Can anyone help or point me in the right direction

[almeida1234]

Hi guys

I have bit of a dialemma with the 7, basically when you start the car for 1st time it should run high rpm for first 15-20 seconds and then back normal but for the last few days this was not the case I am under the impression maybe one of the vacuum hose come loose or a air lock, It is not a really problem as I let the car warm up either way. but I just wondered if anyone point me in the right direction as what and where to check?
and it is 2000 rs
thanks

[Ricco_04]

That sounds like the Accelerated Warmup System (AWS).  Unfortunatly i dont know what controls it other than you can bypas it by starting with 1st enguaged and clutch pressed.  Assume a solonoid controls it (or a pipe which connects to it) so maybe thats duff.

I did think it was only europe & us caus which had that but yours is 2000?

[tyson23]

your fast  idle cam will prob be seized slightly its got no control over first gear etc also check your water level..

[steve garbutt]

Are you running stock or aftermarket ecu.
If its aftermarket it may be your cold start correction map as ambient temps are changing this time of year.

[almeida1234]

Still stock ecu my water level is ok, strange must be a airblock or loose vaccum pipe perhaps, yeah mine is a 200 rs, not a problem but I am bit anal I suppose

[almeida1234]

That sounds like the Accelerated Warmup System (AWS).  Unfortunatly i dont know what controls it other than you can bypas it by starting with 1st enguaged and clutch pressed.  Assume a solonoid controls it (or a pipe which connects to it) so maybe thats duff.

I did think it was only europe & us caus which had that but yours is 2000?

I think I should look up for AWS and this could be coulprit

[almeida1234]

Just found this article on google sound like it is beeter if it does not work
instead of 7 running 3000 rpm on a start up

DISABLE ACCELERATED WARMUP SYSTEM (AWS)  
The Accelerated Warmup System (AWS) slams a stone-cold 3rd Gen  engine to 3,000 rpm immediately after startup to promote faster  warmups for reduced air pollution emissions.  This cannot be good  for the engine.  It is also very painful to those who care about  their engines.  Several approaches can be taken to disable the AWS.  
1ST GEAR STARTUP  
Putting the car in 1st gear during startup will cause the ECU  to disable the AWS.  This is the easiest approach.  The clutch  must, of course, be engaged while cranking the engine.  Don\'t  accidentally disengage the clutch.  The ASW will function when  others start your car "normally".  
PLUG THE ASW TUBING  
Plugging the ASW tubing works well and is reasonably simple and  costs very little.  There are several approaches which people have  taken, all of which are designed to cut off the flow of air.    
The AWS is shown on page F-83 of the Shop Manual but unfortunately,  it does not provide a clear picture of its location.  It consists of  3/4-inch OD black rubber tubing which runs from a nipple on the curved  crescent shaped aluminum intake pipe immediately upstream of the  throttle body to a metal tube which connects to a solenoid valve  under the extension manifold.  This nipple faces the driver.  After  several inches, the AWS tubing connects to a metal tube which  disappears down and under the throttle body.  The connection to  the solenoid valve which cannot be seen.  
To stop the flow of air from moving through the AWS system, I  made a metal plug by cutting a 1.25-inch long piece of 5/8-inch  metal rod from Home Depot (and had 34.75 inches of rod left over).   Make certain to file and scrupulously clean off any burrs so the  engine will never suck in metal shavings.  With a razor blade,  cut the ASW tubing completely through about 2 or 3 inches from  the nipple and insert the metal plug halfway into the cut tubing.   Reconnect the other end of the cut tubing to the plug and wrap  it with electrical tape.  That\'s it.  The AWS is then disabled.  
Another way to prevent air from flowing through the AWS is to  completely remove the rubber AWS tubing and insert a plug into the  nipple and another plug into the metal tube.  This may be more  difficult because of access limitations.  Again, the concept is  to prevent air from flowing through the AWS.  
Several people who have plugged the AWS tubing have subsequently  experienced engine stalling on startup.  Others have not.  One fix  is to drill a small hole through the metal plug to allow a small  amount of air through the AWS.  Again, be extremely careful to  remove all metal shavings from any drilled openings since they are  not good for the engine.  
UNPLUGGING THE ASW SOLENOID ELECTRICAL CONNECTOR  
Yes, unplugging the ASW solenoid valve\'s electrical connector will  disable the ASW system but will also cause the "Check Engine" light  to come on.  That\'s the reason no one does it this way.

[philiwily]

Your car won\'t have AWS.

[almeida1234]

Your car won\'t have AWS.

I beleive all the rx-7 have aws though, otherwise it would not make sense:wiggle

[Jit]

Yes, quite

[TRIND-FD]

Interesting, thinks

[philiwily]

I beleive all the rx-7 have aws though, otherwise it would not make sense:wiggle

They don\'t, as it was only fitted to cars with cats in the downpipe, ie Europe and US, I would imagine it was to heat up the front cat quicker.

With, but with the valve removed.


Without