Parts for your 2007 Mazda Premacy-Map sensor

2007 Mazda Premacy MAP sensor: used or not?

For a 2007 Mazda Premacy, whether a MAP (manifold absolute pressure) sensor is relevant depends on the engine. Technical sources for the CR-series Premacy/Mazda 5 show that the 2.0 and 2.3 petrol MZR engines (LF/L3) are mass‑air‑flow (MAF) based and are not fitted with a separate MAP sensor. By contrast, the 2.0 MZR‑CD turbo‑diesel uses a MAP/boost pressure sensor for charge‑pressure control and EGR monitoring.

Technical sources referenced:

• Mazda 5 (CR) Workshop Manual 2006–2008, Mazda Service Information – LF/L3 petrol engine management lists the Mass Air Flow (MAF) sensor and related circuits, no MAP sensor is specified for these petrol engines.
• Mazda Premacy (CREW/CR3W) EPC parts catalogue – LF‑VDS petrol intake diagrams show the MAF at the air cleaner with no MAP sensor on the manifold.
• Haynes Mazda 3 &, 5 Petrol (2004–2010) manual – engine management overview describes a MAF‑based load strategy on 2.0/2.3 petrol, MAP/boost sensing applies to diesel/turbo variants.
• Mazda MZR‑CD 2.0 Diesel Workshop content – details a boost/MAP sensor used for turbo control and EGR feedback.

Why petrol Premacy models don’t use a MAP sensor: Mazda’s LF/L3 petrol engines of this era calculate engine load from a hot‑wire MAF sensor in the intake duct. With the MAF reading actual mass airflow, the ECU can tightly manage fuelling and ignition using inputs from throttle position, intake air temperature and oxygen sensors. On a naturally aspirated setup, this MAF strategy delivers stable idle, smooth part‑throttle driveability and reliable emissions control without needing a separate manifold pressure input. The diesel, being turbocharged, requires manifold pressure feedback (MAP) to manage boost, EGR flow and smoke control, so a MAP sensor is fitted on those variants.

Quick pointers for owners and workshops in Australia and New Zealand:

• If it’s a 2.0/2.3 petrol (common on NZ imports), expect a MAF on the airbox snorkel and no stand‑alone MAP on the manifold.
• If it’s the 2.0 turbo‑diesel, there will be a MAP/boost sensor on the intake manifold or charge pipework, and it may need periodic cleaning due to soot/oil mist.
• Engine codes: LF/L3 = petrol MZR, RF7J/R2 diesel = MAP/boost sensor fitted.

Popular questions

Does a 2007 Mazda Premacy have a MAP sensor?
On most 2007 Premacy petrol models (2.0/2.3 MZR), no. They’re MAF‑based and don’t run a separate MAP sensor. The 2.0 turbo‑diesel variant does have a MAP/boost pressure sensor.

Where is the MAP sensor on the diesel 2007 Premacy?
On the diesel, the MAP (boost) sensor is typically mounted on the intake manifold or charge pipe near the intercooler outlet. It reads manifold pressure so the ECU can control turbo boost and EGR. It’s a small sensor with a plug and a port exposed to intake air.

What symptoms point to a faulty MAP sensor on the diesel?
Common signs include low power, limp‑home behaviour, excess smoke, rough running and fault codes such as P0105–P0108. A soot‑contaminated sensor can often be cleaned with electronics‑safe cleaner, a failed one should be replaced and the system checked for oil mist or EGR fouling that caused the issue.