Cranks but will not start

Hi and thanks for using 2CarPros.

If the security light is staying on or flashing while you try to start the vehicle, yes. If it doesn't, no.

You replaced a lot of parts. Have you checked for spark and fuel to the engine? Does the engine sound normal when cranking? Can you describe what happened prior to it not starting?

Take a look through this link. It discusses the most common causes of a crank no start condition.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Let me know if that helps and the answers to the questions.

Take care,
Joe

Welcome back:

If the immobilizer is shutting it down, there is no way around it. Here are the directions for testing it, but I really question if that is the issue. I believe the fuel pump wouldn't be working if the anti theft/immobilizer had it shut down. Regardless, here are the extensive direction for testing and inspecting the immobilizer:

ANTI-THEFT IMMOBILIZER UP TO 06.01, ON BOARD DIAGNOSTIC (OBD)
Anti-theft Immobilizer, On Board Diagnostic (OBD)

General information

Immobilizer functions supported by:
- control electronics integrated with instrument cluster
- a warning light for anti-theft immobilizer - K117- in instrument cluster (speedometer display)
- an adapted engine control module
- an induction coil on the ignition lock
- Adapted ignition keys with electronic components (transponder and response reader memory)

Malfunction recognition and Diagnostic Trouble Code (DTC) display via warning light for anti-theft immobilizer -K117-

An intact immobilizer system is indicated by the warning light for anti-theft immobilizer -K117- lighting up and going out after approx. 3 seconds when the ignition is switched on.

When the ignition is switched "on", the warning lamp flashes or lights up continuously to indicate a malfunction in the system when:
- Adapting the ignition key has been carried out incorrectly
- No transponder (response reader memory) is present in ignition key.
- An unauthorized ignition key is used.
- An unauthorized engine control module is detected.
- A malfunction in the induction coil of anti- theft immobilizer -D2-.
- A malfunction in the data wiring is present.

The warning light for anti-theft immobilizer - K117- does not light up after switching on ignition:
- The immobilizer control module has detected an authorized key.
- The immobilizer control module has not detected an incorrect engine control module.
- The immobilizer control module is currently "adapting keys" and after adapting the keys no malfunction has occurred.

To troubleshoot, perform the On Board Diagnostic (OBD) program and retrieve the stored information with either the VAG 1551/1552 Scan Tool or VAS 5051 Vehicle Diagnostic, Testing and Information System.

____________________________

Have you checked to see if there is spark? Have you checked fuel pressure? Even though you hear the pump, it may not be producing.

Let me know if I can help.

Joe

Sorry, I missed the spark reply in your prior post.

Here is what I need you to do. Since there is no spark and you have replaced so many parts, I need to know if there is an RPM signal. If you have a live data scanner, plug it in and go to live data. Crank the engine and see if there is a signal. If there is, we eliminated the crankshaft position sensor and will move on from that. If there is no signal, I will need you to recheck for trouble codes. Without an engine speed signal (crank signal) you lose spark and it won't run.

Let me know.

Joe