165 MAF troubles

[Daniel Joseph Kunnath II]

	Hey all,


	This is the lowdown on what I need help with.  My Bosch hot-wire
MAF for an 89 L98 Camaro is acting up.  Well really, the engine is acting
up and I suspected the MAF was the culprit.  Where I really have trouble
is during cold start-up.  The engine will stall and I can't get it to idel
properly.  I adjusted the TPS and replaced the IAC valve, but that didn't
do the trick.  I then took my old voltmeter to the MAF and checked it out.
When the harness is unplugged out of the MAF and the ignition is on, I get
12V from the power relay (correct) and I get 5V from the MAF sensor input
(correct).  The kicker is when I plug the harness into the MAF.  After I
power up the MAF, I measure 2.2V at both the computer and the MAF.  When
the engine is idling with the MAF connected, I get 0.4V at idle (correct),
but the thing pegs out at near 2.2V @ 4500rpm.  According to everything
I've ever seen, engine off ignition on should be 5V and engine on should
go from about 0.4V at idle to near 5V at WOT.  With the low redline of the
TPI engines, I'd imagine that I should be pulling near 5V @ 4500-5000rpm.  

	The engine will run with the MAF connected, and it idles steady
even during the old broomstick test.  I can't figure out where the problem
lies...could it by the sensor grounds?  I can't find enough information on
the insides of this MAF to dig into it.  I don't want to spend the ~$400
for a new one either if I can help it.  I'd like to swap another in to see
what happens, so possibly would one of you who are doing the MAF->MAP swap
like to get rid of your working MAFs?  

	Any insight is appreciated.  I've had this problem ongoing for
weeks now and I want to get it resolved.  I got to get back out on the
road!

	Thanks,

	DK