|
|
|
|
|
#1
10-22-2007, 08:19 AM
|
|||
|
|||
|
Quick ICV question '86 560SL 117 engine
If I unplug the ICV electrical connector, engine idling, and no change in the idle speed occurs, whether the engine is cold or warmed up, does this confirm that the ICV is bad and should be replaced (or cleaned)?
Engine idle was previously doing quite a bit of 'hunting' (speed up & down) at cold idle. I found 1 vacuum line disconnected, 1 large rip in the rubber gasket under the air intake (repaired with silicone sealant for now).
__________________
1986 560SL 2002 Toyota Camry 1993 Lexus 
|
|
#2
10-22-2007, 04:14 PM
|
||||
|
||||
|
Tell us first what is the RPM while the car is idling.
__________________
Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D 380SE 1984 <------- Totaled by flipping accident 300SE 1988 <------- Sold Volvo S70 2000 <---- 4 family Opel Omega 2002 <-- 4 family 560SEC 1989 <------ Sold 560SEL 1990 <------ Sold 560SEL 1991 <------ 4 my mother 560SEL 1989 <------ Sold 600SEL 1992 <------ Current
|
|
#3
10-23-2007, 09:24 AM
|
|||
|
|||
Cold start, idles at 1,000, then drops after a minute or so to about 750. I pulled the connector while engine still relatively cold, and the idle surged up to 1,000 again. Plugged it back in and it drops to 750. Still minor hunting/surging. However, unplugging the ICV when the engine is warmed up seems to have no effect. Normal?
__________________
1986 560SL 2002 Toyota Camry 1993 Lexus Last edited by donbryce; 10-25-2007 at 08:48 AM. Reason: OOPS, RPM numbers were wrong. Should be 10 X 100 and 75 X 100, not 1000
|
|
#4
10-23-2007, 10:42 AM
|
|||
|
|||
|
not normal,speed should go to 1500 or so.sounds like your icv is very dirty or jammed.
__________________
David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
|
|
#5
10-23-2007, 03:51 PM
|
||||
|
||||
|
If that happened to my car I'd clean the ICV with a carburetor cleaner spray such as AC Delco.
__________________
Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D 380SE 1984 <------- Totaled by flipping accident 300SE 1988 <------- Sold Volvo S70 2000 <---- 4 family Opel Omega 2002 <-- 4 family 560SEC 1989 <------ Sold 560SEL 1990 <------ Sold 560SEL 1991 <------ 4 my mother 560SEL 1989 <------ Sold 600SEL 1992 <------ Current
|
 |
| Bookmarks |
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
