20 Most Recent 1998 Audi A4 Questions & Answers

The serpentine belt routing diagram for 1998 Audi A4 Quattro 2.8 liters V6 engine:


CS = Crankshaft
F = Fan pulley
Gen = Alternator
T = Tensioner pulley
AC = Air Conditioning
PAS = Power Assisted Steering

1998 Audi A4 | Answered on Sep 08, 2019

If it will crank over, it can be started. Only IF it is getting fire to the plugs AND fuel to the cylinders. What you can do is, have a spark plug wrench ready to remove the easiest to get to spark plug, crank ti over a few times like you'r trying to start it, shut the switch off and pull the spark plug quickly. IF the tip of the plug at the electrode is wet, it's getting fuel to start. Fuel delivery is fine. Now, before you put the spark plug back in the head, put the plug on the end of it's consecutive plug wire end, hold the electrode on the engine to ground it and have someone crank the engine over. If you see a spark happen at the electrode, your getting fire also. But for it to NOT start, one of the two have to be missing. If both are present, and still no start, then, it could be that the cold start mode from the computer is not engaging and not enough fuel to the cylinders. To check that, remove the wire plugged onto the temperature sensor and ground it to the block. Crank the engine and see will it start. If it does, you have a faulty temperature sending unit/sensor. You've now tried as much as would be any required start procedure and it should be running.

1998 Audi A4 | Answered on Feb 05, 2019

Check this website you find there fuse box diagram and description for Audi A4


1998 Audi A4 | Answered on Jun 30, 2018

I tried the DIY service and repair manuals from a website and it actually helped me repair transmission problem
in my ford explorer. it wont move forward or reverse, engine is good both solenoids for forward and reverse work.
I don't have much technical knowledge but I just followed it step-wise, and works perfect! got it from www.reliable-store.com

1998 Audi A4 | Answered on Mar 23, 2018

go see a transmission shop or your local dealer . they made these cars without dipsticks for a reason .

1998 Audi A4 | Answered on Jan 28, 2018

Hi You may have to replace the system pressure cap. Also check to see if the system is under pressure soon after starting the engine if it is it could be Head Gasket, my money is on the anti-free reacting with the rad cap (for your sake), have a look at the over flow hose to see if the end is whet after a short drive. Let me know how you get on and any more info that would help me this end. Regards David

1998 Audi A4 | Answered on Dec 25, 2017

The brown wire from the downstream sensors is broken or otherwise not connected to the computer. Check for damage to the wire.


1998 Audi A4 | Answered on Sep 12, 2017

Was the brake line removed ? There is no reason a brake line needs to be replaced unless the line was broken or damaged.
One way to check if your car has sensors, is to look for a harness that runs and is secured on the strut. Also check the hub, there is usually a slot in the back where the sensor is mounted.
Some vehicles come without brake sensors, best thing to do is call local dealer, supply them with your VIN and ask them if it comes with sensors.
What were the repairs done to your brakes ? What is the problem after the repair was done ? You may only need to bleed the complete system if calipers were replaced.

1998 Audi A4 | Answered on Jun 17, 2017

Is this a diesel?

1998 Audi A4 | Answered on Apr 08, 2017

You have the wrong bulb in!

The bulb with the offset pins is a stop / tail bulb, it has two elements and two contacts on the bottom. Typically they are 5 watts element for the taillight and 18 or 21 watts for the stoplight. The offset pins make it so it will only go in one way so the contacts line up to the correct function of Stop light or Tail light. Some cars have combination stop tail bulbs, some have a single 18 watt bulb at the back. The FRONT light indicators are always a single element.

You can see the two elements, the two contacts and the two offset pins in this image.

Pearl PAB01 380 12V 21 5W Stop Tail Bulb Pack of 10

1998 Audi A4 | Answered on Mar 14, 2017

You checked the fuel pump for power and verified there is no power to the pump? Remember the pump only runs for about 1 second unless the engine starts.

1998 Audi A4 | Answered on Sep 14, 2016

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