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bad tank neck seal on 98

  • Thread starter Thread starter brandylee11
  • Start date Start date Sep 21, 2011
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brandylee11

New Member
Sep 21, 2011
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Sep 21, 2011
#1
  • Sep 21, 2011
  • #1
hey i have a question.i have a 98 v6 3.8 convertable mustang. Will a filler neck seal make the purge valve and/or ftp sensor read bad? whats goin on is mainly when its really hot outside or if my car gets really warmed up it gets to spitting and sputtering and stalling. i have repalced plugsn wires, fuel filter, o2 sensors, and we even put a cold air intake on it for the MAF sensor but none of that fixed it. i know i have a bad filler neck seal. i can only fill my car up 3/4 full b4 it leaks out. but can a bad seal make the purge valve n ftp sensor throw codes?
thanks so much
 

wmburns

SN Certified Technician
Aug 14, 2009
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514
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Houston Texas
Sep 23, 2011
#2
  • Sep 23, 2011
  • #2
brandylee11 said:
can a bad seal make the purge valve n ftp sensor throw codes?
Click to expand...
Short answer is YES! Any leak in the EVAP system can cause EVAP related DTC codes.

The bad filler neck grommet is a very common problem. Also, check the filler neck for rust through especially if there is a plastic rock guard on the filler neck.
 
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