What should the idle Hell be on a Mercedes Benz?
In any case, it should NEVER be as high as 1500 by itself. The warm-up stuff brings it to 800-1000, something like that. Abnormal Operation Here’s a typical pattern:
How often do Mercedes Benz 450SL AC units fail?
Except for the servo units in the automatic climate-control systems of the 1977-1980 450SLs, which seem to fail every three years, the air conditioners don’t break particularly often. “They just don’t cool well”.
How to install Mercedes Benz 107 SLC heat AC?
This kit comes with a new manual control valve, hose section, splice fitting, four German hose clamps, a 5 foot control cable and complete instructions on how to properly install this kit yourself. #2 Blower Motor Issues.
Why is my heat not working on my Mercedes 107?
There are a number of reasons that the heat system, air conditioning and climate control fail or just don’t work well on the Mercedes 107 series models, while there are multiple issues that occur to create these problems, there are some affordable solutions to their repair and here are some main reasons and their solutions.
Is there such a thing as high idle Hell?
Mercedes-Benz Tinkering – High Idle Hell I just went through High Idle Hellwith my ’83 380SL. It was idling at 1500, most of the time, and stalled on occasion. Here are some notes. This is a common problem with these cars. Examples: exampleexampleexample. (You may notice a common thread here: The computer.) Components
Why does my car idle at 1500 all the time?
Quick tests If your idle stays at 1500 all the time, most likely it is the electronic idle speed regulation. (If you want to simulate this in a properly working car, just yank the idle speed controller plug off.) Jiggle the connectors to the slide valve and the controller box.
What to do when your car is at high idle?
Take the computer out of its plastic case. Plug it back in to the connector and let the board just dangle. Start the car and let it run at its high idle. Start monkeying with the controller circuit board. (It won’t hurt you. You probably won’t hurt it, either — these are discrete linear components, pretty heavy-duty.
What causes the idle speed to go up or down?
The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. If the valve fails or has any issues it can cause the idle speed to be thrown off. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. 2. Check Engine Light comes on
What causes an engine to stall at idle?
If the ISC valve is gummed up with fuel varnish or dirt, it may stick, preventing the engine from maintaining the proper idle speed when the throttle closes. A faulty idle speed control circuit may also allow the engine to stall when idling if it fails to compensate for idle loads placed on the engine by the charging system or A/C compressor.
Why does my car stall at highway speeds?
The engine may start and idle fine, but run out of power or even stall at highway speeds. If the engine starts right back up after stalling, the likely cause is low fuel volume delivery because of a weak pump. If the engine is running normally one minute, but suddenly quits, loss of ignition may be the problem.
What causes rough idle and low rpm at startup?
You start the engine cold and it will hardly run. It runs rough and idles very low and will even quit a few times. You may also notice that your ABS light comes on. After the engine warms up idle speed will increase and the engine may smooth out (although acceleration may have some hesitation until the engine gets real hot.
Can a bad idle control valve cause stalling?
This is controlled by the engine’s computer. Sometimes parts go bad, which results in your car idling strangely or stalling. Check to see if your idle control valve is functioning properly before attempting to replace it. Look for a high engine idle. A common symptom of a faulty idle control valve can be a high idle.
When does the ABS light come on at idle?
You may also notice that your ABS light comes on. After the engine warms up idle speed will increase and the engine may smooth out (although acceleration may have some hesitation until the engine gets real hot. But, the ABS light may continue to stay on while driving and you may experience a pulsing pedal when you stop (not always).
What are the components of the idle speed regulation?
For ’83, the components to the electronic idle speed regulation are: Idle speed compensator (aka slide valve) Idle speed controller (aka “computer” although it’s really an analog circuit) Overvoltage “relay” 16C temp switch
How do I get the idle speed controller to work?
(If you want to simulate this in a properly working car, just yank the idle speed controller plug off.) Jiggle the connectors to the slide valve and the controller box. If it has an effect, the plugs can be opened and the connections re-soldered.
Why is the idle speed of my car so high?
Step 2 – The idle air control motor (valve) is responsible for controlling the engine idle speed, if this part fails or becomes weak the engine idle speed could become erratic, additionally, this condition may or may not trigger the MIL (check engine, service engine soon light.)
How to troubleshoot an automotive engine high idle?
The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Step 1 – If the check engine or service engine light soon has illuminated retrieving the diagnostic trouble codes could lead you in the right direction of what the problem is, or is related too.
Mercedes-Benz Tinkering – High Idle Hell I just went through High Idle Hellwith my ’83 380SL. It was idling at 1500, most of the time, and stalled on occasion. Here are some notes. This is a common problem with these cars. Examples: exampleexampleexample. (You may notice a common thread here: The computer.) Components
Quick tests If your idle stays at 1500 all the time, most likely it is the electronic idle speed regulation. (If you want to simulate this in a properly working car, just yank the idle speed controller plug off.) Jiggle the connectors to the slide valve and the controller box.
When did Mercedes Benz stop making the 190 E 2.6?
In the North American market, the 190 E 2.6 was sold until 1993, the end of the W201’s production run. From 1992–1993 the 2.6 was available as a special “Sportline” model, with an upgraded suspension and interior.
What kind of engine does a Mercedes 190 E 2.3 have?
In 1985, the 190 E 2.3 now came fitted with the M102.985 engine, producing 132 PS (97 kW; 130 hp) until it was revised in 1987, now using the Bosch KE3-Jetronic Injection system, a different ignition system, and a higher compression ratio, producing 136 PS (100 kW; 134 hp).
What are the Extra dials on the Mercedes 190 E?
Three extra dials – an oil temperature gauge, stopwatch and voltmeter – were included in the centre console. The 190 E 2.3-16 was available in only two colours, Blue-Black metallic (Pearl Black in the US), and Smoke Silver. The 2.5-16 added Almandine Red and Astral Silver.
What was the top speed of the Mercedes Benz W201?
The oversquare 95.50 x 80.25 mm bore and stroke dimensions ensured that the car could easily rev up to the 7,000 rpm redline. Acceleration from 0–100 km/h (62 mph) was in less than eight seconds, and the top speed was 230 km/h (143 mph).
How to check high rev and RPM idle after start?
To check for a sticky accereration cable, disconnect the cable from the throttle lever… turn on the engine and see if the idle is normal now. While the cable is disconnected, have someone depress the gas pedal while holding the end of the cable… if it is sticky, you will notice it.
Why does my CDI eratic shake at idle?
However, at idle its not very well, it idles at approx 650rpm, the whole car shakes, if i touch the throttle slightly and put it at 750 rpm its absoloutely fine. Its worse when the engine is at full temp, its not as bad when the engine is cold, i assume the cold startsensor is compensating with the fuelling there.
What causes a car to idle erratically?
What often happens with heat from the engine is pipe dry up or pipes chafe against things and over a period of time the split which makes the sensors go mad hence the erratic idle. When you tap the gas the car goes back between the tolerances and it seems fine.
What happens to the engine when left in idling position?
When the engine is left in idling position, it maintains a steady but low rate of revolution approximately 1,000 RPM. The RPM needle stays constant, and this indicates that the vehicle’s engine is receiving the correct amount of air and fuel.
To check for a sticky accereration cable, disconnect the cable from the throttle lever… turn on the engine and see if the idle is normal now. While the cable is disconnected, have someone depress the gas pedal while holding the end of the cable… if it is sticky, you will notice it.
What to do if your car engine has rough idle?
If you own an old car and are experiencing rough idling, it is a good idea to clean the carburetor and check the hoses for damage or dirt buildup. Rough idling is a serious issue and should not be ignored for a long time. If the problem persists and is not fixed, it can lead to engine failure as well.
Why is the exhaust gas recirculation valve on at idle?
The Exhaust Gas Recirculation Valve is a vital emission control device. It allows the exhaust gas to enter into the intake manifold, with the sole purpose of reducing emissions from the motor. However, this EGR valve isn’t supposed to operate during idle, at wide open throttle or before the engine is warmed up.
Take the computer out of its plastic case. Plug it back in to the connector and let the board just dangle. Start the car and let it run at its high idle. Start monkeying with the controller circuit board. (It won’t hurt you. You probably won’t hurt it, either — these are discrete linear components, pretty heavy-duty.
Why does my Mercedes Benz E class run smooth?
The Mercedes-Benz E-Class is a luxurious sedan with a very smooth engine. If the engine idles rough, this means you have a problem. To run smooth, the engine needs air and fuel in optimal proportions. In a modern car, the proportion between air and fuel is decided by an on-board computer that gets information from a wide range of sensors.