SEAT Altea - Intake Manifold Flap Motor

[k0pilashu]

How do I fix the throttle body motor problem? I recently replaced the EGR valve and throttle body... The engine is a BKD 2.0 TDI... It does NOT have a throttle body motor on the right side like other models.

 

[benio1980]

Solution proposed by the DDTSB:

P3103 Motor for Intake Manifold Flap (V157) Malfunction, This problem may be due to an intake air shutoff throttle fault. First of all check fuse F8 (before 2005) or fuse F24 (after 2005). These fuses cover both manifold flap and cooling fan. The fuse is located in the engine compartment fuse box. Typically, toothed wheels in the control unit to the flap have broken, or the throttle valve housing may be filled with oil.

 

[Nages]

When does the problem occur? At this age, they often have grounding issues from the battery to the body and from the body to the engine block. If the problem occurs upon initial startup, it's worth checking for a voltage drop during cranking. For example, this week, in a Jetta with a bad battery, I had a 2.9V voltage drop from the negative battery terminal to the engine block. This caused the car to start and then stall. The error code was also consistent. I planned to start by pinpointing exactly when the problem occurred, and then, using the wiring diagram, see if the voltage drop during cranking due to poor primary grounding contributed to this.

 

[susov8]

If you installed a non-original throttle body, this often happens, I have had this happen many times, try the original or a used one, but the original one.