Question about 1998 Mercedes-Benz E-Class

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EC will not switch off, so cooling does not happen.

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There is a couple possibilities for the ec light coming on and not switching off.1-low freon level-possible leak. 2-evaporator temperature sensor- one way to tell is if the a/c comes on and then shuts off after 10mins-this will happen every time the key is cycled.3-the actual a/c push button assembly is faulty.

Posted on Oct 01, 2010

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Posted on Jan 02, 2017

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I filled up my petrol tank and the gauge reads empty after 250 kms! This has happened since I had the "ECT POWER" function re-activated. reset the EC.U.?


have the OBD I codes read ,it might just need a reset but will also tell you if there is an issue with any sensors/switches etc

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i know that the previous gen quest had the fuel inertia RESET switch on the driver side kick panel...

fuel is cutting off via the ECM for your generation though

"If the engine speed is above 1,800 rpm with no load (for example, in neutral and engine speed over 1,800 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed. Fuel cut will operate until the engine speed reaches 1,500 rpm, then fuel cut is cancelled."

http://www.nicoclub.com/FSM/Quest/2004_Quest/ec.pdf

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E404 error code?


P0404 Dodge - Exhaust Gas Recirculation Position Sensor Performance Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control ?odule (EC?) Controlled Vacuum Switch Valve or EGR Solenoid and an EGR Vacuum ?odulator. Depending on the engine and driving conditions, the EC? will control the EGR Solenoid which will operate the EGR Vacuum ?odulator to regulate the opening and closing of the EGR Valve.
The EGR system on recently built vehicles uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates according to the output pulse signal of the EC?. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the EC? does not issue the pulse signal. ? certain voltage signal is issued so that the valve remains at that particular opening.

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U1000 2002 altima 2.5


Do you know about serial data networks ? C.A.N - controller area network . Do you know what U - codes are about ? Download 2002 Nissan Altima LAN System Section LAN PDF Manual 60 Pages

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Here are sections of factory repair manual . Read up on C.A.N . U 1000 an U1001 one of the modules is having a problem on the wiring for the C.A.N bus is . You can check at the DLC with a volt meter .

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CAN COMM CIRCUIT U1000 1000*6 - - × EC-137 CAN COMM CIRCUIT U1001 1001*6 - - × EC-137

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1 Answer

What is the ec button for? my air will not blow cold and the ec button is staying on


EC stands for air conditioning. Have you charged the air conditionning with gas. is the air conditioning pump making a clicking noise when you press the EC button.

May 30, 2011 | 2001 Mercedes-Benz S-Class

1 Answer

SUZUKI GRAND VITARA X-EC V6.FRONT BRAKE SQUEAK


This ussualy happens when the brake pads is almost totally worn out. this time you got to have your brake pads replaced.
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Sep 21, 2010 | 2005 Suzuki Grand Vitara

1 Answer

Problem with the EC light staying on after repairs were made to the air conditioning system. Can press the EC button and hold for a few seconds and the light will go off and the compressor will kick in....


The pressure/ temp switch on the reciever drier is what the system uses to determine if the system has enough freon. Most likley cause assuming system is properly charged. You can pull actual values through the a/c push button module. If you cannot see an erratic value your best bet is to have the system scanned for codes.

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have you checked the fan switch which should be on the radiator, maybe faulty and operating at the wrong tempreture.

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1 Answer

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hi,send to your dealer to diagnose,possible cause renew pressure switch or change setting on aircon,ty

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