This is topic crappy idel in forum Tech Talk at Northern California Ford Owners  .


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Posted by SSF 50 (Member # 7219) on :
 
Stock 90 5.0 Stang
Having a shitty / rough idel but when I unplug the mass air, it idels perfect, I'm thinkin its a bad mass air sensor but don't have anymore lying around 2 try it, wanna c Wat u guys think it can b? No check engine light ( only when I have mass air unplugged) still put code reader on & it says o2s running lean, but figure its saying that cause mass air unplug but??

It's always ideled perfect then next day BAM!
 
Posted by copcar (Member # 10113) on :
 
Have you cleaned the mass air meter filaments? Are you running an aftermarket air filter and if so have you recently oiled it?
 
Posted by SSF 50 (Member # 7219) on :
 
quote:
Originally posted by copcar:
Have you cleaned the mass air meter filaments? Are you running an aftermarket air filter and if so have you recently oiled it?
I sprayed mass air cleaner in plug & sensor.. has stock air box
 
Posted by DIRTY SALLY (Member # 7845) on :
 
sounds like the air meter is bad [Confused]
 
Posted by SSF 50 (Member # 7219) on :
 
put another sensor on & seem 2 help 4 a minute then back 2 cappy idel [Frown] ... unplug mass air & its beautiful [Confused] [Confused]
 
Posted by 88FOX (Member # 9969) on :
 
quote:
Originally posted by SSF 50:
put another sensor on & seem 2 help 4 a minute then back 2 cappy idel [Frown] ... unplug mass air & its beautiful [Confused] [Confused]
i got a 19lb maf you can try.. textd u figure thats faster

[ January 26, 2012, 12:14 AM: Message edited by: 88FOX ]
 
Posted by SSF 50 (Member # 7219) on :
 
quote:
Originally posted by 88FOX:
quote:
Originally posted by SSF 50:
put another sensor on & seem 2 help 4 a minute then back 2 cappy idel [Frown] ... unplug mass air & its beautiful [Confused] [Confused]
i got a 19lb maf you can try.. textd u figure thats faster
good lookin...... really thinkin its not the mass air cause its doin the complete opposite, runnin better with it unplugged when it should b making it worse, im stumped rite know [Confused]
 
Posted by copcar (Member # 10113) on :
 
A bad maf can act in just the way you are describing. Also a dirty meter will do the same. Your computer has a table for defective or malfunctioning meter which it is defaulting to when you unplug the meter. Stock maf?
 
Posted by SSF 50 (Member # 7219) on :
 
quote:
Originally posted by copcar:
A bad maf can act in just the way you are describing. Also a dirty meter will do the same. Your computer has a table for defective or malfunctioning meter which it is defaulting to when you unplug the meter. Stock maf?
Stock maf, its all stock except exust... Also has full fresh tune-up... It idles around 600 & can hear it rough, & when u start 2 give it little gas its not smooth / responsive, but once u get past 1000 its all smooth, when the maf is unplugged it idles perfect @ 900 & revs smooth...
So it pretty much still runs good but very low idle, don't wanna jus raise the idle, cause there's something wrong!
 
Posted by SSF 50 (Member # 7219) on :
 
Put a known good maf, & same shit crappy / low idle [Confused]
 
Posted by SSF 50 (Member # 7219) on :
 
Figured it out [Big Grin] ... it was the vacuum from the smog canister 2 upper intake...
 
Posted by FordRyderz510 (Member # 6771) on :
 
quote:
Originally posted by SSF 50:
Figured it out [Big Grin] ... it was the vacuum from the smog canister 2 upper intake...
D FTW! Good stuff bro
 




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