Can someone help this girl please! [sm=helpout.gif] I am having problems with my 2000 Mazda Miata MX5.
Code: PO402 EGR Flow Excessive Detected. The engine light usually stays on for a day or two and then off the next, but never stays on continually.According to all the suggestionsI found within this forum - I checked EGR boost sensorandboost sensor solenoid valve vacuum lines and the vacuum line from the EGR boost sensor to the manifold. All lines proved to have vacuum, EXCEPT the short vacuum line running from the solenoid valve to the EGR boost sensor
. Is there supposed to be vacuum in this line while engine in idle status?
I also pulled the EGR Valve – no carbon deposits at all, but went ahead and replaced gasket.
This TSB regarding the P0402 Code states to "remove EGR valve (for Protege), or Surge tank (for Miata)
(and what)isthe surge tank?
I cannot locate any info of a surge tank fora Miata.
And another issue - when I drive my car over a few miles, once it heats up, and I shut the car off - it will not start. The engine turns over but will not start until completely cooled down - 20-30 minutes later. Car runs great - smooth – no overheating – no indications of leaking oil, nothing – its runs great. Any suggestions of what the cause of this may be?
Thank you for anyassistance anyone can give me on this.