welshwarrior Posted September 25, 2015 Report Share Posted September 25, 2015 Ok my car went into the body shop for some accident damage repair. They replaced a couple of panels and sprayed some others and put the whole car in the oven to harden the paint. As they try to drive it back to me it went into limp mode and they say the EGR valve has failed. Now the car has not suffered rough idling or loss of power etc the symptoms I'd expect. Could the body shop have caused this in anyway? Quote Link to comment Share on other sites More sharing options...
robbiep Posted September 25, 2015 Report Share Posted September 25, 2015 Very unlikely. Though it is (theoretically) possible that the increase in temperature with the whole car being in the oven would cause the existing carbon to 'bake' and freeze the EGR valve, that would in reality be no more than the temperature of the valve with the engine warmed up. It might be possible that the heat has expanded /contracted an electrical connection which takes readings from the EGR valve. No readings = same result as a stuck valve. Quote Link to comment Share on other sites More sharing options...
shaun4860 Posted September 25, 2015 Report Share Posted September 25, 2015 I put a blanking plate in mine after it did the same as yours, Never ran as good, 10 minute fix and £10 for the plate Mine was similar to this but mine is model specific http://www.ebay.co.uk/itm/EGR-blanking-plate-Ford-Mondeo-Transit-Jaguar-X-type-2-0-2-2-TDCi-EURO4-/161355161951?hash=item259184615f Quote Link to comment Share on other sites More sharing options...
subsonicnat Posted September 25, 2015 Report Share Posted September 25, 2015 Either it coked up or just plain thrown a wobbly.."They Do".. But as suggested, Blank it off, AA man gave me one, No more trouble then from that area.. When people break Down, They just fit the Universal Plate, Has Multi Holes to Accomadate different Models of Car.. Get Codes wiped, or it will SEE The Same Problem, Even though its NOT There.. Quote Link to comment Share on other sites More sharing options...
TIGHTCHOKE Posted September 25, 2015 Report Share Posted September 25, 2015 It seems very unlikely that a paint bake would be of sufficient temperature to cause an EGR system to fail. They normally fail due to poor quality fuel and insufficient revs to clear them out on a weekly basis. Quote Link to comment Share on other sites More sharing options...
Cosd Posted September 25, 2015 Report Share Posted September 25, 2015 What car and how old? The oven wouldn't have caused this, i would say coincidence is the only issue you've had. Quote Link to comment Share on other sites More sharing options...
shaun4860 Posted September 25, 2015 Report Share Posted September 25, 2015 Get Codes wiped, or it will SEE The Same Problem, Even though its NOT There.. Mine has a 10mm hole in the centre to avoid the need to keep getting the fault codes I think it says something about that in the link I posted Quote Link to comment Share on other sites More sharing options...
welshwarrior Posted September 25, 2015 Author Report Share Posted September 25, 2015 Thanks lots to think about its an Audi Q7 3.0l tdi 2011. Mostly motorway mileage and no rough idle or lack of power before it went I. Quote Link to comment Share on other sites More sharing options...
Rupert Posted September 25, 2015 Report Share Posted September 25, 2015 Did the pressure wash the engine bay before painting? I would clean, dry and put contact spray on the local terminals, get codes cleared and go for a drive. Quote Link to comment Share on other sites More sharing options...
rodp Posted September 25, 2015 Report Share Posted September 25, 2015 Probably topped itself with the shame of cheating the emission laws :lol: Quote Link to comment Share on other sites More sharing options...
jam1e Posted September 25, 2015 Report Share Posted September 25, 2015 Mostly motorway mileage and no rough idle or lack of power before it went I. +1 I had one go on the way to work one morning. No rough running, or anything else to indicate a problem. Great one minute, limp mode the next. In fact, it wouldn't run at all! Quote Link to comment Share on other sites More sharing options...
welshwarrior Posted October 1, 2015 Author Report Share Posted October 1, 2015 The plot thickens then works out thank god. The garage (main dealer) ran a guided diagnoist on the car and confirmed it was the EGR valve I decide to get it repair in a garage I have more faith in. So the trailered the car back to me drove it off the trailer then it conked out. I thought I'd have a look that evening see why there had been a bit of black smoke. On opening the bonnet I found the main dealer had forgotten to put the car back together and driven it without manifolds etc. They denied everything when phoned Audi UK got involved and car is being repaired FOC included the other issues that showed up after they drove it with loose bolts and manifolds. Quote Link to comment Share on other sites More sharing options...
popa bear Posted October 1, 2015 Report Share Posted October 1, 2015 My car went in for repair after a lady ran into my wife. When we were due to collect the car we were told we couldn't collect it as the car was dangerous as it had no brakes. The brakes were fine before going in for repair and because I kicked up a stink the repairer delivered the car back to me on a recovery truck. Now I used to be a mechanic and on inspecting the car I found the rear wheel cylinder had been pushed through the back plate and the wheel cylinder piston had pushed past the shoes letting the fluid leak out hence no brakes . Good job it happened there and not on the way home. When they had collected the car to repair it the straps they had put round the wheel to secure it onto the recovery truck had pushed and bent the wheel cylinder through the back plate. Not possible was the reply I got when I contacted them this is why I don't trust repairers Quote Link to comment Share on other sites More sharing options...
subsonicnat Posted October 1, 2015 Report Share Posted October 1, 2015 The plot thickens then works out thank god. The garage (main dealer) ran a guided diagnoist on the car and confirmed it was the EGR valve I decide to get it repair in a garage I have more faith in. So the trailered the car back to me drove it off the trailer then it conked out. I thought I'd have a look that evening see why there had been a bit of black smoke. On opening the bonnet I found the main dealer had forgotten to put the car back together and driven it without manifolds etc. They denied everything when phoned Audi UK got involved and car is being repaired FOC included the other issues that showed up after they drove it with loose bolts and manifolds. That is one Heck of a Recommendation Mate: Quote Link to comment Share on other sites More sharing options...
drut Posted October 2, 2015 Report Share Posted October 2, 2015 Although maybe not relevant now,as I sold up & retired(injury) in 2002,my trade association at the time sent me an info bulletin on the subject of low-bake paint oven temps causing engine management faults/issues. Quote Link to comment Share on other sites More sharing options...
Pistol p Posted October 3, 2015 Report Share Posted October 3, 2015 If the vehicle required welding, did they disconnect or use a surge protector on the battery? Quote Link to comment Share on other sites More sharing options...
welshwarrior Posted October 7, 2015 Author Report Share Posted October 7, 2015 Car back now drives well but waiting to see slight smell of exhaust fumes but been asked to give it a week. Quote Link to comment Share on other sites More sharing options...
Paul223 Posted October 11, 2015 Report Share Posted October 11, 2015 Exhaust fumes where? If in the engine bay or passenger compartment I think I'd take it back Quote Link to comment Share on other sites More sharing options...
subsonicnat Posted October 11, 2015 Report Share Posted October 11, 2015 Car back now drives well but waiting to see slight smell of exhaust fumes but been asked to give it a week. Wonder if the Gasket is leaking, or not tightened up properly.on the Manifold. As Said,, if it persists take it back.. Quote Link to comment Share on other sites More sharing options...
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