DEREKCO2

What is the problem?

Ok update on front doors not opening from key fob well I bit the bullet and took the door cards off removed the door lock took the little grey cover off and cleaned the linkages then used bicycle wet lube oil on the linkages and clips hey presto everything works

Take the car back it should still be under parts warranty 

Any ideas my front passenger door will not unlock using the remote all other doors are fine it opens from the inside but not the outside could it be the actuator or a fuse maybe 2008 A4 b8

C/V joints 35,000 miles or not I had an A6 Quattro had the same noise at 33,000 I ignored it . It had to be carried home get it checked at trusted garage 

Hello well I fixed the difficult starting it was a 60 amp fuse that should have been in place but had been pulled out by previous owner Bxxxxxx

Below is the engine wiring for CAGA engined aA4 S39 is the glow plug 50 amp strip fuse that is in the engine fuse box under the ECUB8 CAGA Engine wiring.pdf

A dirty great big 50 amp fuse S39 engine glow plug strip fuse it’s not on the battery it’s in the poxy fuse box so why is it missing that’s the next question 

Result  look a what’s missing in these photo 1 is my car the other is my next door neighbour car

Hi does anybody know what relay 643 is used for and relay 404 in my panel below the ecu are relays  457 ( glow plug module ) relay 643 (1 of ) and 4 relays 404 

More progress terminal 30 must have 12 volts ignition feed it does not but also found out there should be a relay j317 it supplies power to terminal 30 so could this be the fault anybody know the location of relay j317 ?

Ok further to my previous comments I have no feed to the glow plugs I hooked a circuit tester from the glow plug feed cable to earth no voltage in fact I have no voltage at terminal 30 in the relay housing this should be battery voltage 12 volts why have I not ? All fuses on the battery are intact . No fault codes are shown , Any thoughts please the car still starts but not without turning over for about 10 - 15 seconds

Seals on rear lights defective need replacing or use bathroom sealant remove lights and reseal job takes about 20 mins 

I agree with Gareth get another test done 

Ok further to my previous comments I have no feed to the glow plugs I hooked a circuit tester from the glow plug feed cable to earth no voltage in fact I have no voltage at terminal 30 in the relay housing this should be battery voltage 12 volts why have I not ? All fuses on the battery are intact . No fault codes are shown , Any thoughts please the car still starts but not without turning over for about 10 - 15 seconds

It’s behind the alternator there are 2 types fitted a single hose and a triple hose fitting

Possible fix I have been using Tesco diesel it does not contain an additive it’s also bio fuel which forms crystals in the fuel filter thereby restricting fuel flow , so am going to change the fuel filter then use a diesel anti wax additive to prevent the crystals forming fingers crossed, ps I am a retired HGV mechanic and have come across this before on trucks but never on modern cars 

Thanks as I am a retired diesel mechanic 🚌 public service vehicles I ain’t going to give up yet I have a brand new 457 glow plug module to fit plus I have a few avenues to investigate will keep updates coming for other members 

At the moment I have removed the glow plug module to test voltage supply I have checked the glow plugs resistance for all plugs is 0.1 ohms I have checked continuity of Reed wires to the plugs no breakages resistance is zero this reading is taken from the tip of the supply cables back to the module mounting socket. Should I have the ignition on when I test voltage from battery I believe this voltage goes through the engine management module before it gets to glow plug module ?

Engine turns normal no drop in battery voltage just turns then eventually fires after that car is fine , in the summer the car starts ok so am check supply feed starting with fuses in the boot on top of the battery then investigate forward 

If you have a fault code P2015 go to eBay and google P2015 repair bracket it solves the engine light 

On 1/11/2021 at 12:13 PM, Charlie1280 said:

I was actually told that was trade price so clearly I’ve overpaid there, what battery would you recommend? 

I don’t have very much knowledge on cars and this is my first car! It’s proving difficult to keep up with all its issues. Without sounding silly how would I find an auto electrician & any idea on how much it should cost to get a test. 
 

the mechanics I bought the battery from are meant to be coming out today but I fear won’t allow me to have a refund as I don’t think there’s anything wrong with the battery itself, I’ll also try and get over to a Halfords & see if they’ll check the condition for me. 
 

im also still trying to source a new inlet manifold, do you think I would be better of going to a garage to get this work done rather then with independent mechanics?

thank you for all your advise so far I appreciate it. 
 

charlie x
 

Don’t get an inlet you can get a bracket to fit the inlet flap the light is on because the throttle arm is travelling to far back also how old is the car 

Hello I own an Audi A4 2008 2.0ltr tdi CAGA engine code in winter the car is difficult to start (Summer it’s fine ) I replaced the battery , glow plugs and relay still difficult to start I have yet to test the voltage to the plugs the fuses in the boot above the battery are fine any thoughts would be gratefully acceptable .Derek