Aux belt snapped

[Mnahoor]

I have a 2012 mondeo 2.0 tdci edge estate manual.

It's done 195000 odd Miles 

The belt snapped yesterday eve and it refuses to start up again. Any reason why?

I got a mechanic to come out he opened the timing cover and has recommended to change the belt and pulleys etc as well as the aux belt obviously. Oh yes plus water pump.

[Mnahoor]

Oh it's not like other cars when those belts snap you can drive without power steering etc

[TomsFocus]

It should start without an aux belt.  Only runs the alternator and AC pump on these.  Steering is semi electric but that won't work anyway due to the lack of voltage without an alternator charge.

The aux belt can take out the cambelt when it snaps, but you'll be left with engine damage if that's the case so just replacing the belt would be pointless.

You'd need further diagnosis done on it tbh.  We need to know if A) the battery is flat due to running without an aux belt and B) if the cambelt is still intact and hasn't slipped a tooth.

[Mnahoor]

So mechanic came down and checked timing which was out by 3 teeth and replaced the belt and other bits as well as aux belt still not starting.. 

He said he will look at the tappets..

 

[Mnahoor]

So rocker cover taken off and found 2 tappets damaged right by the cam shaft

[TomsFocus]

2 minutes ago, FiestaForever said:

I do apologise for the misinformation. I always thought the engine wouldn't start without an aux belt, but I guess it would, but not for long as the battery would likely die without receiving charging from alternator.

It depends on the engine.  On your car it'd overheat pretty quickly with the aux driven water pump so not recommended at all.  On this particular engine you could probably do half an hour or so on a good battery without lights etc on.

 

25 minutes ago, Mnahoor said:

So rocker cover taken off and found 2 tappets damaged right by the cam shaft

Replacing the cambelt without checking that was a waste of time I'm afraid.  The valves will be damaged as well.

[Mnahoor]

24 minutes ago, TomsFocus said:

It depends on the engine.  On your car it'd overheat pretty quickly with the aux driven water pump so not recommended at all.  On this particular engine you could probably do half an hour or so on a good battery without lights etc on.

 

Replacing the cambelt without checking that was a waste of time I'm afraid.  The valves will be damaged as well.

without check what exactly as im not qualified to knw.

 

[TomsFocus]

1 hour ago, Mnahoor said:

without check what exactly as im not qualified to knw.

 

Without checking for internal engine damage.  You might get away with one slipped tooth but at three teeth out I'd have expected internal damage myself.

The pistons will have hit the valves so you can either pull the head off and replace the damaged valves and tappets, then refit the head with new headgasket etc.  Or just give up on this engine and swap a good used one in. 

[Mnahoor]

So an update the mechanic apparently has broken a part after putting the engine back together I will attach pics.

Now he said it comes from the brake vacuum pump so I went and bought one but in my simple mind it doesn't look like it came out of this. 

Plus the car now reports fuel high pressure sensor issue and also cam sensor.

It only starts on starter spray and then cuts out. 

Note they didn't remove the head. 

[Mnahoor]

The round part that I've pictured shows some other metal has snapped off does anyone have a clue wtf this part is called please and would it stop an engine from starting up?

[TomsFocus]

It's the camshaft locator for the vac pump.

I'd look for a better mechanic tbh!

[Mnahoor]

so update to my headache car ATM

so parts that have been changed:

timing belt

aux belt

cam sensor

crank sensor

fuel pressure sensor

2 tappets

brake vacuum pump

so the following errors keep coming up:

==PCM DTC P1168:86-27===
Code: P1168 - Fuel Rail Pressure Sensor In Range But Low

Additional Fault Symptom:
 - Signal Invalid

Status:
 - DTC Present at Time of Request
 - Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

 Freeze Frame :
-GLOBTIM: 256206119 s - Global real time
-TOTDIST: 314314.0 km - Total Distance
-MAINECUV: 11.75 V - Main ECU voltage supply
-ESTSERUN: Yes  - Engine status - engine running
-ESTSECRK: No  - Engine status - engine in crank
-OUTTMP: 10 °C - External Temperature From Sensor
===END PCM DTC P1168:86-27===

===PCM DTC P0341:86-2F===
Code: P0341 - Camshaft Position Sensor A Circuit Range/Performance (Bank 1 or single sensor)

Additional Fault Symptom:
 - Signal Invalid

Status:
 - DTC Present at Time of Request
 - Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

 Freeze Frame :
-GLOBTIM: 256206116 s - Global real time
-TOTDIST: 314314.0 km - Total Distance
-MAINECUV: 12.25 V - Main ECU voltage supply
-ESTSERUN: No  - Engine status - engine running
-ESTSECRK: No  - Engine status - engine in crank
-OUTTMP: 10 °C - External Temperature From Sensor
===END PCM DTC P0341:86-2F===

===OBDII DTC P1168-P===
Code: P1168 - Fuel Rail Pressure Sensor In Range But Low

Status:
 - Pending - malfunction is expected to be confirmed

Module: On Board Diagnostic II

 

any help guys?