[superk]

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Hi Guys, we have a 2008 GL1800 over at the local Honda dealer (28,000 miles)..



The bike developed an erratic idle with some popping out the exhaust after a test drive. When under way the bike seem to run fine, but at idle NO....



The 1,2,4,5 cylindersare running rich and 3,6 are running lean.. ???



The dealer said that after resetting the main ECU, the codes that return are:



Map Sensor out of range

Fuel injector out of range





The shop has done numerous tests, etc and no change.





Fuel Pressure

Coil / Timing

Spark

Fuel Sample

Plugs

All wiring harness traced for proper connections and damage

Compression test OK




Replaced the PGM Fuel Controller Module (proper name?) .. with no positive change...





From reading other posts here it could possibly be a vaccuum leak or main ECM? ..



If anyone has experienced this or has any suggestions for proceeding, please let me know. Thanks!

 

[GWEddie]

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"Map Sensor out of range

Fuel injector out of range"

That means a bad injector or air flow meter.

 

[choppas]

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Has the dealer tried resetting the ECM, by disconnecting the battery and reconnecting?

 

[superk]

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[align=left][/align. The dealer ordered a new map sensor for air box. Not installed yet. They did the battery disconnect to reset ecm. Will not have more word till sensor is installed next week.

 

[BenMilner]

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GWEddie wrote:

"Map Sensor out of range

Fuel injector out of range"

That means a bad injector or air flow meter.

The map Sensor is the air flow meter, and they do sometimes fail.

 

[jnel57]

imported post

The Map sensor (manifold absolute pressure) can be the problem, but my guess would be a vacuum leak related to #3 and #6 cylinder. the sensor being bad will either make all cylinders lean or all cylinders rich. has the dealer checked the engine vacuum ?. The reason for the two faults is there probably is a vacuum leak which makes the map sensor out of parameters and the ECM cannot energize the injector long enough to over come the lean condition which would put the injector out of parameters