1991 300d almost stalls please help

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Naturally-aspirated

10

02-28-2014, 02:57 PM #1

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? Huh

300dw124

02-28-2014, 02:57 PM #1

Stevo-trendy

K26-2

41

02-28-2014, 03:58 PM #2

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

Stevo-trendy

02-28-2014, 03:58 PM #2

300dw124

Naturally-aspirated

10

02-28-2014, 04:15 PM #3

Thnak you I will take a look and see if thats the cause

300dw124

02-28-2014, 04:15 PM #3

Thnak you I will take a look and see if thats the cause

Duncansport

Holset

526

02-28-2014, 07:30 PM #4

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.

Duncansport

02-28-2014, 07:30 PM #4

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.

300dw124

Naturally-aspirated

10

02-28-2014, 11:58 PM #5

It idles just above the 5

http://youtu.be/6Am-od9sncU this is a video of what its doing

This post was last modified: 03-01-2014, 12:06 AM by 300dw124.

300dw124

02-28-2014, 11:58 PM #5

It idles just above the 5

http://youtu.be/6Am-od9sncU this is a video of what its doing

Duncansport

Holset

526

03-01-2014, 07:07 AM #6

Idles to low, check the overvoltage relay. If it's ok check the elr for power.

Duncansport

03-01-2014, 07:07 AM #6

Idles to low, check the overvoltage relay. If it's ok check the elr for power.

300dw124

Naturally-aspirated

10

03-01-2014, 11:49 AM #7

Where are they located

300dw124

03-01-2014, 11:49 AM #7

Where are they located

Duncansport

Holset

526

03-01-2014, 03:04 PM #8

(03-01-2014, 11:49 AM)300dw124 Where are they located

behind the battery clipped to the ABS controller bracket

Duncansport

03-01-2014, 03:04 PM #8

(03-01-2014, 11:49 AM)300dw124 Where are they located

behind the battery clipped to the ABS controller bracket

300dw124

Naturally-aspirated

10

03-02-2014, 02:28 PM #9

I checked everything the lines are good the overvoltage relay is good still havnt found the elr. Im starting to loose hope

300dw124

03-02-2014, 02:28 PM #9

I checked everything the lines are good the overvoltage relay is good still havnt found the elr. Im starting to loose hope

Duncansport

Holset

526

03-02-2014, 05:41 PM #10

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

Duncansport

03-02-2014, 05:41 PM #10

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

Tito

Holset

354

03-02-2014, 09:10 PM #11

Could be me but isn't that thing overheated? I never ever got mine above 80.

Tito

03-02-2014, 09:10 PM #11

Could be me but isn't that thing overheated? I never ever got mine above 80.

300dw124

Naturally-aspirated

10

03-02-2014, 10:38 PM #12

I hope its not over heating I dont know the normal operating time

300dw124

03-02-2014, 10:38 PM #12

I hope its not over heating I dont know the normal operating time

Duncansport

Holset

526

03-03-2014, 08:14 AM #13

(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 Huh

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.

Duncansport

03-03-2014, 08:14 AM #13

(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 Huh

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.

300dw124

Naturally-aspirated

10

03-03-2014, 01:54 PM #14

Thank you duncansport the idle was the problem now its ruining alot better

300dw124

03-03-2014, 01:54 PM #14

Thank you duncansport the idle was the problem now its ruining alot better

Duncansport

Holset

526

03-03-2014, 04:23 PM #15

(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! Big Grin

Duncansport

03-03-2014, 04:23 PM #15

(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! Big Grin

300dw124

Naturally-aspirated

10

03-04-2014, 12:17 AM #16

What kinda stuff can I do too the intake manifold and exhaust manifold to upgrade then and what turbo can I use?

300dw124

03-04-2014, 12:17 AM #16

What kinda stuff can I do too the intake manifold and exhaust manifold to upgrade then and what turbo can I use?

Duncansport

Holset

526

03-04-2014, 09:06 AM #17

(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)

Duncansport

03-04-2014, 09:06 AM #17

(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)

300dw124

Naturally-aspirated

10

03-04-2014, 04:47 PM #18

Pm sent

300dw124

03-04-2014, 04:47 PM #18

Pm sent

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