Question about 1998 Audi A4

1 Answer

1998 Audi A4 1.8 - Engine is idling badly and stalls when warm.

It is also difficult to start. I have found a sensor at the back of the head with no wires running to it. Could this be the problem or is this sensor not needed on some models?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

Is this sensor at the back of the bulk head under the inlet trucking. Are there two of them next to each other that look the same. If so that could be engine/coolant temperture sensor which would cause all sorts of engine running problems If not pluged into the wiring loom. Need more info for a better diagnoses.

Posted on Dec 27, 2008

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

89 Chevy Sprint takes about 5 minutes to warm up to be able to drive away or it stalls when I give it gas. The engine will rev up for 3-4 seconds then drop down and almost stall and then rev again during...

Plug the vacuum line you unplugged and the idle should come back. Change your air filter and the map sensor. check for correct coolant level and replace the coolant temp. sensor. This sensor affects cold starting and idle through the ECU (open loop mode, rich fuel mapping and 1200 rpm idle) It should go to closed loop mode in the ECU once engine warm up is achieved ( lean fuel mapping and normal 900 rpm idle). Do not unplug anything else till you perform an OBDII scan of the stored fault history

Jun 14, 2017 | Chevrolet Sprint Cars & Trucks

1 Answer

1998 range rover p38 2.5 dse auto engine stalls

Sounds like something is overheating then and possibly a sensor. Not familiar with Rovers but might be a problem with the CAS and/or CPS which tells the ECU the motor is running and when to fire. Also maybe the IAC is bad and when you go from throttle to idle it can't control it and allows it to die.

Nov 29, 2009 | 1998 Land Rover Range Rover

1 Answer


Hello dholland...The 2 most common stalling problems on this engine is a failing crankshaft position sensor, or a Powertrain Contol Module. Usually the stalling, and rough idle occur after engine warm up. You can inspect and clean the connector terminal to the crank sensor, sometimes this is the problem. Clear all fault codes. If codes return, then proceed with another scan and correction as needed. That would eliminate doubt.

May 16, 2009 | 1998 Dodge Dakota

1 Answer

1998 Impreza 2.0 non turbo wont idle properly

Lots of things it could be. Egr valve sticking, a hose that came off, a bad sensor for airflow, or even throttle position sensor.

Intermittent nature seems to point to something sticky or loose.

May 15, 2009 | 1998 Subaru Impreza

1 Answer

1983 volks rabbit 1.6 L starts o.k. but stalls when warm low rpm

This is caused by a faulty temp sensor, look at the top of the engine coming out of the head right near the distributor there is a coolant housing with a coolant line which should have one maybe two sensors one will be black (square with 2 to 4 wires) the other one will be blue. If yours only has one connector then disconnect it, start engine...the engine may idle higher than normal drive it till it warms up or to the point where it would normally stall, if it doesn't stall then replace the sensor and problem solved.

If you have two sensors, black one and blue one, its been awhile for me but disconnect one or the other, one of them is your temp gauge sending unit can't remember if its the blk one or blue one. But try that.

Mar 18, 2009 | Volkswagen Rabbit Cars & Trucks

1 Answer

1998 GMC sierra 5.7 warms up to violent shut down

I Would Look Into ECM Probled As It Takes over when the Engine reaches 195-220 Deg the ECM Takes Charge of Timing ETC.

Jan 31, 2009 | 1998 GMC Sierra

1 Answer

Hi i have an audi a4 1.8 1996. When i start the car up from cold it stalls but when it is warm its seems to be fine. Does this mean theres a problem with the idle valve.

It could actuall be a couple things. A relay could be frozen, fuel lines have moisture and need to get a bottle of isopropyl, Could be the cold start sensor on an injector, could be loose vacuum hose.

Jan 29, 2009 | 1998 Audi A4

1 Answer

1998 Audi A4 1.8 On the back of the head there is a sensor which I take to be the temperature sensor. It has a white male multipin plug with a horseshoe clip. There are no wires or female connection for...

If you haven't done any tune-up for a while I would start with new set of plugs after that maybe even new spark plug wire set. It could be sensor for a gauge you may not even have. But you can always call the dealer ask for the service department and describe the part and the location.
Maybe a new fuel filter if you haven't replaced it for thirty thousand miles. Good luck.

Dec 12, 2008 | 1998 Audi A4

3 Answers

1998 Rodeo TF Series 2WD 5-speed manual

vacuum leak......bad tps.......bad mass airflow meter system........any of those are suspect...... also check for bad ground at battery to be sure all is not computer freak out from bad readings ...good luck

Oct 24, 2008 | 1998 Isuzu Rodeo

Not finding what you are looking for?
1998 Audi A4 Logo

Related Topics:

210 people viewed this question

Ask a Question

Usually answered in minutes!

Top Audi Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22059 Answers


Level 3 Expert

71231 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

13732 Answers

Are you an Audi Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides