Question about 2000 Mercedes-Benz S-Class

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S430 has no acceleration...drives at idle speed only

Heard a little pop when engine started the first time the problem occured. car has never accelerated since. no check engine lights are "on"

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Posted on Jan 02, 2017

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SOURCE: Mercedes C200 just idling accelerator does not work

Try this. Turn the ignition to position 2 and leave it about two minutes(you should hear components moving/making noise under the hood). This should relearn the throttle stop(sounds like your vehicle lost synchronization). After that period of time, start the car and see if it helps. If not, then it will probably have to go to the dealer so they can use the computer to try and relearn it.

Posted on Nov 14, 2008

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SOURCE: loosing power at cruising speed

have you had the transmission flushed? it seems to be caught in a limbo. where the calibration of the speedo and the transmission are not compatable. Now as wierd as that seems it happens usally like when going up a hill if you have a manual trans. and cruise locked in. it cant hold that speed and moves to a different speed if you dont down shift. Or perhaps your cruise control cable is slipping. is it vacume over mechanical? pop the hood and make sure all your hoses to cruise control are tight and no leaks.

Posted on Apr 04, 2009

  • 14 Answers

SOURCE: Check engine light stays on. Car idles and shakes

sounds like you have a misfire my friend...take it to autozone to have the codes pulled and post them here

Posted on Apr 30, 2010

  • 4044 Answers

SOURCE: Driving my S430 and the

Sounds like the choke system is stuck. It helps the vehicle start in cold weather by increasing fuel until the vehicle engine warms up. The mechanic should have known this. On carbureted vehicles this is controlled mostly by a Thermal spring unit but on Injection engines that is a little more involved. Have the mechanic check the choke system or if you wish to do this yourself get a Haynes or Chilton's repair manual on your vehicle and follow the procedures outlined there.

Posted on Jan 15, 2011

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1 Answer

1999 Honda Accord; making a popping sound in idle (as if popping popcorn under the hood). What could this be?


there could be a slight hole in one of the air intale hoses and can only be heard at idle as drowned out by engine noise , i'd get the OBD codes read this should tell you which , if any , sensor/switch etc could be causing this issue, keep me posted if you wish

Mar 12, 2015 | 1999 Honda Accord

1 Answer

My 05 chevy malibu is not excelerating or shifting properly...


I would test both the tps and map sensors.
map sensor is here:

0996b43f802030b8-etlvqcyxjdbbokifzikh1c5u-5-0.gif

Testing

Check the Manifold Absolute Pressure (MAP) sensor circuit as follows:
Ignition OFF, disconnect the MAP harness connector at the MAP sensor.Ignition OFF, test for less than 5 ohms of resistance between the low reference circuit terminal 2 and ground.If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground.If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.Verify the scan tool MAP Sensor parameter is less than 1 kPa.If greater than the specified range, test the signal circuit terminal 3 for a short to voltage. If the circuit tests normal, replace the ECM.Install a 3A fused jumper wire between the signal circuit terminal 3 and the 5-volt reference circuit terminal 1. Verify the scan tool MAP Sensor parameter is greater than 126 kPa.If less than the specified range, test the signal circuit terminal 3 for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.If all circuits test normal, test or replace the MAP sensor.

0996b43f802030bb-etlvqcyxjdbbokifzikh1c5u-5-2.gif


Check the Throttle Position (TP) sensor circuits as follows:
Ignition OFF, disconnect the harness connector at the throttle body.Ignition OFF for 90 seconds, test for less than 5 ohms of resistance between the low reference circuit terminal C and ground.If greater than 5 ohms, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM. Ignition ON, test for 4.8-5.2 volts between 5-volt reference circuit terminal E and ground.If less than 4.8 volts, test 5-volt reference circuit for a short to ground or an open / high resistance. If the circuit tests normal, replace the ECM.If greater than 5.2 volts, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ECM. Verify the scan tool TP sensor 1 voltage is less than 0.1 volt.If greater than 0.1 volt, test the signal circuit terminal D for a short to voltage. If the circuit tests normal, replace the ECM. Verify the scan tool TP sensor 2 voltage is greater than 4.8 volts.If less than 4.8 volts, test the signal circuit for a short to ground. If the circuit tests normal, replace the ECM. Install a 3A fused jumper wire between the signal circuit terminal D and the 5-volt reference circuit terminal E of the TP sensor 1. Verify the TP sensor 1 voltage is greater than 4.8 volts.If less than 4.8 volts, test the TP sensor 1 signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM. Install a 3A fused jumper wire between the signal circuit terminal F and the low reference circuit terminal C of the TP sensor 2. Verify that the TP sensor 2 voltage is less than 0.1 voltIf greater than 1.0 volt, test the TP sensor 2 signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM. Ignition OFF for 90 seconds, disconnect the harness connector at the ECM.Test for less than 5 ohms of resistance on all TP sensor circuits between the following terminals:ECM C2 signal circuit terminal 65 to TP terminal DECM C2 signal circuit terminal 63 to TP terminal FECM C2 5-volt reference circuit terminal 3 to terminal E If greater than 5 ohms, repair the affected circuit for open/high resistance.Test for infinite resistance between TP sensor 1 signal circuit terminal D and TP sensor signal circuit terminal F.If less than infinite resistance, repair the short between TP sensor 1 signal circuit and TP sensor 2 signal circuit. If all circuits test normal, replace the throttle body.

0996b43f802030be-etlvqcyxjdbbokifzikh1c5u-5-5.gif
Fig. Throttle Actuator Control electrical connector


Throttle Body Relearn Procedure
NOTE
Do NOT perform this procedure if DTCs are set.

Start and idle the engine in PARK for 3 minutes.With a scan tool, monitor desired and actual RPM.The ECM will start to learn the new idle cells and Desired RPM should start to decrease.Ignition OFF for 60 seconds.Start and idle the engine in PARK for 3 minutes.After the 3 minute run time the engine should be idling normal.
NOTE
During the drive cycle the check engine light may come on with idle speed DTCs. If idle speed codes are set, clear codes so the ECM can continue to learn.

If the engine idle speed has not been learned the vehicle will need to be driven at speeds above 70 km/h (44 mph) with several decelerations and extended idles.
After the drive cycle, the engine should be idling normally.

If the engine idle speed has not been learned, turn OFF the ignition for 60 seconds and repeat step 6.Once the engine speed has returned to normal, clear DTCs.

Jul 29, 2017 | 2005 Chevrolet Malibu

1 Answer

Driving my S430 and the car accelerated to higher speeds, mechanic says it is a default with the pedal, now when the car is started the rpms revs and stays, can you tell me what might be the problem, and...


Sounds like the choke system is stuck. It helps the vehicle start in cold weather by increasing fuel until the vehicle engine warms up. The mechanic should have known this. On carbureted vehicles this is controlled mostly by a Thermal spring unit but on Injection engines that is a little more involved. Have the mechanic check the choke system or if you wish to do this yourself get a Haynes or Chilton's repair manual on your vehicle and follow the procedures outlined there.

Jan 15, 2011 | 2001 Mercedes-Benz S-Class

2 Answers

Volvo 240 GL Wagon, 1986


Seek good repair shop, too many possibly problem, Sometimes that's the best money spent.ask for a one hour diagnostic check.

Sep 25, 2009 | 1992 Volvo 240

2 Answers

Car feels like tranny slips or car misses during acceleration


check distributor cap and rotor...check fuel pump ....

May 07, 2009 | 1998 Ford Escort

1 Answer

Taurus 2003 idling problems


mcdevito75 here, Sounds like the idle speed motor, Ford is known for these idle speed motors going bad, in the later stages the car races like crazy. have your repair shop check this idle speed motor and change it.

Mar 14, 2009 | 2003 Ford Taurus

1 Answer

Stops while driving


this is usually due to a dirty throttle body. just beware if you do try to clean it you will need to preform the idle relearn procedure. this does work, ive done it personally.

A. Accelerator Pedal Release Position Learning Procedure.
1. Make sure that the accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds (how would you know if you get it right?)


B. Throttle Valve Closed Position Learning
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch is “ON”.
3. Turn ignition switch is “OFF” wait at least 10 seconds.
Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound (i never get this right because i never heard anything)

C. Idle Air Volume Learning (Throttle Position Learning)
It's best to time with a watch/clock.

1. Perform “Accelerator Pedal Released Position Learning”.
2. Perform “Throttle Valve Closed Position Learning”.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Conform that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
6. Repeat the following (steps 7a, 7b) procedures quickly five times within 5 seconds.
7a. Fully depress the accelerator pedal (HARD)
7b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the Check Engine Light (CEL) stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the CEL is ON.
10. Start engine and let it idle.
11 Wait 20 seconds
12Rev up the engine two or three times and make sure the idle speed and ignition timing are within the specifications. (this is fine because SES light lets you know if you did it right the way it blinks)

Oct 25, 2008 | 2005 Infiniti G35

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