steady throttle miss

[rude power]

my motor has developed a miss when you are steady with the throttle,doesn't do it when you are pushing down on the pedal or when increasing speed and rpms,only when you are steady or on like cruise control,I had just done a decarb,and changed plugs,brought it home from the lake and seemed to run much better on whole shot, but next time at the lake it started as soon as i pulled out, tried another set of plugs and different gas but that didn't help.anybody got any ideas or what to check or change, thanks for any help on this...again...
oh i cleaned the exhaust pressure sensor too,with sea foam and a dreamel tool brass brush, ?? also filled the fuel filter with sea foam and let it set over nite after a quick start to get it in the system??<br /><br />
Modified by rude power at 9:44 AM 5/1/2010


Modified by rude power at 10:15 AM 5/1/2010

[rude power]

Could this be water in the filter,or maybe the decarb broke something loose and is stuck in the fuel injector?Plug wire ?

[ChampioNman]

You should have got a check engine with water in the filter. Check the TPS volts? Nothing on the laptop?

[rude power]

nope no lites and I tried everything I know to get the software to work, but it says cannot communicate with emm.I'll try and check the tps,..Thanks for the idea ChampioNman, I know you know what it is ,it just hasn't come to ya yet........

[Bassmeister]

When I had the old software and got the non communitive link, sometimes I could unplug the dutesh connector at the ph and plug it back in and get it to work. Plugs been checked lately? Gap tight .028? Makes a world of difference on my 03......

[rude power]

plugs have been swapped to an old set that was good and kept for spares,I"ve tried everything with that dang software ,I just cant get it to work nor can I find anybody around to even to work on the fuel injected models,they all have to be the carbed motors,what marnias,dealerships, is left that is.Its the on the throttle that gets me when it quits missing, the de-carb done wonders for the hole-shot ,should of done that along time ago,that was like adding 25 more hp...

[rude power]

I pulled the codes today by counting the ck engine lites,and got 17,22,26,43,28, if I counted them right which I counted them about 10 times to be sure,but I don't know the ones I set off from the ones that was on it when I bought it last year,I looked 'em up buy dont know if any of 'em would be the one makeing it miss,?? does anybody else know if its one of theses codes???

[rude power]

This must have been something stuck in an injector or possible bad gas in both tanks,cause after running it a couple more times its just about gone away,never found out what all the codes meant, so don't know if that was it or not, but thanks to all BBC MEMBERS FOR YOUR HELP....AGAIN !

[ChampioNman]

17- Alternator voltage below expected range=check engine light
22-Water temp switch activated-initiates SLOW and water temp light
26-Battery voltage below expected range- Check engine light
28-Shift assist circuit malfunction-Check engine light
43-Water temp sensor above expected range-SLOW-Check engine.

Hope this helps.

[rude power]

understand them all but the shift-assist #28, What does this do ?

[overdrivecb]

kills fire to some cyls at just the right time so you can shift it out of gear backto nuetral

[Bassmeister]

+1

[rude power]

why would that set a code ?

[rude power]

well it may not be a miss, but more of a surge at steady throttle, it feels as if it wants to jump forward at an off an type surge at lower rpms 4000 and lower,,but cant feel it past that or when your giving it gas,it runs strong up till about 6100 rpms without a miss,is there two types of fuel pumps or systems on this.