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emilyzhang
emilyzhang
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Journal for emilyzhangJournal for emilyzhang
Jan
26
Happy
In this entry: step-by-step recommendations for restoring the performance of the N53 engine.

Available diagnostics tool: ISTA D/

Symptoms: increased fuel consumption, permanent vibration, uneven performance, low-quality idle.

Notes

1. If it is possible, use INPA for F series to diagnose these engines. Unfortunately, ISTA D/ gives very limited information, which can be insufficient in some cases. The manufacturer of the car has decided to hide the information regarding its problems from the users of the car.

2. In this entry, the following case is described: no error messages in the DME error message memory (or there is a 12C401 error message if the NOXEM is installed), but the performance of the engine is unsatisfactory. In situations, when the error messages are recorded in the DME error message memory, use the option “Calculate test plan” of ISTA D/ and prevent the obvious problems at the first hand.

3. In addition to the BMW Diagnostic Tool ISTA D/ tool, you will need also ELM 327 adapter with the required software to read the Misfire counters, which are reported only in OBD Mode 6 (and are not available in ISTA D/ ).
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