Overheating, Engine Misfire, Oil Light, Coolant Light

Asked by Jun 29, 2016 at 10:14 AM about the 2003 Audi A4 1.8T Quattro

Question type: Maintenance & Repair

I bought this car less than a year ago from a dealer. It was
fine when I bought it but after driving it a couple times it
began to have a miss in every cylinder and originally the
temperature gauge would rise up almost to Hot but then it
would go back down to the normal range, but now it stays
normal until I go over about 45 mph. Also the coolant and
oil light randomly come on, but it has oil and coolant.
I am wanting to sell this car so I'm wondering what needs
worked on/replaced to see if it's not too expensive to fix
before I sell it. Thank you!

5 Answers

10,995

Sell it as a mechanic special its $ to repair all this issues you won't recover your expenses on the Audi 1.8T

I know that, but some things I have suspected it of being is less than $100 for the parts and I have someone to do the work for free. I just need to know what people think it is, because it could be a number of things. I'm not going to fix the things that are hundreds of dollars to fix.

210

If coolant tank is full n still overheats replace temperature sensor n theres two of them should cost around 30-35$ for both... Sensor 1 is located at the top behind engine. To remove all u have to do is remove air hose connect to head gasket cover n its right below it n its green color, slide lock pin out n pull sensor out, make sure to remove black rubber seal too or O ring after clean good n inspect connector wire before putting it back... Senosor 2 located at buttom front driver side next to radiator mounted on coolant drain flange n color grey N for this 1 u actually have to drain coolant cause once u pull the sensor all the coolant n anything in there comes out so make sure to hav new coolant ready N ur coolant should be pentofrost sf red coolant.. U also should be able to flush while having both sensors out just turn car off use distilled water no mineral from cvs store 3$ a gallon 2 should do the job... Simply pour water from top sensor hole n everything come out or u can also use coolant tank. I recommend both for more clean... After put everything back N this should fix ur coolant problem.

210

For ur oil It just need new oil with new oil filter maybe oil too old or low but I recommend new oil change n car should be using 0-40 full/advance synthetic mobil1 for hot weather N 5-30 full/advance synthetic mobil1 extended performance for cold weather... U can buy the oil with mobil1 filter n have shop change it for 35-40$ or u can do it urself N it should fix it

210

For ur random missfire there are a couple of thing... Could be maf,vacuum leak,engine speed sensor/cam shaft ssensor fuel injectors,ignition coil n spark plug or bad ignition coil wires(sometimes they get old n start to crack open N its exposed N it happens to all 4 connector including all 4 fuel injectors connector too I recommend start inspecting connector wire first then work ur way down... To be honest car is worth it if DIY type person N also wont cost $ but will cost alot of ur time stop believing ppl talk about $ but its true if ur a take it to the shop type person I hope ur car start driving again keep us posted

Your Answer

Add photo

Related Questions

  • 2005 audi a4 1.8t 8 answers

    My car sounds like its rubbing in the front when I turn my wheels sharp at a slow rate of speed or when stopped and car is on. Also now started sputtering as of last night sounds like it wants to d...

    2005 Audi A4 1.8T

    -

    Maintenance & Repair

  • Oil pressure light 9 answers

    Hey, I just bought a 2006 a4 2.0 and the red oil pressure light keep coming on. I got the oil pan drop and clean pick up tube and change the oil and still th light comes on. Anybody know what could...

    2006 Audi A4 2.0T Quattro

    -

    Maintenance & Repair

  • The car will start but won't turn over 1 answer

    I have a Audi A4 2003 1.8t 5 speed manual car I have drove my car after I change the oil 5W 40 and now it won't start but was driving fine before I did my oil change and this is my first time using...

    2003 Audi A4 1.8T

    -

    Maintenance & Repair

  • 2006 audi oil pressure light 9 answers

    Brought my car in Multiple times because of the oil pressure light. They cannot find anything wrong with it. Any ideas?

    2006 Audi A4 2.0T Quattro

    -

    Maintenance & Repair

  • Oil Presure light Audi A6 4.0 1 answer

    What could be the cause of the low oil pressure light coming on

    2005 Audi A6 4.2

    -

    Maintenance & Repair

A4

Looking for a Used A4 in your area?

CarGurus has 12,413 nationwide A4 listings starting at $950.

ZIP:

Search Audi A4 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Audi A4 Experts

#1 Deathjam4
Deathjam4
Reputation 2,900
#2 FordNut
FordNut
Reputation 770
#3 lukeyramone
lukeyramone
Reputation 480
View All

Related Models For Sale

Used BMW 3 Series
1,533 Great Deals out of 39,676 listings starting at $1,495
Used Audi A6
144 Great Deals out of 7,551 listings starting at $2,495
Used Audi S4
57 Great Deals out of 904 listings starting at $3,450
Used Mercedes-Benz C-Class
827 Great Deals out of 31,306 listings starting at $2,200
Used Audi A3
64 Great Deals out of 6,444 listings starting at $3,400
Used BMW 5 Series
663 Great Deals out of 15,900 listings starting at $1,999
Used Honda Accord
1,082 Great Deals out of 76,813 listings starting at $1,395
Used Ford Mustang
582 Great Deals out of 41,214 listings starting at $1,699
Used Audi A8
41 Great Deals out of 1,814 listings starting at $3,967
Used Mercedes-Benz E-Class
523 Great Deals out of 21,651 listings starting at $1,450
Used Chevrolet Camaro
475 Great Deals out of 39,923 listings starting at $3,499

Used Cars For Sale

2017 Audi A4 For Sale
4 Great Deals out of 5,589 listings starting at $32,631
2016 Audi A4 For Sale
13 Great Deals out of 267 listings starting at $24,997
2015 Audi A4 For Sale
25 Great Deals out of 397 listings starting at $19,000
2014 Audi A4 For Sale
70 Great Deals out of 1,100 listings starting at $14,888
2013 Audi A4 For Sale
60 Great Deals out of 838 listings starting at $13,900