Surging Idle
Thread Starter
Teching In
Joined: Jan 2009
Posts: 17
Likes: 0
From: Stillwater, Oklahoma
Surging Idle Just fixed cracked heads on a 93 lt1 that i bought. I was wondering if anyone had a vacuum hose routing on not only the emissions side but I noticed that there were two hoses running to the lower front of the motor not sure what they are supposed to go to. The car has a surging idle when the car gets warmed up at a stoplight, I think it is either a vacuum leak or vacuum hose going to the wrong port. Any sugestions?
Just fixed cracked heads on a 93 lt1 that i bought. I was wondering if anyone had a vacuum hose routing on not only the emissions side but I noticed that there were two hoses running to the lower front of the motor not sure what they are supposed to go to. The car has a surging idle when the car gets warmed up at a stoplight, I think it is either a vacuum leak or vacuum hose going to the wrong port. Any sugestions?
http://shbox.com/1/1995_evap.jpg
AIR & EGR ('93):
http://shbox.com/1/1993_air_egr.jpg
http://shbox.com/1/air_pump_recall.jpg
Also, check your intake elbow for cracks.
Same with the rubber PCV hoses:
http://shbox.com/1/pcv_pipe.jpg
Thread Starter
Teching In
Joined: Jan 2009
Posts: 17
Likes: 0
From: Stillwater, Oklahoma
There is one small hose with a couple of check valves in it that goes to the bottom of the engine, then there is another small one that runs behind the water pump and looks like it connects onto the timing cover
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Verdad Gallardo Thread Starter
Teching In
Joined: Jan 2009
Posts: 17
Likes: 0
From: Stillwater, Oklahoma
Yeah that is exactly it, like i said just bought the car in december and have no idea what has been done or changed on it. the only difference is that i dont have a place to connect that hose to me air intake hose.
You mean the little blue plastic elbow that plugs into a little hose in the big black intake elbow? All you have to do is drill a little hole in the elbow.
