will a '93 MAF work on a '95?
Probably not. The '95 uses the B6304FS2 engine. The '93 uses the B6304FS engine. MAF parts numbers are different. One is listed for '92 - '94, another for '95 only and a third for '96 - '97. However, some of the '95s did have the earlier engine. Check your VIN for the engine code, positions 6 & 7. 95 is the earlier engine and 96 the later.
A quick insight to how the MAF works. It uses the "hot wire" principle. A constant voltage is applied to a heated wire. This wire is positioned in the air stream and is heated by the electrical current that the voltage produces. As air flows across it, it cools down. The heated wire is a positive temperature coefficient (ptc) resistor. Its resistance drops when its temperature drops. The drop in resistance allows more current to flow through it in order to maintain the programmed temperature. This current is changed to a frequency or a voltage which is sent to the ECU and interpreted as air flow. Adjustments for air temperature and humidity
are taken into consideration since they also affect the temperature
of the heated wire.
It is possible, therefore, that for the first few seconds the MAF is not sending data to the ECU.
Work was good - retirement is better.
1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.