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ENGINE LIGHT GOES OFF AND ON INTERMITTENTLY

Discussion in '1994-2004 V6 Mustang Tech' started by Ponygrl1972, Aug 5, 2017.

  1. Ponygrl1972

    Ponygrl1972 Member

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    OK heres the issue..Engine light went on..the code said Cylinder 2 issue...so i started simple..Seafoam run through gas..had the exhaust straight piped..LOVE IT!! Well her gas milage was PHENOMINAL!! Got 19.3 on that tank..had code erased no seafoam premium ALWAYS..gas milage went down afew to the gallon...ran another can of seafoam got 22 to the gallon...light was off and on....when i turned OD off for more power it would come on blink and stay on...this last tank..no seafoam...milage at 20 per gallon and light went off...so do i just let be? I thought about adding the SF to oil and try spraying the injectors...any suggestions b4 things get ugly and we have to dig deeper?
     
  2. douglass

    douglass Active Member

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    usually when you have a flashing check engine light, its due to a missfire. You could hook a scan tool to see if the fault codes stored. If the light has turned off by itself, then its possible the computer has determined that the problem is gone.