Problems fixed: Audi, Chrysler, Citroen

In this article: Leading technical supplier Autodata shares fixes to three common problems found in passenger cars

The problem

A customer has a 2015 Audi A3 2.0 diesel and they are complaining of a squeaking noise from the engine bay when the engine is idling. We have heard the squeaking noise when starting the engine from cold but are having difficulty finding the source of the noise in the workshop.

The fix

We’re aware of this fault affecting A3 models 2013-18 with CRLB/CRLC engine codes. The cause is due to an unsatisfactory design of the timing belt tensioner pulley which adversely affects the wear of the timing belt, creating the squeaking noise. Inspect the timing belt tensioner (Fig.1). If the timing belt tensioner is NOT made by Litens, fit a new timing belt tensioner. It is strongly recommended that if a new timing belt tensioner is fitted, a new timing belt is also fitted. Carry out a road test to ensure noise has been eliminated.

The problem

We are having difficulty diagnosing a non start issue on a 2011 Chrysler 300C. The engine cranks but fails to start or starts and immediately cuts out. We have carried out some basic checks on the air and fuel systems and checked for any stored trouble codes, trouble code B1A80 is stored in the fault memory. We have carried out some basic wiring checks but we haven't found the cause of the fault.

The fix

We know of a fault affecting Chrysler 300C models built 07/07/11-21/03/12 with steering column electric lock. The cause of the problem is due to the steering column electric lock being misaligned and not disengaging correctly. Disconnect the battery earth lead. Remove steering column assembly ensuring the steering remains centralised. Inspect the steering column electric lock to see if it is correctly seated. If not, loosen the retaining nut, re-position the steering column electric lock and retighten the retaining nut to 20 Nm (Fig.2). Refit steering column assembly. Reconnect the battery earth lead. Erase the trouble code and check operation of the steering column electric lock to ensure the fault has been rectified.

The problem

We have a 2013 Citroën DS3 in our workshop with running issues. The vehicle lacks engine power and the engine speed will not increase above 1,500 rpm. We have carried out some basic checks on the air and fuel systems but have not found the cause of the fault.

The fix

There is a known fault to check for on DS3 models with the EP6CDT (5FV) engine code. The probable cause of the fault is likely to be due to damaged teeth on the crankshaft position (CKP) sensor reluctor (Fig.3). Check the crankshaft position (CKP) sensor reluctor teeth for damage and realign teeth if necessary. Carry out a road test to ensure the faults have been rectified.