My 88TII idles at 2000 almost 2500RPM and i was wondering if that is normal because my car does have high milage and I dont know if thats normal for rx7s and i notices most cars idle at 1500 or less, thx alot

There's a thermal wax pellet in the throttle body that causes the high idle. If it's malfunctioning or if there's a vacuum leak, you may get a high idle. If you want, you can do the TB mod and get rid of it.

so is it normal to idle at 2000............. or is that a malfunction?

Normal idle is around 750.

lmao... ok cool and thanks. https://www.nopistons.com/forums/pub...IR#>/bigok.gif

Is it a ported motor?Adjust the idel sensor.



Check for vaccum leaks like UniqueTII said though first.



Welcome to Nopistons

Idle sensor? WTF are you talking about..

Is this a stock TB or a modded one?

If it's modded, did you pull the fast idle cam?

If it's stock, it's most likely the cold start system. The thermo pellet is not functioning, and it's either dead or the coolant passages are plugged (more likely).







-Ted

I think by idle sensor he meant throttle position sensor (TPS), just for the drunken_idiot's clarification.

sorry my bad https://www.nopistons.com/forums/pub..._DIR#>/sad.png

ill quote my old post:



THIS IS ASSUMING YOU HAVE A TURBO, THE INFO IS THE SAME FOR N/A BUT THINGS MAY BE IN DIFFERENT LOCATIONS



Check and set your TPS, and check your idle stop/set screw.



The idle set screw is on the firewall side of the TB. It is a small threaded shaft with a slit for a straight blade screwdriver to fit, it should have a locknut on it as well. It is located close to the body of the TB and serves to stop the throttle plates via stopping the throttle linkage.



To properly set the screw you should turn it out all the way until it isnt touching the stop plate (follow the end of the screw it hits a plate on the throttle linkage effectively stopping it from moving) When you can see air between the screw and plate it is ready to be set. Move the screw until it is just touching the plate. Now turn it 1-2 full revolutions that should set it to idle around 550-1000rpm. If this screw is screwed far in that is your idle problem. If not leave it set liek I said and move onto the TPS.



Checking and setting the TPS can be done using the topic in the "2nd Gen FAQ" forum which you can get to by clicking on its name in the main "2nd Gen Specific" forum. You may also want to check ivf your TPS even works correctly, that info can be found in the FAQ as well.



For an S5 you may want to read what i wrote in that FAQ topic as the green plug is in a different location (you'll need to build an LED check light and plug it into this location) and you dont need to ground the other green plug.



If you'd like me to go into more detail on setting the TPS post asking and I will take pictures and write down everything you need to know.



If after doing these two things your idle is still bad I'll need more info:



A) Is your AWS connected properly or have you removed/bypassed it. (accelerated warmup system, it is a solenoid to the left of the TMIC with a line from the TMIC running to it, and then a line running from it to the UIM, i believe and it has an electrical connector as well)



B) Is your BACV still connected and plugged in, or have you bypassed/removed this? (Bypass Air Control Valve, has an electrical connection on it, is a mounting spot for the coolant lines running to the TB and should have a connection coming from just above the turbo, assuming you have a turbo, and the BACV itself mounts onto the UIM)



if all those things check out there are a few other possibilities, such as stuck throttle cables etc.



kevin.

ill quote my old post:



THIS IS ASSUMING YOU HAVE A TURBO, THE INFO IS THE SAME FOR N/A BUT THINGS MAY BE IN DIFFERENT LOCATIONS



Check and set your TPS, and check your idle stop/set screw.



The idle set screw is on the firewall side of the TB. It is a small threaded shaft with a slit for a straight blade screwdriver to fit, it should have a locknut on it as well. It is located close to the body of the TB and serves to stop the throttle plates via stopping the throttle linkage.



To properly set the screw you should turn it out all the way until it isnt touching the stop plate (follow the end of the screw it hits a plate on the throttle linkage effectively stopping it from moving) When you can see air between the screw and plate it is ready to be set. Move the screw until it is just touching the plate. Now turn it 1-2 full revolutions that should set it to idle around 550-1000rpm. If this screw is screwed far in that is your idle problem. If not leave it set liek I said and move onto the TPS.



Checking and setting the TPS can be done using the topic in the "2nd Gen FAQ" forum which you can get to by clicking on its name in the main "2nd Gen Specific" forum. You may also want to check ivf your TPS even works correctly, that info can be found in the FAQ as well.



For an S5 you may want to read what i wrote in that FAQ topic as the green plug is in a different location (you'll need to build an LED check light and plug it into this location) and you dont need to ground the other green plug.



If you'd like me to go into more detail on setting the TPS post asking and I will take pictures and write down everything you need to know.



If after doing these two things your idle is still bad I'll need more info:



A) Is your AWS connected properly or have you removed/bypassed it. (accelerated warmup system, it is a solenoid to the left of the TMIC with a line from the TMIC running to it, and then a line running from it to the UIM, i believe and it has an electrical connector as well)



B) Is your BACV still connected and plugged in, or have you bypassed/removed this? (Bypass Air Control Valve, has an electrical connection on it, is a mounting spot for the coolant lines running to the TB and should have a connection coming from just above the turbo, assuming you have a turbo, and the BACV itself mounts onto the UIM)



if all those things check out there are a few other possibilities, such as stuck throttle cables etc.



kevin.

i see your double post and raise you three

my bad.



kevin.