HarleyTechTalk

Technical Forums => General => Topic started by: Terrymcq on February 08, 2020, 09:32:35 AM

Title: Is it safe to clean IAC with MAss Air Flow Sensor Cleaner?
Post by: Terrymcq on February 08, 2020, 09:32:35 AM
I don't want to do more damage than good but I think a problem I have with engine stalling whenever I slow down and down shift is possibly linked to a gummed up IAC and if safe a cheap fix is to spray the gunk out. I'm no expert which is why I'm asking for help. I used to clean automotive carbs all the time with ether/carb cleaners but I'm new to working on my bike (only been riding a couple years). I am concerned if spray cleaners could damage small IAC or push gunk past seals inside which it you don't want contaminants getting past.

Thanks for any help.
Title: Re: Is it safe to clean IAC with MAss Air Flow Sensor Cleaner?
Post by: Ohio HD on February 08, 2020, 09:43:35 AM
No problem cleaning them.


https://www.crcindustries.com/products/mass-air-flow-sensor-cleaner-11-wt-oz-05110.html

Title: Re: Is it safe to clean IAC with MAss Air Flow Sensor Cleaner?
Post by: rigidthumper on February 09, 2020, 09:24:41 AM
I open the butterfly, and stuff a red rag into the intake, to catch the excess. I use Q-tips and CRC products to clean the IAC pintle and opening. When done, remove the red rag and and any residue, and slow cycle the key switch a couple times (with the run/stop switch in the run position) to reset IAC Zero.

The other thing that can cause an issue with stalling on slowdown/stopping is the Vehicle Speed Sensor. Might pull it and see if it's contaminated.
Title: Re: Is it safe to clean IAC with MAss Air Flow Sensor Cleaner?
Post by: hogpipes1 on February 09, 2020, 10:24:51 AM
Quote from: Ohio HD on February 08, 2020, 09:43:35 AM
No problem cleaning them.


https://www.crcindustries.com/products/mass-air-flow-sensor-cleaner-11-wt-oz-05110.html

Good video and crc products. :up:
Title: Re: Is it safe to clean IAC with MAss Air Flow Sensor Cleaner?
Post by: Terrymcq on February 09, 2020, 02:57:03 PM
Rigid, thanks, i am replacing the speed sensor and i will clean the IAC. I also had a code come up after i got my bike to limp home for the crank position sensor and am changing that too.
Title: Re: Is it safe to clean IAC with MAss Air Flow Sensor Cleaner?
Post by: Scooterfish on February 10, 2020, 08:01:55 AM
Good video  :up: The 2:00-2:20 minute mark is very important. NEVER use carb or brake cleaner .