Audi A4 Quattro Questions

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I had 13 trouble codes, fixed the temp sensor and it took care of 11 of them but car is still misfiring and hesitating. The other codes are transmision range circuit and communication code. What are those and would it cause misfiring? My car always was slow accelerating but then my battery went dead and when i jumped it it started to misfire. Also my reverse lights stay on all the time.


Gas cap light wwont turn off, replaced the gas cap already. How do i fix this?

What cause the check oil light& buzzer to come on and the level is ok.

My ABS lights and the Brake lights are on. I bleed the brake line and they are still on. Does this have anything to do with the ABS motor? Does anyone have any information about this.

it will not grab any gear i put it in knob move into gear but no transmission movement at all


What can cause my check engine light to come on?

I put a new power steering rack in and have bled the system but continue to have air trapped. It seems to be getting worse any suggestions?

When I start my audi it starts at 1400 RPMs and after a minute it goes down to 600 RPMs. But the car is very loud when running. I'm not sure if its the pullies or the barrings? If I go over 3000 RPMs while driving I can barley hear the person next to me talking.

when stepping on the gas at 20- 30 mph it hesitates and i feel a small shake when it changes gears. had the transmisssion fluid checked it was low , had it filled with the proper fluid , and it still seems to do the same thing???

My MIL came on and after taking it to a certified Audi mechanic, I was told that the timing belt should also get replaced, since practically the entire engine needs to be taken out. I had the timing belt last replaced in June 2007 and have since put 21,000 miles on the car. I currently drive less than 5,000 miles per year. Should I still replace the timing belt at the same time as the thermostat or can the old timing belt be put back on?

The speedometer did not work when I bought the audi.I am getting fault code p0501.i know it has to do with a sensor, but what sensor and where is it located in the car.

My coolant light shows up on the panel as soon as I start the car in the morning and disappears in 10-15 seconds. It it a major issue or just the sensor gone bad ?

I got the plug out of the transmission,cant seem to find out what weight of gear lub to put in it ?

I have a strange circular clip retaining the base metal of the existing lamp bulb. Not like all the other spring clamps of past. How do I get the thing off and on so I can change out headlamp bulbs?

i need gear brain box number of above mentioned car.

I bought a V-checker from www., it encounter "comm.error"
1 - Control Module Selection Screen OK
2 - Engine Electronics Selection Screen OK
3 - Can Bus Mode Selection Screen OK
4 - Can Bus Mode Communicate Screen OK
5 - Comm. error!

anyone can help me?

Just wanna know how long to replace engine wanna take it to a mechanic?

I replace both O2 censor upstream, brandnew by bosh but still a ligh come on and the code is PO411 second air injection incorrect upstream flow detected. how can this be ? does anyone have a problem like this and how was fix?

Throttle body position sensor location? And will that faulty sensor cause automatic shifting problems? 1

my throttle body is new, but when i driving the pedal get stuck i have to release it in order to acelerate to gain speed does any body have any clue? I have read the opposite of acceleration without the food on the pedle thank you in advence.

My light on my dashboard keeps coming on for headlight sensors. I have had 2 replaced. How often should these be replaced? The cost is $225. Ouch!

FM works good, just the AM is weak. Is there a fuse for a built in booster? this Audi has a window antenna, I think it is with the rear defogger wiring...
Your help is greatly appreciated...

how to replace timing belt

How hard is it to replace front axels on this car.

How difficult is it to change the CV Boot? No damage yet and no vibration or indication of problems.

where are the fuel filter and fuel pump and how do I get to them to change them? The car will start for a second or two but then dies, it acts like it is not getting fuel. The car sat for a while and when we tried to start it we had to give it a jump but that didnt work so we baught a battery and like I sad it tries to start but wont.

my transmission don't change gears only 1,2 don't gears on 3,4,5 the codes are ok,im goint to replaced and i will like to know the cost,the AAMCO shop wants $2,800 to fix the tranny,i find on online one tranny with 37,000 miles for $1,000 so i will like to know, how much is the cost to replaced, an please let me know what is better fix it or replaced,thank you,,,miguel

i got code po171 system too lean bank 1, i replaced all braded vacum hoses clean maf sensor, change air filter and reset the computer. But after running 30 miles the engine leght came back on. what else is the problem with this? does the o2 sensor got to do something about this?