| Re: 91 Corvette Convertible fuel pump issue |
Subject: Re: 91 Corvette Convertible fuel pump issue by Matatk on 2013/8/11 22:36:12 Tommy - As far as I know, the fuel pump relay for the 1991 is located under the dashboard in a 5-row bank of relays: http://www.corvetteguruforum.com/modu ... ewtopic.php?post_id=44904 I find relays either work or not, usually not intermittent - but I have seen really old ones that must have had corrosion that didn't work until I tapped on them. I believe there is a delay on my 89 if you turn the car ignition on the fuel pump energizes, but then if you turn if off and turn it back on immediately it doesn't. I don't recall exactly. So if you are suspecting the fuel pump the #1 diagnosis point is to check the fuel pressure at key on and when cranking and running. If you are getting zero fuel pressure then you have 1) bad pump 2) power problem to the pump 3) fuel delivery problem. You can manually turn on the pump by running a 12v power line directly from the battery to terminal G on the ALDL connector.  Run those tests and let us know. Matthew |
