Im Going To Burn This Motor Sharan Afn 110

[zorgman]

hi all

sharan 1.9tdi afn 110 engine 99 plate

well its getting to the point that the vw afn engine is the worst in the world for faults so see if u can help me out.

 

head completly rebuilt all new except cam.

new belts.

timed basic and with vag-com

all vac pipes changed

new pipe to ecu inc internal one

new n75

diode mod to map sensor (4.3v zenner) so it cant go over 4.3v.

tried diode mod on maf.

new maf.

i think ive covered everything here. the car is gutless and keeps going into limp mode throwing code 00575.

whats left that can do this fault also noticed and a new problem is wehen cars hot ie a 30mile run i had to wind engine for at least 10secs before it started.

when i rechecked belt timing it was 1 tooth out which retarted the pump but using vagcom ive got it spot on the centre line. instant start when cold and gutless but very little engine noise once warm tho it gets louder engine noise. im thinking that somewhere along the rebuild something has happened as when driving you can here what ill describe as diesel knock so coming down bank in 5th gear not as noisey so turned key off still in gear and its still there so can it be

A the cam is useless as it was pitted.

B has the new lifters failed.

anything please as im now sick of motor just that ride outr and my right foot is tingling due to the vibration etc off engine

[Dodger]

Three possible varieties of code 00575

 

http://wiki.ross-tech.com/index.php/00575

 

Which one have you got?

[Neils TDi again]

Sounds very much like a turbo vane fault, have you replaced the turbo ?

 

You have rebuilt the engine but you havent said why ?

 

If the rebuild was due to a belt failure and hence the collision of the valves to pistons have any of the displaced parts been blown into the exhaust ?

 

Any thing in the original fault that may have led to the turbo may have a bearing on it also if the valve lifters were not fully loaded with oil when the engine fired up first time you may have damaged them already, fill with oil and turn engine over by hand until oil pressure is measurable before trying to start can prevent this type of premature failure.

[marinabrid]

autodata disc gives the following reason for 00575

intake leak or blockage , maf sensor, turbo wastegate actuator/regulator valve, hoses interchanged or not connected or a fault in the wiring. hope this helps

[zorgman]

hi all

reason head was rebuilt was due to cam belt problem and it bent the inlet valves but i changed the lot just in case. all valves were intact so nowt down exhaust. im going to pull the rocker box off sat as im convinced that something is amiss with n#1 cly as its a noisey engine, a test i done was coming down a bank i turned ign off in gear and still had the same rattle i had wether driving it or not. poking about with my stethoscope its got more rattle on 1 then gets softer as i go to 4. checked on the injectors and rocker cover same sounds.

with regards to the fault 00575 i used my plug in tester for ease but will do it with vag com to get exact results.