[pachadwick]

Hi Everyone,
I've had some trouble with engine "hiccups", I replaced the Lambda sensor which seemed to fix most of the problems, then I turned to my MAF. I purchased a replacement used MAF and I've now compared the original measured values.

Interestingly the "younger" MAF shows a consistent lower signal value than the "older" one. Does anyone have any idea whether this will make a difference or indeed what the values would be for a brand new MAF?

 

[iamhappy46]

If the hiccup was that the old MAF was causing the engine to run slightly rich, then that MAF was the problem. The newer MAF would give a lower reference voltage and cause the engine to rrun a little leaner, as more air enters the engine with less voltage output so the ECU injects a lesser amount of fuel for the larger air flow.

 

[THOR]

will make a difference as was explain by iamhappy46....a dyno or wideband should confirm this