[Gmecm] MAP troubleshooting.

[Steve Ravet]

	From: gmecm-bounces at diy-efi.org
[mailto:gmecm-bounces at diy-efi.org] On Behalf Of Tali Orlov
	Sent: Wednesday, September 21, 2005 6:33 AM
	To: gmecm at diy-efi.org
	Subject: [Gmecm] MAP troubleshooting.
	
	
	HI all. 

	 

	I am now in the process of converting my Jeep CJ8 carbureted 258
to EFI. 

	I bought at the junk-yard TBI system from GMC Safari truck, 1989
, 4.3 V6 .

	 

	I connected my laptop to the ECM with ALDL I/F , and I saw that
the MAP sensor was giving a constant value. 4.4 Volt.

	I did not connected the MAP sensor vacuum port to the TBI yet
because I am waiting for the manifold adapter, but I gave vacuum to the
sensor with my mouth and also by connecting it with a hose to the bottom
of the carburetor, below the throttles. 

	 
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If you are sure you've wired the +5, ground, and signal wires correctly
then it sounds like you've got 2 bad sensors

--steve