well when i start the car it idles a 25 for a while...then it wears off. and it used to stay steady a 2k RPMs and when i would hit the brakes it would surge from 1 to 2.5 k like 3 times then stay steady at 2k rpms.
now it surges all the time, i dont know what to do but it's a b20 with p75 IM
no carb can and the niple on back of mani is plugged. before it ran to the carb can on my EG but no anymore with my EK.

please give me your ideas this wasn't happening when i had it my EG
thanks

 

Mine surges but its throwing the IAT Valve Code and the IAT Sensor Code, they both need to be replaced, they go bad after time sometimes.

 

Well, for one, your idle sounds to be about 1200 rpm's too high. You need to get your idle speed in spec before you try to troubleshoot the problem...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanA &raquo;</TD></TR><TR><TD CLASS="quote">Well, for one, your idle sounds to be about 1200 rpm's too high. You need to get your idle speed in spec before you try to troubleshoot the problem...</TD></TR></TABLE>
well I need help with that as well. how do i do that?
i have no CEL

 

Here's the process I'd do:

1. Check your throttle cable and make sure it's properly adjusted. There should be a little slack in it; you don't want it somewhat tight.

2. Do the "cover the hole" trick and verify that your car will, in fact, idle down like it should. Inside the throttle body on the firewall side, cover the holes, one by one, with your finger. The bottom one is FITV (if equipped) and the top one feeds the IACV. If your idle is bouncing and you cover the bottom hole, you need to verify your coolant level is right then, if it is, pull the FITV and disassemble and tighten the donut. By covering both holes, the car should either idle VERY low or maybe even die. This is normal. If it does not idle down to around 800 rpms by doing this, you need to find out why. Throttle plate could be too far open or you could have a vacuum leak. If you changed the throttle body or TB gasket recently, you may have the wrong gasket on there.

3. Once you have the vacuum leaks fixed, you can unplug the iacv then start the car. It will throw a light but this will allow you to get your idle about right. Adjust the idle screw a little at a time then restart car to check idle. Once you get the idle within 20-50 rpm's of where the car is supposed to idle, shut off the car and reconnect the IACV. Restart car. Should idle perfect.

Ryan

 

****...thanks ryan I'll try this and come right back

 

wheni cover the bottom hole it idle low...and when idisconnect the iavc it surges low and rapid now what do i do?

 

Pull the thermo valve off of the bottom of the throttle body and take the 2 8 mm/philips bolts out of the cover plate. Pull off the plate and screw the white donut back in using a screwdriver in each slot. Screw it in as far as you can. Put cover back on, put bolts back on, and put back together. Start car. Should be a steady idle now.

 

My single cam does that sometimes :-\

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanA &raquo;</TD></TR><TR><TD CLASS="quote">Pull the thermo valve off of the bottom of the throttle body and take the 2 8 mm/philips bolts out of the cover plate. Pull off the plate and screw the white donut back in using a screwdriver in each slot. Screw it in as far as you can. Put cover back on, put bolts back on, and put back together. Start car. Should be a steady idle now.</TD></TR></TABLE>
i have faith in you.
but if you could get pecs i'd greatly apreciate it. cant picture what plate or donut. thanks allot for all your answer. pleas show me some pics. thanks.

 

wait never mind i think i get it now. i read through it too fast the first time.
I'll do this thanks allot RyanA

 

No problem. Just give us an update once you have done this. Should be smooth sailing from here on out to get this fixed.

Ryan

 

it expletiveen worked...that thing was all the way unscrwewd thanks allot for your attention these threads don't really get much attention, but you helpped me all the way throug if you are local i'll let you have my last ten bucks.

 

also how do i get it to idle lower than 2k.?

 

Now, if you cover the holes does the idle drop? If not, back off the throttle plate screw and check for vacuum leaks.

Ryan

 

sorry ryan but i dont get this part
once again thanks for you patience. and if ou ever need a tech vouch I'll be one.

 

yeah when i cover the top hole it drops and also it stops the light whistles sound ?

 

So it idles down when you cover the top hole? You can try to pull the idle air control valve (it is plugged in, right??) and clean it. If that doesn't work, you may need a new idle air control valve.

 

cool I'll do that adn i'll say this againg thanks.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanA &raquo;</TD></TR><TR><TD CLASS="quote">So it idles down when you cover the top hole? You can try to pull the idle air control valve (it is plugged in, right??) and clean it. If that doesn't work, you may need a new idle air control valve.</TD></TR></TABLE>