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+--- Thread: 1991 300d almost stalls please help (/showthread.php?tid=5383)
1991 300d almost stalls please help - 300dw124 - 02-28-2014
Im new here I just purchased a 1991 mercedes 300d 2.5 my issue is when I let off the fuel pedal the car it almost stalls sometimes it will shut off too. Can anyone help me anyone else ever have this issue?
RE: 1991 300d almost stalls please help - Stevo-trendy - 02-28-2014
Air leak ? Check your fuel pipes the clear ones go hard & brittle with age & split letting air into the system , also worth taking the fuel tank strainer out & cleaning it if it hasn't already been done
RE: 1991 300d almost stalls please help - 300dw124 - 02-28-2014
Thnak you I will take a look and see if thats the cause
RE: 1991 300d almost stalls please help - Duncansport - 02-28-2014
Does it always idle low? Id start by checking the overvoltage relay and it's fuse mounted on top. It is located behind the battery, red with a 10A fuse in the top.
RE: 1991 300d almost stalls please help - 300dw124 - 02-28-2014
It idles just above the 5
http://youtu.be/6Am-od9sncU this is a video of what its doing
RE: 1991 300d almost stalls please help - Duncansport - 03-01-2014
Idles to low, check the overvoltage relay. If it's ok check the elr for power.
RE: 1991 300d almost stalls please help - 300dw124 - 03-01-2014
Where are they located
RE: 1991 300d almost stalls please help - Duncansport - 03-01-2014
(03-01-2014, 11:49 AM)300dw124 Where are they located
behind the battery clipped to the ABS controller bracket
RE: 1991 300d almost stalls please help - 300dw124 - 03-02-2014
I checked everything the lines are good the overvoltage relay is good still havnt found the elr. Im starting to loose hope
RE: 1991 300d almost stalls please help - Duncansport - 03-02-2014
Elr is the red hoocky puck looking thing sticking off the back of the injection pump. It has a two wire plug on the top that controls the idle
RE: 1991 300d almost stalls please help - Tito - 03-02-2014
Could be me but isn't that thing overheated? I never ever got mine above 80.
RE: 1991 300d almost stalls please help - 300dw124 - 03-02-2014
I hope its not over heating I dont know the normal operating time
RE: 1991 300d almost stalls please help - Duncansport - 03-03-2014
(03-02-2014, 10:38 PM)300dw124 I hope its not over heating I dont know the normal operating time
Did you check the ELR yet
Operating temp is between 80-100C on the gauge.With the engine running there should be a ground and some sort of power at the connector for the elr.
RE: 1991 300d almost stalls please help - 300dw124 - 03-03-2014
Thank you duncansport the idle was the problem now its ruining alot better
RE: 1991 300d almost stalls please help - Duncansport - 03-03-2014
(03-03-2014, 01:54 PM)300dw124 Thank you duncansport the idle was the problem now its ruining alot better
glad to hear! now time for some pump work, turbo, exhaust manifold and intake manifold!
RE: 1991 300d almost stalls please help - 300dw124 - 03-04-2014
What kinda stuff can I do too the intake manifold and exhaust manifold to upgrade then and what turbo can I use?
RE: 1991 300d almost stalls please help - Duncansport - 03-04-2014
(03-04-2014, 12:17 AM)300dw124 What kinda stuff can I do too the intake manifold and exhaust manifold to upgrade then and what turbo can I use?
PM, i have a bunch of modified OM602 parts (intake with external inlet, exhaust manifold with external waste gate and a T3 flange)
RE: 1991 300d almost stalls please help - 300dw124 - 03-04-2014
Pm sent