Question about 2003 Audi A4 Cabriolet

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My engine will stall constantly when i come to a complete stop and while accellerating the vehicle will shake vigourusly increasing with speed. however while idleing the shakeing stops, I replaced the MAF sensor and the stalling stopped, but the rps would drop dangerously low to stalling but then would jump back. this only occers sometimes since the maf has been replaced. but the shaking of the vehicle is getting much worse.

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  • 114 Answers

Check for boost hose or vacuum hose leaks..

Posted on Sep 19, 2009

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Pretty major problem here. My '92 Chrysler Imperial entered the "safe mode" for it's transaxle, then proceeded to stall on the next stop. It now will not start again. I need to fix this ASAP.


it is in limp mode because of a problem in the transmission
you will have to run the fault codes to determine the area of failure
areas to check for will be TCM , turbine speed sensor, servos, pump pressure sensors
take it to an accredited auto transmission specialist shop
it appears that the transmission control module doesn't know what ratio to select so at this point I would be wary of "new box" comments until the reason can be properly explained

Oct 12, 2016 | 1992 Chrysler Imperial

1 Answer

Why it stalls at stops and low speeds


accord stalling on every stop. (1/2) - EricTheCarGuy ...

www.ericthecarguy.com/.../8.../46884-accord-stalling-on-every-stop
The car runs good but stalls every time i come to a stop. ... a stop then it diesagain.only on the stops does the idle drop very low to the point of stalling.what ... only when I start slowing down and come to a complete stop RPM's go down and the cardies. ... The popular Honda Civic and Accord vehicles share many powertrain ...

1998 Honda Accord loses rpm/ stalls coming to a stop ...

honda-tech.com/honda-accord.../1998-honda-accord-loses-rpm-stalls-co...
Jan 10, 2013 - I just bought a 1998 4 cyl 2.3 L Honda Accord two days ago. ... 1998Honda Accord loses rpm/ stalls coming to a stop. .... Is clockwise high idle or low idle? all in all i probable rotated counterclockwide 1.5 or 2 turns. maybe this ...

1999 Accord, 130k+, stalls when slowing to a stop - Honda Accord ...

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Mar 10, 2010 - My fiancee's '99 Accord EX Coupe 4-cylinder automatic, with 130,000+ miles, has recently (in .... No low RPM & feeling like it's GOING TO stall.

99 Honda Accord - Strange Stalling Issues! HELP!

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Jan 02, 2016 | 1999 Honda Accord

1 Answer

Shuts off when idling


First, increase the idle speed. Easy/cheap to do
You should idle above 1000 rpm

Mar 08, 2014 | 2003 Ford Escort

1 Answer

Ford f150 shakes at about 40 - 50 mph. Shaking goes away


The whole vehicle shaking or an engine kind of shake?
The whole vehicle shake could be the tires need balanced. When they are out of balance they can clear up as the speed increases.

Oct 11, 2011 | 1996 Ford F150 Regular Cab

1 Answer

Obd2 system rediness status won't clear so I can run the smog test due to replacing the battery.


takes a long time to run the rediness test since there are 6 different tests to complete...

PROCEDURE 1
EVAPORATIVE EMISSION SYSTEM LEAK MONITOR
Inspection Conditions
Engine coolant temperature: 30°C (75°F) or less (The engine is stopped before the test drive is started).
Atmospheric temperature: 5 - 30°C (41 - 113°F).
Condition of A/T: Selector lever D range.
Fuel remained in fuel tank: 30 - 50% is recommended.
Time required: 16 minutes or less after started the engine.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position. Well be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 89 km/h (55 mph) or more.
While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 89 km/h (55 mph) or more and travel for 16 minutes.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position.

PROCEDURE 2
FUEL TRIM MONITOR
Drive Cycle Pattern
Inspection Conditions
Engine coolant temperature: 100°C (212°F) or less.
Atmospheric temperature: -10 - 60°C (14 - 140°F).
Condition of A/T: Selector lever D range.
Time required: 30 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 89 km/h (55 mph) or more.
While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 89 km/h (55 mph) or more and travel for 30 minutes.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position

PROCEDURE 3
CATALYTIC CONVERTER MONITOR
Drive Cycle Pattern
Inspection Conditions
Atmospheric temperature: -10°C (14°F) or more.
Condition of A/T: Selector lever D range.
Engine coolant temperature: Not set.
Time required: 16 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 89 km/h (55 mph) or more.
Travel for 300 seconds or more while keeping the vehicle speed at 89 km/h (55 mph) or more.
Decelerate until the vehicle speed is within 80 km/h (50 mph) or less.
While traveling at 56 - 80 km/h (35 - 50 mph) for 10 minutes or more, fully close the throttle at least once in 2 minutes and decelerate for 10 seconds or more.
Do not repeat deceleration too often.
Vehicle speed may go below 56 km/h (35 mph) after the deceleration.
Stopping and braking are permitted. (If stopped or drive at 56 km/h (35 mph) or less for more than 5 minutes the monitoring may be stopped. In this case please restart monitoring from the beginning.)
After completing the above deceleration, bring the vehicle speed back to 56 - 80 km/h (35 - 50 mph) and keep it in the range until starting the deceleration again.
Repeat the above deceleration at least 5 times.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position

PROCEDURE 4
HEATED OXYGEN SENSOR MONITOR
Drive Cycle Pattern
Inspection Conditions
Engine coolant temperature: 100°C (212°F) or more.
Atmospheric temperature: -10°C - 60°C (14 - 140°F) or more.
Condition of A/T: Selector lever D range.
Time required: 16 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 56 - 80 km/h (35 - 50 mph).
While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 56 - 80 km/h (35 - 50 mph) and travel for 16 minutes or more.
Stopping and braking during this operation are permitted. Keep the accelerator opening degree constant for 1 minute or more after each acceleration.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position

PROCEDURE 5
EXHAUST GAS RECIRCULATION (EGR) SYSTEM MONITOR
Drive Cycle Pattern
Inspection Conditions
Engine coolant temperature: 100°C (212°F) or less.
Atmospheric temperature: 5 - 60°C (41 - 140°F).
A/C switch: OFF.
Condition of A/T: Selector lever D range.
Time required: 16 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 56 - 80 km/h (35 - 50 mph).
While traveling 16 minutes or more at 56 - 80 km/h (35 - 50 mph) with engine speed 2,000 r/min or above, fully close the throttle at decelerate for 5 seconds or more until the engine speed reaches 1,000 r/min or under.
Do not repeat deceleration too often.
Stopping and braking are permitted (Rapid deceleration and sharp steering are not permitted).
After completing the deceleration, bring the vehicle speed back to 56 - 80 km/h (35 - 50 mph) and keep it in the range until starting the deceleration again.
Repeat the above deceleration at least 8 times by fully closing the throttle valve.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position

PROCEDURE 6
OTHER MONITOR (Main Components, Sensors & Switches, Wire Breakage & Short Circuit)
Drive Cycle Pattern
Inspection Conditions
Engine coolant temperature:
100°C (212°F) or less (Except engine coolant temperature sensor monitoring).
30°C (86°F) or less (Engine coolant temperature sensor monitoring).
Atmospheric temperature:
5°C (41°F) or more (Except engine coolant temperature sensor monitoring).
-10°C (14°F) or less (Engine coolant temperature sensor monitoring).
Condition of A/T: Selector lever D range.
Time required: 21 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start
Accelerate until the vehicle speed is 56 km/h (35 mph) or more.
While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 56 km/h (35 mph) or more and travel for 16 minutes or more.
Return the vehicle to the shop.
After stopping the vehicle, continue idling for 5 minutes, and then turn the ignition switch to the "LOCK" (OFF) position. Moreover, the vehicle should be set to the following conditions for idling.
A/C switch: OFF
Lights and all accessories: OFF
Transmission: Neutral

Sep 15, 2010 | 1998 Mitsubishi Eclipse

1 Answer

Engine surges under load at 3800 rpm


yes it could be. have fuel pump pressure tested, fuel pump pressure should be. (key on engine off) 1999 to 2000--with egr--41 to 47 psi without egr--52 to 58 psi,

May 30, 2009 | 1999 Pontiac Grand Am GT

2 Answers

The car shakes when in idle and when you put it into gear and runs rough. What could be the problem?


do the following, it should make the problem better, but it will not cure it completely.
Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Apr 17, 2009 | 2001 Toyota Corolla

1 Answer

'01 Elantra Start-up issue


i think you should change the fuelfilter.

Aug 08, 2008 | 2001 Hyundai Elantra

2 Answers

Noise problem


These vehicles are frequently exhibiting wheel bearing problems...sometimes sounds like a "rumble". Could be that pothole incident has caused damage to the bearing. Cheers, Patrick

Jul 17, 2008 | 2006 Honda Fit

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