When I am driving and hit a bump or cross the track my car cuts off? What could that be? I have tried to change spark plugs and wires, cleaned battery cable, and checked for lose wires.

35

Asked by Nov 30, 2013 at 11:34 PM about the 2001 Mercedes-Benz E-Class E320 4MATIC

Question type: Maintenance & Repair

When I am driving and hit a bump or cross the track my car cuts off?  What could that be?  I have tried to change spark plugs and wires, cleaned battery cable, and checked for lose wires.

6 Answers

101,375

Also check, clean and tighten the negative battery connections on the frame and motor. Also check alternator connections.

2 out of 2 people think this is helpful.

Dandy, is onto something...especially the 1/0 cable to the motor block~ motor needs power too (er um Grounding)...ignition..grounding for sparkplugs...that's the thing~

2 out of 2 people think this is helpful.
35

so what exactly needs to be done. I have had this vehicle at two different shops and has paid over 300 dollars. They each double checked the wires, plugs, and cleaned the battery cable.

1 out of 1 people think this is helpful.

the battery...the bighuge cables off the top of the battery....the Black cable....follow the black cable until it comes to a point with a lug and a bolt....undo the bolt....wirebrush off all the corrosion from the lug...wirebrush the chassis/ground the lug came from...put the bolt back in and tighten 'er down~ ta sall~

170

I'm in agreement. Your car is losing its negative ground connection and the probable cause is the lug on the engine block or frame. Your garage has probably failed to clean this end and has only be looking at the battery terminal. As a last resort there could be a dead short in your battery but that would be a long shot. mike

2,155

Has anyone considered a faulty fuel cut off switch? Not sure where it's located, but it's worth a look.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

E-Class

Looking for a Used E-Class in your area?

CarGurus has 22,861 nationwide E-Class listings starting at $1,500.

ZIP:

Search Mercedes-Benz E-Class Questions

Mercedes-Benz E-Class Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,780
#2 dandyoun
dandyoun
Reputation 1,740
#3 bobkat
bobkat
Reputation 1,240
View All

Related Models For Sale

Used Mercedes-Benz C-Class
932 Great Deals out of 32,458 listings starting at $2,497
Used Mercedes-Benz S-Class
159 Great Deals out of 5,942 listings starting at $2,500
Used BMW 5 Series
643 Great Deals out of 17,674 listings starting at $1,500
Used BMW 3 Series
1,778 Great Deals out of 40,586 listings starting at $1,350
Used Mercedes-Benz M-Class
271 Great Deals out of 5,677 listings starting at $2,500
Used BMW 7 Series
189 Great Deals out of 5,841 listings starting at $3,599
Used Mercedes-Benz SL-Class
106 Great Deals out of 3,391 listings starting at $1,500
Used Audi A6
160 Great Deals out of 7,312 listings starting at $2,000
Used Mercedes-Benz CL-Class
22 Great Deals out of 617 listings starting at $4,786
Used Mercedes-Benz CLK-Class
61 Great Deals out of 1,465 listings starting at $2,990
Used BMW X5
571 Great Deals out of 16,652 listings starting at $2,788

Used Cars For Sale

2017 Mercedes-Benz E-Class For Sale
6 Great Deals out of 8,580 listings starting at $47,998
2016 Mercedes-Benz E-Class For Sale
61 Great Deals out of 1,760 listings starting at $32,999
2015 Mercedes-Benz E-Class For Sale
11 Great Deals out of 450 listings starting at $28,999
2014 Mercedes-Benz E-Class For Sale
219 Great Deals out of 4,556 listings starting at $19,900
2013 Mercedes-Benz E-Class For Sale
47 Great Deals out of 789 listings starting at $17,999