Re: MAF Mess

[JTesta1966@aol.com]

In a message dated 4/19/00 9:48:27 PM Eastern Daylight Time, bshaw@connix.com 
writes:

<< That says to me it's a sensor problem,  not an injector problem. Does it 
mean
 it's the MAF?   Will the ECU ignore ALL the sensors while running with the 
SES
 on,  or just the one that set the error code?  Is there a way to test the 
MAF to
 see if it's working properly?
  >>

If you havent hacked the chip and maybe fudged a value, I'd suspect a fuel 
pressure problem. Assuming the sensor is good, and you've verified a nice 
true uniform square wave out of the MAF, unplugging it puts the car in backup 
fuel mode. You should check for vacuum leaks and possibly check fuel 
pressure. Remember, 5 psi too low is enuf to make a TPI motor run like crap. 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Testa                                         TType86 on #BuickGN
jtesta1966@aol.com                               buick.fiendish.net:6667
ASE Master Technician            NJ Lic. Motor Vehicle Inspector
L1 Adv Eng Perf Certified     NJ Licensed Emissions repair Tech
----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org