ive been checking my car out and the egr is on until it gets to

 

1688 rpm

15 mph

19 degrees timing

temp 54 degrees

 

its off up the range until it switches back on at

 

3188 rpm

27.5 mph

32 degrees timing

temp 56 degrees

 

it seems to switch ono and off in relation to the timing so at 15degrees its ON when it switched to 19 degrees its OFF up till 32 degrees.

does this sound right if not what would be the symptoms of this switching on and off respectively.

bump does anybody know the answer to this now.

I dont...

I dont...

:headvswal thanks for the reply at least.

Lol, I try to be helpful....but im useless

Lol, I try to be helpful....but im useless

not that useless mate you have just rebuilt your engine by yourself!!!

Lets hope it works, lol!!!

Lets hope it works, lol!!!

:rofl: :rofl: you can do mine next ;) :D

Its very unlikely that the EGR system is working properly now anyway, there are a few current posts about the lines being blocked up, mine has been removed without any noticable difference to the running of the car.

Its very unlikely that the EGR system is working properly now anyway, there are a few current posts about the lines being blocked up, mine has been removed without any noticable difference to the running of the car.

i was thinking of cleaning it somehow! there was a post from a guy a couple of days ago that put some doubt in my mind as to remove it .

 

http://www.300zx.co.uk/forums/showthread.php?t=90433&highlight=egr

I am not knowledgable enough to be able to give a confident reply to that link, my initial thought is that the problems he has are related to the engine detting which may in part is caused by removing the EGT, if removal causes such problems then as lymon says adding fuel in those areas should help. I have not heard any noises yet and would still think that a lot of our NAs have been running without this system working properly for years without problems and trying to clean these lines out is going to be a fairly major job, have you looked to see where these lines are? I would say minimum its a plenum off job.

I am not knowledgable enough to be able to give a confident reply to that link, my initial thought is that the problems he has are related to the engine detting which may in part is caused by removing the EGT, if removal causes such problems then as lymon says adding fuel in those areas should help. I have not heard any noises yet and would still think that a lot of our NAs have been running without this system working properly for years without problems and trying to clean these lines out is going to be a fairly major job, have you looked to see where these lines are? I would say minimum its a plenum off job.

thats what i thought.i still am not sure what det sounds like people say marbles in a jar etc. but i have a rattle on my passenger side intake cam and want to illiminate all possibilities. is there another way to determine det?

If its detting and your det sensor is working properly that should pick it up and put the car in safety mode, also I should think its something that can be checked out on a rolling road, hopefully someone will come in with a more reliable answer, I am really out of my depth on the subject.

If its detting and your det sensor is working properly that should pick it up and put the car in safety mode, also I should think its something that can be checked out on a rolling road, hopefully someone will come in with a more reliable answer, I am really out of my depth on the subject.

you have helped tho mate thank you :hyper:

Egr is turned off under the following conditions:

 

Low engine temp

Engine starting

High speed engine operation

Engine idling

Excessively high engine temp

 

EF&EC 27 in FSM ;)