E320 1996 Surging and Fuel Consumption
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e320 1996
E320 1996 Surging and Fuel Consumption
I had the head gasket done, now have a surging issue. Think its unrelated. Of note, they probably jump started the car.
Verified no vaccuum leaks - checked 4 times in total.
No fuel from fuel press reg port.
Since driving 2000 more km - its getting worse so I might be able to track it now its persistant.
Updated symptoms -
Colds starts are fine.
Hits operating temp and 9 times out of ten when idling in gear I'll get a low idle (500 rpm) or it'll surge from 500 to 1000 always fine accelerating or at fast running.
Excessive fuel consumption - not sure how much exactly - but possibly double the normal ?
Lacking Power.
After running for several minutes cold I pulled the plugs - they were wet with fuel. After hot running plugs dont look to bad. Maybee slightly sooty.
Originally had MAF below lower limit. Turned out the replacement MAF I got sent was a "good second hand" one, after installing got O2 below lower, above upper, out of range. So I sent the MAF back!
3 times its surged and cut out - stating "Check battery charge" on the dash. Restarts fine with no issues - doesnt sound flat.
So i popped in a known good battery I had and got the following volt tests:
12.6 ish not running and connected.
13.5 to 14 while running - idle or fast running.
All accessores on it drops to about 12.6.
When replaced the battery the symptoms dissapeared for 200 km of driving and then started again coincidence maybee. I tested the battery again and its voltage seems to have droped to about 12.4 off.
Old battery was as follows (ive charged and verified its good now) -
13.2 running
11.6 - 12.3 not running.
Sometimes at idle and in gear i was getting 11.9 - sometimes 13.
Can this all be related ?
Where to start now - Should I Order a new MAF?
Any suggestions on how to test these?
Can post video if needed.
Verified no vaccuum leaks - checked 4 times in total.
No fuel from fuel press reg port.
Since driving 2000 more km - its getting worse so I might be able to track it now its persistant.
Updated symptoms -
Colds starts are fine.
Hits operating temp and 9 times out of ten when idling in gear I'll get a low idle (500 rpm) or it'll surge from 500 to 1000 always fine accelerating or at fast running.
Excessive fuel consumption - not sure how much exactly - but possibly double the normal ?
Lacking Power.
After running for several minutes cold I pulled the plugs - they were wet with fuel. After hot running plugs dont look to bad. Maybee slightly sooty.
Originally had MAF below lower limit. Turned out the replacement MAF I got sent was a "good second hand" one, after installing got O2 below lower, above upper, out of range. So I sent the MAF back!
3 times its surged and cut out - stating "Check battery charge" on the dash. Restarts fine with no issues - doesnt sound flat.
So i popped in a known good battery I had and got the following volt tests:
12.6 ish not running and connected.
13.5 to 14 while running - idle or fast running.
All accessores on it drops to about 12.6.
When replaced the battery the symptoms dissapeared for 200 km of driving and then started again coincidence maybee. I tested the battery again and its voltage seems to have droped to about 12.4 off.
Old battery was as follows (ive charged and verified its good now) -
13.2 running
11.6 - 12.3 not running.
Sometimes at idle and in gear i was getting 11.9 - sometimes 13.
Can this all be related ?
Where to start now - Should I Order a new MAF?
Any suggestions on how to test these?
Can post video if needed.
Member
Joined: May 2008
Posts: 108
Likes: 0
2001 E320 Avant turbo diesel
Is that a CDI / turbo ? ... sounds a bit like my car in terms of your fuel consumption .. for urban figures I get about 12 at idle if I drive like a real angle Ive got the LTR/100KM down to 9.4 around town
current readings
11.4 AFTER RESET
12.4 AFTER START .. EXTRA URBAN LONDON DRIVING
have not been on the motor way for a long time as my indicators are fubar.. but Im sure it will be allot lower when your just crusing..
when my manifold motor was jamed and my cdi system disabled I was getting diabolical readings like 16-18+ at times ... just trying to drive normally heheh
current readings
11.4 AFTER RESET
12.4 AFTER START .. EXTRA URBAN LONDON DRIVING
have not been on the motor way for a long time as my indicators are fubar.. but Im sure it will be allot lower when your just crusing..
when my manifold motor was jamed and my cdi system disabled I was getting diabolical readings like 16-18+ at times ... just trying to drive normally heheh
