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Sad Valve Stuck Closed?


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2 replies to this topic

#1
Justin181

Justin181
  • Drivers
  • 39 posts
Joined: 22 Jun 2017
  • Name:Justin Hincks
  • Location:Solihull, West Midlands
Can the sad valves get stuck closed?? If this is the case will the car run too rich on startup?? As wont the ecu put more fuel in when engines cold but because the sad wont open the car wont have enough air for thd fuel

#2
Anthony

Anthony
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  • 18,744 posts
Joined: 27 Feb 2003
  • Location:Swindon, Wiltshire
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SAD faults are rare, and besides, wouldn't explain your issue - holding the throttle a fraction open would give the same effect as SAD being open given its just a valve to let a little air bypass throttle body.

#3
Justin181

Justin181
  • Drivers
  • 39 posts
Joined: 22 Jun 2017
  • Name:Justin Hincks
  • Location:Solihull, West Midlands
Ok ant.. Im picking my brains with this..
Right heres the scenario ant.. On initial start up.. It wont rev properly.. It splutters and pops and really struggles to rev under 3k.
I had it running up today till fan cut in and , when its hot its alot more free reving. Almost normal..so im thinking its only really overfuelling when cold!
What do you think?