SOURCE: engine will not rev above 3000 rpm
Inadequate fuel pressure, change the fuel filter first, make sure the car sits for at least two hours before replacing the fuel filter because these fuel lines are under high pressure during the time of operation. The pressure usually decreases over time in the lines but wear safety glasses just the same, I would recomend depressurizing the fuel system first, buy a Haynes repair manual for detailed procedure to be safe. If problem persists go to Auto Zone and ask them to check for trouble codes these codes if present may instuct you in detail to replace the MAF sensor or give you a code that must be looked up to find the problem.
SOURCE: p1613 fault code & engine will not rev over
Crank sensor or engine speed sensor is faulty.
Fault:
Irregular power loss on accelerating
The speed of the engine is limited till 2500rpm
Frequent loss of crankshaft position sensor signal
Cause:
It is caused due to leaking from thermostat housing into crankshaft position sensor harness multi-plug
Remedy:
Check and clean the crankshaft position sensor harness multi-plug contacts. Rectify the engine coolant leak from the thermostat housing if found. Take a note of the engine coolant level and monitor it for changes, showing a leak is indeed occurring.
SOURCE: 2004 audi a4 p1297 at idle runs with a missifre
if you have the 1.8l engine, you may have a bad coil pack.
SOURCE: Pajero 3000 Efi doesn't rev over 3000 - 3500 rpm
Well you already got the answer, it is the air mass flow unit sensor that is faulty, replacing it and clearing the error codes will solve the problem.
SOURCE: 4D56 turbo diesel engine in
Welcome to Fixya
Error 41 is the butterfly spindle in the intake manifold just below where the hose from the intercooler joins. It should be open when engine running if it is closed it will cause boost issues and running problems.
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