Why is my 1991 500SL having difficulty starting?
I am having some difficulty with starting my vehicle (1991 500SL from Europe), it will crank for a long time when it is cold but not start. If you keep cranking for about 5 minutes (not non stop) it will fire up, but is very unsteady and will stall if you try and give it any gas.
When did the Mercedes SL500 R129 go away?
They used a little less fuel than the first four speed automatic SL500s. By 1996 the new 5 speed transmission increased the fuel economy of the V8 SL500 to within 1 or 2 MPG of the SL320, thus the SL320s went away in 1998. Today you can get a beater early 1990’s 300SL for about $10,000.
When did the SL500 body style come out?
This R129 body style SL500 was made from 1990 through 2002. It was called the 500 SL from 1990 – 1993. They all have just about the same suspension regardless of year or package. The “sport” packages are just trim and tires, not suspension, engine or drivetrain.
What was the best thing about the Mercedes SL500?
They lost of one of the best things about the SL: the smooth unlimited power of the V8. They used a little less fuel than the first four speed automatic SL500s.
I am having some difficulty with starting my vehicle (1991 500SL from Europe), it will crank for a long time when it is cold but not start. If you keep cranking for about 5 minutes (not non stop) it will fire up, but is very unsteady and will stall if you try and give it any gas.
Can a faulty brake light switch cause a car to not start?
In cars with a push-button start system, a faulty brake light switch can cause the vehicle not to start. Often, a brake light switch might be sticking and work intermittently. This can cause the Check Engine or ABS system warning light to come on on the dash.
How do you test the brake light switch?
In some cars, the testing procedure involves testing the voltage at the brake light switch connector when the brake pedal is depressed and released. In other cars, the service manual recommends testing the switch continuity with the pedal depressed and released. If there is no voltage at the brake switch,…
When to test and adjust a neutral safety switch?
Before you try to adjust the switch, you can do a couple of preliminary tests that can give you a clue about the condition of the switch. Although not a definitive test, it will serve you as an additional check for the procedures that follow: if the engine starts in a position other than Park or Neutral, most likely the switch needs adjustment.
What kind of car is the 1991 Mercedes 500SL?
1991 Mercedes Benz 500 SL Roadster. 127,000 miles. New tires, battery and brakes. Complete tune-up. Hard top AND soft top. Great cruising vehicle !! Nice car !
When did the Mercedes Benz 500 SL come out?
▼ 1991 Mercedes-Benz 500 SL (aut. 4) (model since September 1991 for Europe ) car specifications & performance data review Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Mercedes-Benz 500 SL (aut.
How often should I replace the battery in my Mercedes SL500?
Replace the battery in your 1998 Mercedes-Benz SL500 5.0L V8 once every 4 years for optimal performance. Watch this free video to see how to replace a dead battery in your 1998 Mercedes-Benz SL500 5.0L V8
How old is the battery on a Mercedes Benz?
This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars. How old is the battery on your Mercedes-Benz? While some MB owners have pushed over 10 years on an original battery, the battery should be considered for replacement around 6 or 7 years.
Why is the battery on my Mercedes Benz not working?
Hint: Starter Problem or Low Battery This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars. How old is the battery on your Mercedes-Benz?
What should idle speed be on Mercedes 500SL?
If the voltage is c. 70% of the battery voltage, then the fuel injection ECU recognizes that the throttle is closed, and it should be in its idle control routine. The next step is to measure the current output by the ECU to the idle speed control valve — it should be 700-1000 milli-amps.
Hint: Starter Problem or Low Battery This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars. How old is the battery on your Mercedes-Benz?
This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars. How old is the battery on your Mercedes-Benz? While some MB owners have pushed over 10 years on an original battery, the battery should be considered for replacement around 6 or 7 years.
Why does my Mercedes not start when I charge the battery?
This Mercedes-Benz is not starting because of a low battery. In this case, what you need to do is trickle charge your battery using any of these 12 volt battery trickle chargers. If you need help read this article on How to charge a Mercedes-Benz the right way. Mercedes won’t start, and it’s not the battery.
Why is my Mercedes Benz starter not working?
Often times, when the starter is defective or seizes up it will blow out the fuse that protect the starter circuit. Another thing that you can try is to hit the starter with a rubber hammer a couple of times. Depending what kind of starter problems you have, the starter may work a few more times.
Why is the brake light switch on my Mercedes not working?
If you don’t see the letters on the cluster change from P to R to N, it is a good sign that the gear selector module is defective. You can buy a new brake light switch on Amazon for less than $15 USD, just do a search for Mercedes-Benz Brake Light Switches.
What are common reasons my Mercedes Benz SL500 won’t start?
What are common reasons my Mercedes-Benz SL500 won’t start? While there are a variety of reasons your Mercedes-Benz SL500 won’t start, the most common 3 are a dead battery, an alternator problem, or failed starter. How is a no-start diagnosis fixed?
This Mercedes-Benz is not starting because of a low battery. In this case, what you need to do is trickle charge your battery using any of these 12 volt battery trickle chargers. If you need help read this article on How to charge a Mercedes-Benz the right way. Mercedes won’t start, and it’s not the battery.
Often times, when the starter is defective or seizes up it will blow out the fuse that protect the starter circuit. Another thing that you can try is to hit the starter with a rubber hammer a couple of times. Depending what kind of starter problems you have, the starter may work a few more times.
How often do you run a 1992 Mercedes 500SL?
1992 Mercedes Benz 500SL. Car won’t start without putting a little gas in intake. Will keep running as long as your foot stays on the gas pedal … read more 1991 500sl, I don’t drive it much maybe at best once a week. 1991 500sl, I don’t drive it much maybe at best once a week.
What kind of fuel pump does a Mercedes 500SL use?
I have a 1992 Mercedes 500SL that takes long crank to start, and black smoke when it does fire. I have replaced the fuel pressure regulator, … read more MB 1992 300 TE wagon Fuel Pump Relay type inside the MAS relay .
What kind of engine does a 1990 500SL have?
500SL: 1990 500SL Car is not driven a lot, garaged covered. I have a 1985 Mercedes 380sl that idles rough It is idling between 500 and 800 rpm.
What causes a spark plug not to spark?
The following information helps to identify the causes of weak spark, no spark or intermittent spark. Check for one or more possible malfunctions: No spark or weak spark to one cylinder. Non-resistor spark plugs in use. Spark plug worn, fouled or damaged. Poor connection at spark plug cap to high tension lead.
Why does my snowmobile not have a spark?
A gasoline engine needs three things in order to run: fuel, compression and spark. No fuel or compression? Those are easier to track down because they’re usually due to a mechanical problem like a dirty carburetor.
What happens when there is no spark from the ignition coil?
1 Power. Two positions of the ignition switch provide power to the positive primary post of the ignition coil. 2 Signal. With no external signal to the coil negative primary post, voltage would travel through the ignition coil windings without inducing any secondary spark. 3 Flow. 4 Open Circuits.
How can I test the spark at the coil?
Using an Adjustable Ignition Spark Tester Test the ignition coil positive and negative side. Check for voltage output at the ignition coil. Disconnect the ignition coil wire from the distributor and install the spark tester to the wire and ground the tester to the engine. Crank the engine for a few seconds.
Why is there no spark at the tip of the spark tester?
While the engine cranks, you should see a bright, blue spark at the tip of the spark tester. If there’s a good spark, including the rest of the cylinders, the ignition system is working properly. If only one or a few cylinders have a weak or no spark, the problem is in the secondary side of the system.
What causes a car to stall with no spark?
Consequently, An old or failing ignition pickup may cut out signal intermittently, which may cause the engine to stall. The engine may suddenly just shut off, almost as if the key had been turned off. Depending on the nature of the issue, sometimes the vehicle can be restarted and driven.