Mercedes-Benz 420-Class Questions Any type

  • Newest
  • Recently Active
  • Unanswered

I Am Looking Into 420sel Mercedes Benz 1989 - They Are Asking $2,700- Appar...

420SEL Mercedes Benz 1989 odometer: 217874 title status: clean

11 views with 2 answers (last answer 2 weeks ago)
75

My Heater/ac Won't Come On Or Blow Air Any Suggestions

I have a 1991 Mercedes 420 sel all summer the heat and ac unit would come on. Now it does nothing?

75

My Heater/ac Won't Come On Or Blow Air Any Suggestions

I have a 1991 Mercedes 420 sel all summer the unit would come on. Now it does nothing?

75

My 1991 Mercedes 420sel Runs Ok Cold And Is Sluggish When Warmed Up

When the car is cold it runs ok when hot it gets sluggish moves slowly

75

My Lights Light Is On On The Dash. Does Anyone Know What I Should Check. Th...

The light lights is on on my dash

75

Where Is The Thermostat On My 1991 Mercedes 420sel

I was told the thermostat is on the top of the engine. But it's not. Please help

75

My 1991 420sel Runs Worse After It Warms Up Burns More Gas And Skips At Acc...

It skips a little during idle less since I did the Lucas treatment. Now it runs rough once it warms up. Runs better cold

Please Help Me Price My Car! Valuable Or Piece Of Junk??

Bohol Mark- I was reading the thread about MB 1991 420 SEL cars, and actually all of you seem very knowledgeable about this car; perhaps you could help me. I currently own this vehicle and want to ...

9 views with 1 answer (last answer about a month ago)
75

I Have A 1991 Benz 420sel Lately It Runs Smooth When It's Cold And It Gets ...

The car was running rough then I put Lucas in and it got better. Lately it runs rough when it gets warm

Price On Parts

Tune up parts n price

14 views with 3 answers (last answer 5 months ago)

A Few Days Ago My Engine Electronics Light Went Off Now My Car Won't Start...

Make sure the battery was charged, check for loose wiring under the hood.

55 views with 11 answers (last answer about a year ago)

Car Starts And Runs As Soon As I Hit The Throttle It Dies??

Hi all, my father has a 1986 420sel he has just fitted another engine to it. It is a 500 engine but the problem is as soon as you hit the throttle it dies. It will idle ok can any body help us plea...

41 views with 1 answer (last answer about a year ago)
5

Start And Stall

My 89 Benz 420 Sel starts and stalls right away. I replace fuel pumps and fuel pump relay. The problem still the same. Any suggestions please.

73 views with 2 answers (last answer about a year ago)

1991not Getting The Gas It Should What Could Be Causing It

37 views with 3 answers (last answer about a year ago)

Thump Noise, Feels Like Car Wants To Die

My 1991 bentz 420 sel started doing a thumping noise when I am stop at a red light. The oil pressure drops and goes back up. But when I put it in netural the car is fine. Following day car was fine th...

169 views with 10 answers (last answer about a year ago)

I Shopping For A Cheap Decent Car To Buy And I Ran Across Two. Both Are $1k...

I have the money to take care of any mechanical problems that might happen. Just would like to know witch one would give me the lease amount of problems. Remember the benz is in mint condition an...

33 views with 1 answer (last answer 2 years ago)

How Do You Turn On/off Wipers On Headlight On 1994 S420?

58 views with 2 answers (last answer about a year ago)

My Mb 1991 420 Sel Has 220,000 Miles Cranks On Ignition Does Not Start. Wha...

My MB mechanic said that our 1991 MB 420 SEL needs new ignition control unit. The cost is $920 for part and $172 labor. It also has an air pump that is seized. The mechanic said it will cost additio...

381 views with 8 answers (last answer about a year ago)
5

No Power To The Fuel Pumps.

Bought a 1991 420sel. The fuel pumps don't pump. Checked with a multi-meter and no power to them. Any suggestions would be appreciated.

433 views with 4 answers (last answer 2 years ago)
1 2 next

Search Mercedes-Benz 420-Class Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Mercedes-Benz 420-Class Experts

#1 BoholMark
BoholMark
Reputation 60
#2 Habib Sherdil
Habib Sherdil
Reputation 50
#2 importguy
importguy
Reputation 50
View All

Related Models For Sale

Used Mercedes-Benz S-Class
77 Great Deals out of 7,428 listings starting at $2,300
Used Mercedes-Benz 560-Class
182 listings starting at $5,000
Used Mercedes-Benz E-Class
366 Great Deals out of 22,707 listings starting at $1,450
Used Mercedes-Benz SL-Class
71 Great Deals out of 3,149 listings starting at $4,000
Used BMW 7 Series
175 Great Deals out of 5,719 listings starting at $3,299
Used Mercedes-Benz C-Class
627 Great Deals out of 32,385 listings starting at $1,990
Used Chevrolet Corvette
277 Great Deals out of 20,556 listings starting at $3,688
Used BMW 5 Series
631 Great Deals out of 15,459 listings starting at $2,495
Used Ford Mustang
541 Great Deals out of 43,035 listings starting at $1,699
Used Mercedes-Benz CLK-Class
30 Great Deals out of 1,528 listings starting at $2,950