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View Full Version : Huge bouncing Idle

KwikR6
02-23-2005, 12:20 AM
Ok so my buddy has a del sol. b16A3 engine. bought the car from the States and shipped it up here. It was fine...drove the car for about 3 weeks and the idle started bouncing like crazy. I figured it was his TPS sensor. So he ordered a new TB we put on the TPS sensor..and bam...the idle was worse. So we put the stock TPS sensor on and yeah..back to 1250-2000 RPM range. No CEL light. I can't figure it out..anyhelp.??
AzCivic
02-23-2005, 12:40 AM
could there be a vacuum leak of somekind? spray some throttle body cleaner around the intake manifold and see if the idle changes.
GT40FIED
02-23-2005, 02:57 AM
Maybe the IAC valve (if Hondas have those)? TPS would've been my first guess, too...but it sounds like that's a bit cracked out. Have you tried disconnecting the mass air meter (again, if the car has one)? Sometimes if the MAF goes bad it can fuck with your idle.
pdiggitydogg
02-23-2005, 07:23 AM
Yeah, try cleaning the iac valve w/ some carb cleaner.
My car was doing that last winter and once I cleaned it out, problem solved.
ebpda9
02-23-2005, 08:07 AM
if the idle is set too high the car will do that too. also check for vacum leaks too.
ChrisCantSkate
02-23-2005, 08:56 AM
when i had that problem it was a vaccum leak. i'd get the vaccum diagram and make sure to check everything and not just look by eye, i didnt see my problem that way.
KwikR6
02-23-2005, 10:06 AM
Ok so i looked and looked for pics...were is the IAC....
and Chris do you know where I can get a vaccume diagram
and where is the idle screw..is there one

I haven't worked on a honda for a little over a year..since I did my swap...so I'm a little rusty....
ChrisCantSkate
02-23-2005, 10:41 AM
http://www.hondahookup.com/manuals/

check there... its in those manuals somewhere
pdiggitydogg
02-23-2005, 11:02 AM
iacv on my d16 is on the back of the intake manifold...its got 1 wire connector and 2 coolant lines running to it
ChrisCantSkate
02-23-2005, 02:10 PM
also check out this page, its got a decent troubleshooter

http://www.ef-honda.com/ben/Badidle.php
AzCivic
02-23-2005, 07:27 PM
nice link!
KwikR6
02-23-2005, 08:58 PM
Originally posted by AzCivic
nice link!
+1
thermal
02-25-2005, 07:20 PM
Originally posted by KwikR6
+1
+2

Also check your spark plugs and wires. make sure all cylinders are firing.
AzCivic
02-25-2005, 10:43 PM
so did you ever figure out the problem?
KwikR6
02-27-2005, 11:00 AM
Originally posted by AzCivic
so did you ever figure out the problem?
In all honesty. Not yet. I talked to the guy and sent him this link and some others. However I haven't had a chance to get my hands on his car yet. I don't think he has worked on it either. This week for sure I'll be working on it.
C's 94 InTeGrA
02-27-2005, 06:14 PM
Its either the IACV or the FIT (fast idle thermostat) I had this problem when i installed my blower and a guy over on a another site showed me a way to fix it and tell if it was either one of those. If u want to know what to check hit me with a pm and ill send you the summery. ITs really easy as just as looking in your throttle bodie.