Question about 1999 Nissan Altima
I have a 99 altima and it had several codes, after I had 3 different mechanics look at it we decided to replace the intake manifold gasket. That fo=ixed everything except the knock sensor code. I was told by the emissions office it would not fail for just that code, however after 100 miles of driving over 5 days of city and highway the egr monitor has not reset. Until it will pass a monitor ready test I can't get a waiver if there are any more problems. Is there a specific drive sequence needed for this and if so where can I find it?
Hi Sandy, I'm glad to help!
Sandy, If you have an EGR Monitor that will not set then most likely there is something wrong with the EGR System. There are several things that can cause this depending on the vehicle and engine type. (1) Bad EGR Valve. (2) EGR Vacuum Solenoid. (3) EGR Vacuum Solenoid Wiring problem. (4) EGR Flow problem due to restriction from carbon build-up. These things must be addressed one by one and repaired before it will ever run that monitor. To answer your question you can GOOGLE your vehicle year, make and model and engine for monitor drive cycle and it will show you how it must be driven exactly. Hope this helps and have an awesome day Sandy.
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Posted on Jan 02, 2017
SOURCE: My 1996 Nissan Altima has
Putting miles on them wont reset the computer. It is how many times you cycle the key on and off. And they will only reset if the problem was fixed. I don't know how many times yours has to be cycled, but some vehicles are up to 100 times. Hope this helps.
Posted on Jan 22, 2011
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