PTU? posted by dubya86 on April 13, 2010 at 06:34 PM
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If the PTU is the old style (gray box with a metal heatsink), replace it. If you have the new style (small and black), it's more likely you have some bad connection somewhere. Check and clean all the pins on the connectors at the CAS and PTU. I know you said you "checked" your injectors; did you ohm them out?