and have a good XMASS.
Hello! A P1518 is a Intake Manifold Runner Stuck Open...It is a device that is held in place by three bolts and is located on the front of the intake manifold...There are two Actuator Rods...A 4 wire connector plugs into the top...Pin #1=Black (ground)...Pin #2=Dark Blue/Light Green...Pin #3=Red...Pin #4=Dark Blue/Yellow...
Check the connector for loose, frayed, contaminated, or open wires...However the Actuator is more than likely jammed with carbon...
those two codes are for the o2 sensors. both are the upstream sensors on the front and rear banks. so they are desinagted bank 1 sensor 1 and bank 2 sensor 1. them most common cause for this is faulty o2sensors , bad gas and of a poor running engine. so if your car runs good (no misfire) and gas is ok then replace the o2sensor witch is the very most common cause.
Some 2001-2003 F-150, 2004 F-150 Heritage and 2001-2003 E-150/250
vehicles equipped with a 4.2L engine may exhibit the malfunction
indicator lamp (MIL) on with diagnostic trouble codes (DTCs) P1131
and/or P1151 (system too lean bank 1 or 2). This condition may be due
to leaking isolator bolts/port gaskets in the upper-to-lower intake
manifold mounting area. This condition is sometimes intermittent and
may not be apparent on a warmed-up engine.
Perform a self test. If DTC P1131 and/or P1151 are the only codes
stored in the powertrain control module (PCM) proceed to Step 2. If any
additional DTCs are present, follow normal diagnostic procedures found
in the PC/ED Manual.
Remove the upper intake and replace only the port gaskets (9H486)
and isolator bolt assemblies (9S479). The new isolator bolt assemblies
use a rubber material that is green in color, do not install the old
isolator bolt assemblies with the black rubber material. Do not replace
any other intake parts or gaskets. While the upper intake manifold is removed, check the exhaust gas
recirculation (EGR) orifices that are pressed into each primary port of
the lower intake manifold. If any of the orifices are plugged with
soot, clean and unplug them with a pick and solvent.
PART NUMBER PART NAME
1L3Z-9H486-AA Port Gasket
3F2Z-9S479-AA Isolator Bolt