Ndir

Although I do not have a 5.0 swap, I did swap the Ford 2.3T in my 91 Miata, so the installation should be about the same as the typical 5.0 swap. I have been chasing a problem where the voltage to the fuel pump drops after a warm restart causing high AFRs. I then decided to use the fuel pump wire on my universal microsquirt 2.3T harness as a trigger for a relay so I get battery power to the fuel pump, but the same thing happens; good voltage on a cold start and throughout driving, but the voltage drops once I start it up again after not running for several minutes. I have ruled battery and the alternator out and I am now at a loss. Is it possible that my battery cables are to thin to the starter? I just can not seem to make any other connection here to the correlation with warm temperature and a voltage drop.