[Gmecm] 7747 stumbling acceleration when cold

[Aaron]

We have discussed the adapter plates before.
They are notorious for creating a vacuum leak were the TB and IAC gasket go
over one of the bolts. 
The IAC sometimes even hangs over the adapter plate, so there is no seal to
the gasket.

What is the IAC position at idle open loop and closed?
Map voltage?
TPS voltage?
Fuel Pressure on the supply side?
Fuel Pressure on the return side?
Have you looked at the fuel spray pattern from the injectors?
	I like using a dial back timing light to strobe the spray to see it
more clearly.

From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf
Of Charles McDowell
Sent: Monday, November 29, 2010 3:09 PM
To: Eck, Joel
Cc: gmecm at diy-efi.org
Subject: Re: [Gmecm] 7747 stumbling acceleration when cold

I'll double check my logs, but I think my temp is good.? Bear in mind that
it's not like this thing ran well once and stopped.? It never worked well
since I installed it.? I have an Edelbrock performer quadrajet carb manifold
with an adapter for the TBI.? Thanks.
?