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What is wrong when you have replaced the egr valve plus cleaned the line check engine

Asked May 18, 2010, 09:45 AM — 3 Answers
I have a 1999 camry. The check engine light keep coming on. I have replaced the EGR valve and cleaned the EGR valve plus the mounting pipe leading to the EGR valve and the throttle body.I used throttle cleaner. I have done this a number of times and the light comes back on. Could it possibly have anything to do with over filling your car with gasoline?

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TxGreaseMonkey's Avatar
TxGreaseMonkey Posts: 15,601, Reputation: 5358
Senior Cars & Trucks Expert
  
#2

May 18, 2010, 10:03 AM


Yes, you can do a lot of damage to the EVAP Control System by overfilling the gas tank. What exact code is being thrown?
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biff26's Avatar
biff26 Posts: 28, Reputation: 16
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#3

May 20, 2010, 11:15 AM
Check the EGR vacuum control solenoid (follow the vacuum line back from the EGR) It is located on the back side of the engine These have A high failure rate Hope this helps.
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kitch428's Avatar
kitch428 Posts: 1,412, Reputation: 746
Ultra Member
  
#4

May 20, 2010, 03:58 PM
Biff26 hit the nail. P0401 EGR insufficient flow detected. Very common on your car. Not easy to get at, but not too pricey either.
Should replace the egr modulator also.
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