air flow meter
#1
air flow meter
My air flow meter is sticking I think. Went thru all the fuel system and tanks. getting good flow and pressure. After I stop a few times I loose pressure or power. started messing with the flapper on the air flow meter and noticed that it is a bit sticky. Im not positive this is the problem but fairly sure. Its really hard to tell but as I was messing with it as it was running it did the same thing so I'm asumming that its the problem. Any one else come accross this before?
BTW it is a 1985 XJ6 Vanden Plas.
BTW it is a 1985 XJ6 Vanden Plas.
#2
Join Date: Mar 2008
Location: Pacific Northwest USA
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Well, the AFM has two main functions:
1) An internal switch activates the fuel pump circuit when the flapper is opened. The fuel pump, of course, provides pressurized fuel to the injectors
2) The Air Flow Meter sends a signal to the ECU. The signal varies according amount/degree that the flap is opened. The ECU uses this signal to decide long low the fuel injectors should stay open.
The flapper should not feel sticky. There might be a mechanical problem inside, or perhaps the resistor track is very badly worn
In any case if fussing about with the AFM causes an engien stall it's a fair bet that you've found the problem. Do check electrical connectors first.
Used AFMs are not expensive. I just sold one on Ebay for something like $25
Cheers
DD
1) An internal switch activates the fuel pump circuit when the flapper is opened. The fuel pump, of course, provides pressurized fuel to the injectors
2) The Air Flow Meter sends a signal to the ECU. The signal varies according amount/degree that the flap is opened. The ECU uses this signal to decide long low the fuel injectors should stay open.
The flapper should not feel sticky. There might be a mechanical problem inside, or perhaps the resistor track is very badly worn
In any case if fussing about with the AFM causes an engien stall it's a fair bet that you've found the problem. Do check electrical connectors first.
Used AFMs are not expensive. I just sold one on Ebay for something like $25
Cheers
DD
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