Ford Aerostar Repair Question :: 1990 Ford Aerostar  check engine light won't always start


Author: jeff_d_fox1234
Subject: 1990 Ford Aerostar  check engine light won't always startPosted: Sat Jun 19, 2010 1:12 pm (GMT -5)

Computer problem

1990 Ford Aerostar  6 cyl Two Wheel Drive Automatic 157933 miles



i have 1990 aerostar 3.0 v-6 battery was hooked up backwards replaced starter solenoid and fusible link ran fine for 2 months fuel pump went bad and replaced at same time check engine light came on when i turn key on check engine light doesn't  always come on  then van wont start have to keep turning ignition switch on and off till light comes on then it will start! also replaced fuel pump relay and pcm relay tried reading codes from computer but reader says cannot read codes in either mode tried both! also when its running check engine light flickers fast. can power control module be bad and how can i test to be sure?



http://www.2carpros.com/forum/viewtopic.php?p=920331#920331