AFM replacment options

pandrade · 01-31-2013, 03:31 PM

well thanks for your insght cre, out of curiosity is a bad afm something common in the 7m gte or (im assumeing) age and mileage like any other part

cre · 01-31-2013, 11:53 PM

The 7M-GTE's KVAFM isn't a "wear component" per se but they use a very sensitive optical sensor and are VERY delicate. There are a number of factors which contribute to their demise including improper handling and/or servicing and fogging of the optics.

The 7M-GE's VAFM IS a "wear component" and should be replaced about as often as the TPS which uses the same type of internal mechanisms to generate it's signal. How often these components may need to be replaced will depend on how the vehicle is driven and how varied the operating conditions are. From what I've seen personally they're almost always out of spec by the time the timing belt is changed. The TPS on the GTE isn't an exception to this.

01-31-2013, 03:31 PM	#1
pandrade 12psi boost Join Date: Mar 2011 Location: fort myers florida Posts: 345	well thanks for your insght cre, out of curiosity is a bad afm something common in the 7m gte or (im assumeing) age and mileage like any other part __________________ 1987 7m-gte R-154, SS braided clutch line, full 3in exshaust,aluminum radiator,full throttle gen 2 whith GM 3 inch mass air flow,13lbs flywheel, and more to come

01-31-2013, 11:53 PM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The 7M-GTE's KVAFM isn't a "wear component" per se but they use a very sensitive optical sensor and are VERY delicate. There are a number of factors which contribute to their demise including improper handling and/or servicing and fogging of the optics. The 7M-GE's VAFM IS a "wear component" and should be replaced about as often as the TPS which uses the same type of internal mechanisms to generate it's signal. How often these components may need to be replaced will depend on how the vehicle is driven and how varied the operating conditions are. From what I've seen personally they're almost always out of spec by the time the timing belt is changed. The TPS on the GTE isn't an exception to this. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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