ShooterSS

iTrader: (3)

Car only has 2600 miles on it. Autotapped it and there is a miss on #2 and #8. Twice in the last 600 miles I've thrown a P0300 code, misfire detected, only when car has sat for about 5-10 minutes idleing. Now, I noticed this after the converter (Vig3200) install but I'm not sure that it was exactley after the install. Car pulls strong through the RPMS, no miss, no stutter.

My thoughts :
Idle needs to be raised because of the converter.
Change plugs and wires : Have some MSD and NGK to go in.
Reset the PCM for Idle relearn.
Something 'seriously' wrong.

Any thoughts or info would be greatly appreciated. <img src="gr_stretch.gif" border="0">

AFTICA

iTrader: (8)

Your plug change will probably cure it.I had a very slight miss occasionally at idle.It wouldn't miss at WOT or throw any codes but it was being detected on Atap.When I had the plugs out for the header install I found that one of the platinum disks come off the plug making that gap significantly wider.Once that plug was replaced the miss completely went away.

Pro Stock John

iTrader: (34)

Low idle, is it at 500?

RPM WS6

iTrader: (3)

Shooter, it’s funny you should mention this. A friend of mine has a ’02 WS6 that started doing the same thing as yours (slight miss at idle, PO300 code) right after a vig3200 install. We never did figure out what was causing it. He changed the spark plugs and it didn’t help. The car was also at real low mileage like yours (under 3000). The PCM is in the process of being tuned though and the PO300 is being removed so looks like we’ll never know in his case...

ShooterSS

iTrader: (3)

PSJ - Idle is at like 550rpm. Don't know if the 50rpm would make a difference. I'm gonna open the TB a little when me and BigD do the plugs and wires and see what happens. <img src="gr_stretch.gif" border="0">

RPM - That's the FIRST time I've heard of anyone else having the EXACT same problem. VERY interesting to say the least. It does make me feel a little better and make me think there is a 'glitch' that I'm missing and not something wrong with the car. Any info you can give me to what happened after the re-program would be great. Thanx!! <img src="gr_stretch.gif" border="0"> <img src="gr_stretch.gif" border="0">

Pro Stock John

iTrader: (34)

Idle is too low, causes that.

RPM WS6

iTrader: (3)

Shooter, I would be happy to give you a report as soon as I know, but there is only one problem. The car now has an ATI blower and a whole new fuel system is being installed as well. Not to mention a new tranny. And the tuning is going to encompass all of these things, so I don’t know if the info will be useful to you or not. Not sure when he’s getting the PCM back either as he keeps making changes!! But if we find anything useful in regards to this issue I will let you know ASAP. <img src="gr_stretch.gif" border="0">

Colonel

Yep, do the idle relearn. Some TR-55 might also help. Other than that you might have a faulty IAC.

Colonel

BTW, the idle relearn procedure is in this thread...

https://ls1tech.com/ubb/cgi-bin/ulti...c&f=1&t=002266

ShooterSS

iTrader: (3)

Awesome Colonel! Thanx! <img src="graemlins/gr_hail.gif" border="0" alt="[hail]" />

I was hoping you would post that. Wonder why you have to omit some steps for the '01 cars. <img src="images/icons/confused.gif" border="0">

Hopefully that'll fix the issue. Sure would like to be able to let it idle without an issue. <img src="gr_stretch.gif" border="0">

Pro Stock John

iTrader: (34)

You can play with things and increase idle up to 200 rpms above 'desired idle speed.'

My guess is that 700 would be a lot better, when it's that low sometimes the car will stall out when you have the a/c on.

Paulie

What PSJ said, he should know, he heard my story about trying to figure out the miss ever since I put the converter in. It never went away, car was perfect with stock plugs and stock converter. Went so far as to do a CKP relearn.

Once you do a cam, you never worry about again... <img src="gr_grin.gif" border="0"> <img src="gr_grin.gif" border="0"> <img src="gr_grin.gif" border="0">

Superman

What the hell you doin idling for 10 minutes pecker??

If you don`t let it idle that long you won`t have that problem right? Sounds like an easy fix to me <img src="gr_grin.gif" border="0"> <img src="gr_stretch.gif" border="0">

ShooterSS

iTrader: (3)

Well, did the idle relearn and *BLAH*, same f-ing thing. <img src="gr_images/icons/mad.gif" border="0">

Thanks to Paulie I know where the screw is to adjust the idle, so we'll see if that helps.

We also checked the TPS voltage and it was dead on right.

SO, we'll see what happens. <img src="graemlins/gr_judge.gif" border="0" alt="[judgement]" />

ShooterSS

iTrader: (3)

OK Bringing this one back to the top.

Did new plugs, TR55s and wires, MSD and same damn thing.

Now, I see the small screw that sets the idle on the TB. It's 'under' the part that holds up the 'half-moon' of the TB right? Should I just bump this up a bit.

Another note, the car has died when put into reverse, idle seems very low. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

Also, would it be worthwhile to drill open the hole in the TB at all?

P0300 = HELL! <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" />

Tom99SS

iTrader: (2)

Shooter,

I had to do this when I got my TC and cam installed. With a volt meter on the TPS and Autotap to read rpm, I was able to get close to 750 rpm at idle and not throw the p0507 code (high desired idle speed). This also eliminated the P0300 codes from popping up. If you want we can hookup since I live in Round Lake Beach and try this on your car.

Let me know,

- Tom

<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

<small>[ April 08, 2002, 07:53 AM: Message edited by: Tom99SS ]</small>

Bad30th

iTrader: (13)

Do you still have cats ? I am having similar problems and I think it's because my cats are clogged... Dealer is supposed to be replacing one this week and I am gonna have to **** and moan for the other one...

No SES codes that the cats are bad, mild gas smell and white smoke at idle. smoke increases a little when RPMs raise. Has thrown P0300 code. Runs like ****, no power, bad gas mileage, A4 shifting all out of whack.

Good luck,
BadAss30th

ShooterSS

iTrader: (3)

Tom99SS - That would be AWESOME! I just sent you some e-mail. Thanks so much for the offer! I'll bring the beer, what do you drink? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

BadAss30th - How many miles on your car? Mine doesn't have 3000 yet. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> Boy, would that be a kick in the groin if the cats went bad that quick! <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

Tom99SS

iTrader: (2)

Shooter,

Don't worry about the beer, call my cell @ 630.669.1517

I am not at home thus I don't have access to email currently. We can setup a time to meet and I can give you directions.

- Tom

ShooterSS

iTrader: (3)

Thanks Tom! I'll probably give you a call later tonight, around 6. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />