the check engine light will come on only if the MAF is DEAD ! Totally DEAD, and goes to limphome mode, (with magic maf simulation)
stuck at 5v
stuck at 0volts
there is no DTC error for weak MAF (but there 02 stuck error)
do not confuse, old 1990s cars with USA cars 1996 and newer, the are not in the same league, at all, (apples and oranges)
OBD1 is simple and crude, it has no fancy fuel trim warning like the 1996+ do.
all your car has is the rare code 52 DTC, error. for stuck 02. that is it.
no advance fuel trim errors, like OBD2, has, (too rich too lean) sorry
the only test I have for maf is using leaf blower or huge shop vacuum cleaner to create, huge air flows.
I got 3vdc out with my shop vac.
I did not try for 4vdc, using a more powerful leaf blower (gas)
Suzuki does not publish the full spec, on this maf, ever. sadly.
but here is my educated guess at such a plot, (based on lots of MAF documents, I have)
my guess at flow. (we know the CEL lamp glows for MAF error stuck at 4.9vdc (so the dynamic ranges
2 to 4 volts out
my highest ever measured gm/sec air flow was 60. (was trying very hard to max out my MAF doing this test)
stuck at 5v
stuck at 0volts
there is no DTC error for weak MAF (but there 02 stuck error)
do not confuse, old 1990s cars with USA cars 1996 and newer, the are not in the same league, at all, (apples and oranges)
OBD1 is simple and crude, it has no fancy fuel trim warning like the 1996+ do.
all your car has is the rare code 52 DTC, error. for stuck 02. that is it.
no advance fuel trim errors, like OBD2, has, (too rich too lean) sorry
the only test I have for maf is using leaf blower or huge shop vacuum cleaner to create, huge air flows.
I got 3vdc out with my shop vac.
I did not try for 4vdc, using a more powerful leaf blower (gas)
Suzuki does not publish the full spec, on this maf, ever. sadly.
but here is my educated guess at such a plot, (based on lots of MAF documents, I have)
my guess at flow. (we know the CEL lamp glows for MAF error stuck at 4.9vdc (so the dynamic ranges
2 to 4 volts out
my highest ever measured gm/sec air flow was 60. (was trying very hard to max out my MAF doing this test)
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