Trans Am

From what I know, flashing SES lights means something really bad is happening. The only time it happend to me, i crushed a piston and a rod...

Team ZR-1

They might turned off P0300 from tripping the DTC error but did not turn off misfire tripping the MIL light on.

cablebandit

iTrader: (37)

exactly.....MY STOCK CAMMED CAR GETS MISFIRES AT IDLE

Reboot

iTrader: (5)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Team ZR-1:
<strong>They might turned off P0300 from tripping the DTC error but did not turn off misfire tripping the MIL light on.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'll check that out with the guy that did my programming, although I'm not exactly sure what a MIL light is. <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" />

Do youe think I should just have him turn off misfire detection all together? The car runs and idles awesome, I think these 01 pcm's are a little too sensitive to changes.

SSBOY, I'm using 918's

2K1_4mula

MIL = Malfunction Indicator Lamp

aka the "Check Engine" light

Team ZR-1

Due to my stoker and cam setup I had misfire and multi misfire esp at cold engine idle.

I let the misfire test happen to keep I/M 240 tests happy but turned off MIL light and Class type error reporting thus that helps assure I/M tests for misfire get to a valid complete state.
If you turn it totally off and are in a state that will be doing I/M 240 smogs tests you would fail but you could always have to flashes, one to pass smog and another for race trim and just upload them with the LS1-edit when need be.

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Reboot:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Team ZR-1:
<strong>They might turned off P0300 from tripping the DTC error but did not turn off misfire tripping the MIL light on.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'll check that out with the guy that did my programming, although I'm not exactly sure what a MIL light is. <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" />

Do youe think I should just have him turn off misfire detection all together? The car runs and idles awesome, I think these 01 pcm's are a little too sensitive to changes.

SSBOY, I'm using 918's</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">

Reboot

iTrader: (5)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SSBoy:
<strong>You say that your getting around 25 Misfires on a few of the cylinders? That sounds like a lot to me for that size cam. My TR-224 Cam gets at the MOST 2-3 on each cylinder (via autotap). I have a feeling that that Flashing light might have something to do with your heavy misfires, but then again you say that the misfire code is shut off? weird.

What kind of Valvesprings are u using?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">With a TR 224 you should be getting way more than 2-3 misfires per cylinder unless Ed Wright changed the parameters of misfires logging to accommodate the TR 224 cam.

Toxic Texan

Isn't a blinking SES light Misfires and Emissions related? So if the misfires is turned off could it be emissions related?

Reboot

iTrader: (5)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Toxic Texan:
<strong>Isn't a blinking SES light Misfires and Emissions related? So if the misfires is turned off could it be emissions related?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The P0300 misfire code has been deleted but misfire detection hasn't. Apparently my little 218 cam is exceeding the threshold allowed in the misfire detection temps. I would prefer not disable misfire detection incase I break a spring or bend a push rod but it looks like that's what I'll have to get done, unless someone has a better idea.

Reboot

iTrader: (5)

I have a 2001 A4 that we just put a MMS 218 cam in. I had a tuner delete the P0300 code and raise my idle to 750 in gear 850 neutral. I have also drilled the TB to 3/16th and have a IAC count of around 50 when warmed up.

Here's the problem, if I let the car idle at a long light my SES will start to flash. This doesn't happen while driving and is alway cleared if I restart the car. We checked the car with ATAP and a Tech II and there are no codes. We did monitor the misfires and they are random and on all cylinders, they seem to get up to around 25 on a few of the cylinders before it starts over.

Any idea's on what is causing the flashing SES?

SSBoy

You say that your getting around 25 Misfires on a few of the cylinders? That sounds like a lot to me for that size cam. My TR-224 Cam gets at the MOST 2-3 on each cylinder (via autotap). I have a feeling that that Flashing light might have something to do with your heavy misfires, but then again you say that the misfire code is shut off? weird.

What kind of Valvesprings are u using?

<small>[ March 23, 2002, 12:56 PM: Message edited by: SSBoy ]</small>

Cool28

iTrader: (2)

I got that with my car when I first install the cam. I would say the idle is still to low. Up it to 850 in gear. That and you might have fouled some plugs. had that happen without it idling right. My b1 cam I have idleing at 850 in gear. Hope this helps

Reboot

iTrader: (5)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Cool28:
<strong>I got that with my car when I first install the cam. I would say the idle is still to low. Up it to 850 in gear. That and you might have fouled some plugs. had that happen without it idling right. My b1 cam I have idleing at 850 in gear. Hope this helps</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I thought of that but it also throws the flashing ses while idling in park at 850.

I just ran into another major issue. It's been raining here the last couple of days and just cleared this morning. I decided to try a few WOT blasts from 70-100 on the freeway. When I hammer the car it sets me back in my seat until just after the 2-3 shift. Then it bogs and won't rev any higher than 4000 rpm's in 3rd, but this only happens at WOT and only after shifting from 2-3. It's like I was holding the brake to keep the car from going any faster. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> This happened on 4 out of 5 trys, on one pass it just hauled *** the 1-2 doesn't do this.

I have had TM deleted and the 2-3 is hard and crisp. I just don't know what the hell is going on with this thing.

Cool28

iTrader: (2)

hmm maybe ya have a bad valvespring?

Mike Morgan

You shouldn't have any misfire issues with the 218 cam. If you have a flashing SES light then there is another problem elsewhere.
I've left misfire codes operational on many cars with the 218 cam without issue. And for sure never get a flashing problem. A flashing SES indicates an immediate problem that could result in catalytic converter damage. This may be an issue with a stock A4 idle speed, put 750 RPM is more than enough for this cam.

<small>[ March 24, 2002, 02:58 PM: Message edited by: Mike Morgan ]</small>

Reboot

iTrader: (5)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Mike Morgan:
<strong>You shouldn't have any misfire issues with the 218 cam. If you have a flashing SES light then there is another problem elsewhere.
I've left misfire codes operational on many cars with the 218 cam without issue. And for sure never get a flashing problem. A flashing SES indicates an immediate problem that could result in catalytic converter damage. This may be an issue with a stock A4 idle speed, put 750 RPM is more than enough for this cam.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I agree Mike the MMS 218 isn't a real big cam for the amount of misfires I'm getting. I thought that maybe it was a spring or push rod but the misfires are random and on all cylinders. The car is putting out great power and idles excellent. I know it's the pcm misfire problem because there's no code thrown. As for CATS, I have none. I had the rears o2's deleted and the o2 simm are still in place.

BTW- I'm not bashing this cam, I love it. I gained 51 RWHP and 26 RWTQ with it using stock heads.

Team ZR-1

If you have a Ease scanner just click on I/M
and see if everything is in a complete state.
If not which are in a non complete state ?

Got access to a Tech-II and have it send a crank position sensor relearn command.
It might be out of sync with cam position sensor.

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Reboot:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Mike Morgan:
<strong>You shouldn't have any misfire issues with the 218 cam. If you have a flashing SES light then there is another problem elsewhere.
I've left misfire codes operational on many cars with the 218 cam without issue. And for sure never get a flashing problem. A flashing SES indicates an immediate problem that could result in catalytic converter damage. This may be an issue with a stock A4 idle speed, put 750 RPM is more than enough for this cam.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I agree Mike the MMS 218 isn't a real big cam for the amount of misfires I'm getting. I thought that maybe it was a spring or push rod but the misfires are random and on all cylinders. The car is putting out great power and idles excellent. I know it's the pcm misfire problem because there's no code thrown. As for CATS, I have none. I had the rears o2's deleted and the o2 simm are still in place.

BTW- I'm not bashing this cam, I love it. I gained 51 RWHP and 26 RWTQ with it using stock heads.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">

Mike Morgan

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Reboot:
BTW- I'm not bashing this cam, I love it. I gained 51 RWHP and 26 RWTQ with it using stock heads.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually, I didn't take it that way. Good gain BTW <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> But by turning off the diagnostics is just hiding a problem. What's your IAC counts? Can you test the car with a stock PCM? I'd like to see if it's still happenning.
IF the car runs and drives fine then maybe turning it all off is OK, but I'm always interested in the how's and why's.

Tom99SS

iTrader: (2)

Reboot,

I have a Comp 218 .562 cam w/ 114 LSA (don't know if it is similar to MMS cam or not) and the 918 springs. Even before having the idle raised via MTI to 850 in drive I would only get the P0300 when idling for a long period of time and this was with a 750 idle. This only happened a couple of times. I also A-Tap'd "current misfires" for each cyl and the most I would get was 8. They usually read 0 and sometimes I get a 2 or 4 but never higher than 8.

Since getting the idle raised by MTI the above values have not changed much but I did have them also delete the P0300 code.

Check your plugs and wires. Possibly a wire maybe loose thus causing the mis-fires. Just a thought.

Good luck and let us know how it turns out.

- Tom

P.S. just noticed you have a GMAF, I took mine off and but the stocker (de-screened) back on and noticed a better idle, might want to give it a try.

<small>[ March 24, 2002, 07:47 PM: Message edited by: Tom99SS ]</small>

FormulaWS6

Don, if you want your stock MAF back, i can bring it by tomorrow. LMK, JP