|
|
|
#1
|
|||
|
|||
My brother in laws 1973 450SL has devloped a unique problem. When the engine is started and put in drive or reverse, the engine rpms's suddenly drop way down but without the transmission really trying to move the car. Think of it like you left the parking brake on. It's just kind of bogging and bucking the engine without really moving.
Now if he puts it in park, and revs it slightly, the car will seem to want to creep forward! Not drastically, but if it had a manual tranny, I'd say someone was slipping the cluth heavily. Any suggestions? His worst fear is the tranny or torque converter is gone. Another friend said check all vaccum lines, maybe somethings not engaging as it should. Thanks for any help! |
#2
|
|||
|
|||
I know this is sort of basic, but I have seen low or high fluid level cause weirdness like this. Be sure when cold and level, the fluid is 10mm below the bottom line. When warm, it should be at the bottom line, not to exceede the top one.
------------------ Benzmac: 1981 280GE SWB 1987 16V ASE CERTIFIED MASTER AUTO TECHNICIAN SERVICE MANAGER FOR 14 BAY FACILITY MERCEDES SPECIALIST 8 YRS PARTNER IN MERCEDESSHOP.COM |
#3
|
||||
|
||||
surges....
I have had the same problem when i first bought my 450se, ended up being low transmission fluid. Runs great after it was topped off. Give that a shot.
|
#4
|
|||
|
|||
Compressed air in the hydraulic servos will do funny stuff on an auto tranny. Fluid check is the first thing I'd check.
It's possible the tranny is shot, but I'd verify that the fluid and filter are good before worrying about a bad tranny. Peter
__________________
1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs! |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
1986 300E power seat won't move forward and tilt up & forward | jrmd01 | Tech Help | 21 | 03-24-2012 06:11 PM |
Transmission not fully disengaging in neutral and park | 190D22 | Diesel Discussion | 12 | 01-20-2004 12:29 PM |
'73 450sl engines surges at idle until up to temp | Chaosmosis | Tech Help | 2 | 07-25-2003 11:39 AM |
while in PARK - motor surges forward ... | mxnz | Diesel Discussion | 1 | 04-16-2003 02:10 PM |
91 300SEL stuck in PARK gear selector position | Mike Richards | Tech Help | 3 | 01-12-2002 05:41 PM |