 Need a bit o' help |
 Feb 23 2004, 01:03 PM
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Person of Wisdom  Group: Members Posts: 227 Joined: 4-February 03 From: IA Member No.: 78  |
Ok, my friends mother's car is throwing a Code 42 (fuel pump). How can I check the fuel pump...what does the code mean? Is the voltage getting to the FP not enough, or how does the ECU check the FP? Can I check the voltage or current in the wires or something, or does the FP have to come out to be checked?
-------------------- '90 Talon TSi AWD
300 awhp _________________ ...here's your sign... |
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Feb 23 2004, 01:13 PM
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 Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
I'm not sure what kind of car your mom drives, but I'd guess its the fuel pump relay that isn't working if its throwing a code. The ECU controls the relay rather than the pump itself in DSM's. Diagnostics can't be thrown by the fuel pump since its only power in and ground out, but a relay can throw short to ground, open-circuit, or short to battery diagnostics.
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