|
|
|
#1
|
|||
|
|||
Head Lamps Dip on Acceleration
1994 E420
I installed Euro Lamps last summer and recently added a vacuum adjustment control. I've checked my lines and connections... none are leaking. |
#2
|
|||
|
|||
If you have no vacuum leaks in the system, the check valve in the vacuum supply circuit needs to be replaced. On acceleration, manifold vacuum drops which is what permits the lights to dip. Further, if the headlight vacuum supply line doesn't have its own check valve I would add one otherwise vacuum leaks from other systems (like a leaking HVAC control system) will drain the vacuum to your headlights on long inclines. Mark
Last edited by hookedon210s; 05-20-2007 at 08:48 PM. |
#3
|
|||
|
|||
Thanks Mark
I'll go ahead and grab a Check Valve and see if that resolves the issue. |
#4
|
|||
|
|||
I believe that the factory installed system used an extra check valve with a separate vacuum reservoir.
|
#5
|
|||
|
|||
Quote:
Adding a check valve reduced the dip. You notice it for moment on acceleration but its for the most part gone. Thanks! |
#6
|
||||
|
||||
early systems did use a reservoir, i had posted a schematic a few years ago, but cannot find it now, the later versions omitted the reservoir and used a special vacuum valve. let me know if you need a part number for the valve,
__________________
1967 250 S 1967 280SE 1968 250S 1971 280 SE 1973 220 1974 280 S 1975 450 SEL 1976 220 D 1979 300SD 1983 300 SD 1985 230 TE euro 1986 280SL 1986 500 SEL euro 1986 190E 2.3 1990 300 SE 2003 C230 K 2004 C230 K 1987 560SEL 1987 300SDL now in canada 2005 C230 1998 C43 AMG Sold to DON 1993 190E 2.6 300TD Former daily driver Totaled current: R320 CDI Ram 2500 Cummins |
#7
|
||||
|
||||
Find an Areo Star (ford) they have a small plastic vacuum tank by the a/c system passenger side rip it out and in stall it in your system you will have it all then.
|
Bookmarks |
|
|