help

[Prof]

It\'s worth pulling the error codes off.
 
This could be one of the \'limp\' modes - due to a failure of OMP or similar.
 
See here - similar issue to yours:
 
http://www.mazdarotaryclub.com/forums/showthread.php?t=49131&highlight=ecu+codes

[tazzjazz]

can this just be plugged into a diagnostic lap top,checked air intake pipes,look to be relatavely new,no leeks as i can see,their also is no o2 sensor on down pipe,which their has never been one since i owned car

[Prof]

Not sure if the non turbo had a narrowband, but if it did and you\'ve not got one, it will just run fixed maps and throw 2 error codes.
 
It can still go into limp mode because the OMP is bad - but only if you have the electronically driven one - some earlier EGI (non turbo) models had the mechanical linkage off the throttle body.
 
Unfortunately the car doesn\'t do OBD - so laptop won\'t help you none.  You just need a small bulb or 12V LED and a wire to get the codes off - there is a bit in that other thread about how to get the codes off.
 
but also check this link:
 
http://www.fc3spro.com/TECH/HOWTO/ERRORCODES/ZENKI/zerror.html
 
to get the codes off the earlier models

[L18M]

look to be relatavely new,no leeks as i can see,

simple trick, which im sure everyone knows.
turn engine on then spray some wd40  or similar flamable fluid around the intake area then if there is a leak the revs will rise.

[tazzjazz]

ok thanks guys,i,ll have another play 2moz

[tazzjazz]

also noticed 2day when sitting in the drive and revving upto 4k revs clean over 4k and it sounds like its missing and when it drops down to 4k it pops and back fires

[m1tch]

also noticed 2day when sitting in the drive and revving upto 4k revs clean over 4k and it sounds like its missing and when it drops down to 4k it pops and back fires

That could be the engine cutting ignition to protect the engine, best to check the intake and the error codes

[bumpstart]

likely EOMP fail and limp , codes will tell
but i also suspect MAP sensor , try swap and see

[L18M]

likely EOMP fail and limp , codes will tell
but i also suspect MAP sensor , try swap and see

do egi\'s have MAP sensors? or u mean MAF?
(just learning more on fc\'s

[Prof]

do egi\'s have MAP sensors? or u mean MAF?
(just learning more on fc\'s

They do (have both) - well one version of the EGI does - it has all the control signals of the Turbo car - except no Knock sensor, and no Duty solenoid for boost.  It has VDI and 6 port solenoids instead.
 
There is also an older version of the engine control that has the distributor rather than the CAS sensor - I don\'t know if that one has all the same sensors.
 
If you\'re not sure what version you have - post pics up of the engine bay - notably near the drivers shock tower, near the front passenger side of the engine, side of the engine as seen from the drivers side, and finally of the coils - should help identify what you have.

[tazzjazz]

hi guys,ive still got the same problem car won,t rev past 4000revs under load.
ive done a flash test,its coming up with no faults
checked 4 air leaks with the old easy start but no joy

[grinder]

check you leads are on the right way

take the plugs out - what do they look like

check the resistance from the battery to the chassis ( high number is bad )

if its an EGI - what the dizzy and rotor arm like

thats all i can think of off the top of my head

[tazzjazz]

thanks 4 that,new plugs and leads and all connected the right way,
not checked resistance though,rotar arm and dizzy cap look ok