Hey all, I have a obd1 b18b1 with a b16 tranny in my eg civic. Ever since i put the motor in I have had idle problems. At start up the motor will rev to 2k and drop to 1500 then back to 2k and after like 30 seconds it will mellow out and sit at 800 RPM's. After I drive my car and come to a stop ( shifting into nuetral) the car will stay right at 2200 RPMs and I have to tap the gas in order for it to drop to 800 again. I have cleaned my FITV, IACV, bled the coolant, looked hard for a vacuum leak and even tried tightening my IM and TB. Could this be a valve lash problem, because that is the only thing that I have not done to this motor since i dropped it in. Thank you all for any suggestions and help. Joe. motor has 90k

 

So nobody has an idea of what the problem might be....?

 

idle problems usually can be fixed by recalerbrating the tps and adjusting the flat head screw on the tb couter or clockwise untill your idle drops to 900 rpms, try that and reset the ecu and see what happens good luck.

 

Ok I did a Valve Lash adjustment this morning and it actually smoothed out the idle but it is still idleing high when i shift into nuetral from a roll. Also when i start my car now it idles from 1500 to 2000 then back and forth for a couple minutes. Any ides???

 

http://www.team-integra.net/se...=1167 that should help

 

How come you didn't read the WHOLE first paragraph? ..

 

still having this problem...bump.

 

What throttle body do you have??? I have a obd-2 tb without the FITV and have the same problem... Im running obd-1 with USDM P30-A00 ecu... I hate my bouncing idle...

 

im having the same damn problem! we adjusted the tps. so now the rpm stops jumping up and down also messed with my throttle cable. but now it just idles at 2500sh. someone help mee too!! but everybody saying its my iacv so im gonna clean it tommorw and check to see if i have any leaks or bad gaskets!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dc4iNtEgRa &raquo;</TD></TR><TR><TD CLASS="quote">What throttle body do you have??? I have a obd-2 tb without the FITV and have the same problem... Im running obd-1 with USDM P30-A00 ecu... I hate my bouncing idle...</TD></TR></TABLE>

I have the stock TB, OBD-1 motor with a p75 ECU..

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sick_dc2 &raquo;</TD></TR><TR><TD CLASS="quote">im having the same damn problem! we adjusted the tps. so now the rpm stops jumping up and down also messed with my throttle cable. but now it just idles at 2500sh. someone help mee too!! but everybody saying its my iacv so im gonna clean it tommorw and check to see if i have any leaks or bad gaskets!</TD></TR></TABLE>

If adjusting the TPS stoped your jumping idle then I guess I should try that next, Is it hard to adjust the TPS? You can clean the IACV, thats a good idea if you have an idle problem.. I cleaned mine but nothing changed..I guess im not the only one with this problem. Somebody will chime in with the answer to our problems we will just have to be patient and keep cleaning valves. lol Thanks guys.

 

i had my buddy help me adjust it but you need a voltmeter to check it. and another person to help. when he did it he checked the volts from the ecu. while i turn the tps. but make sure its in the slot because i didnt the first time and wondered why it didnt work because the ******* who took it off didnt put it back correctly. so if you hear a click! check it again! there should be a manual on team-integra.net or ht. try pulling your wire out of the iacv see if the idle drops at all. if not then yeah you have a bad iacv. its suppose to drop to 100rpm if its still good from what i heard.

 

IACV is bad, replace it. Sometimes cleaning just won't do it. A surging idle is almost always the IACV fluctuating. I'd also still check the TPS voltage as well.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sick_dc2 &raquo;</TD></TR><TR><TD CLASS="quote">i had my buddy help me adjust it but you need a voltmeter to check it. and another person to help. when he did it he checked the volts from the ecu. while i turn the tps. but make sure its in the slot because i didnt the first time and wondered why it didnt work because the ******* who took it off didnt put it back correctly. so if you hear a click! check it again! there should be a manual on team-integra.net or ht. try pulling your wire out of the iacv see if the idle drops at all. if not then yeah you have a bad iacv. its suppose to drop to 100rpm if its still good from what i heard. </TD></TR></TABLE>
Ok I think I will try the TPS next.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbodcxbro &raquo;</TD></TR><TR><TD CLASS="quote">IACV is bad, replace it. Sometimes cleaning just won't do it. A surging idle is almost always the IACV fluctuating. I'd also still check the TPS voltage as well.</TD></TR></TABLE>
Awesome thanks for the Info I will deffinitly put a new IACV on it. Thanks everyone!!!

 

hey man i having the same problem too, ummm i messed with my idel adjustment screw it didnt help, one guy said that my map sensor and tps cables might be crossed but i dont know,but a lot of people are saying its the tps so im gona test the volts as soon as i get a volt meter but let me know how you make out cause these jumping idles are making me crazy