Slow take off * solved (water in cap)

groceryman · Post by **groceryman** » Fri Jan 09, 2009 6:25 am

Hey guys last two or three days when i take off its like the truck is holding back on power or almost skipping .until it changes into second gear almost like the exhaust is gruggling after you get up to speed its fine any ideas. Just had a tune up 3months ago.Its a 2002 with aflowmaster muffler. Thanks

gocntry · Post by **gocntry** » Fri Jan 09, 2009 11:30 am

Clogged Pre-Cat

Post by **HenryJ** » Fri Jan 09, 2009 11:43 am

Might be worth a read. ^ Similar symptoms?

roadrunner · Post by **roadrunner** » Fri Jan 09, 2009 3:23 pm

Before jumping to conclusions here. Are you sure you are indeed in low gear on each start-out? I had a similar problem with my 01. Turned out to be a cpu failure. Was NOT going into low gear each time I stopped. Got progressively worse until I had to manually shift each gear. I had my wait4me computer on hand so installed it and did the crank position relearn and no more problem. Just my .02 worth.

PGH04ZR5 · Post by **PGH04ZR5** » Sun Jan 11, 2009 11:16 pm

my CC is acting the same way. At takeoff it bogs down until the shift. I haven't checked the pre cat, would like to, but am new to the CC and am still reading up on it.

RoadRunner: what all did the crank relearn and such that fixed your problem intale? As always, have more reading to do...

Post by **HenryJ** » Mon Jan 12, 2009 7:43 am

You're sure it is not just the torque reduction you are feeling? That can sometimes be more noticeable when cold.
Worsening symptoms when it is warm would be something related to a plugging cat.

PGH04ZR5 · Post by **PGH04ZR5** » Mon Jan 12, 2009 12:28 pm

I had an extra moment today so I decided to look everything over and retighten the KN. Found a spark plug wire popped off on the passenager side middle. It did run alittle better hitt'n on all 6 but it was a short hop to the gym. I dont remember the last time I looked around under the hood since i haven't been putting a lot of miles on, could have been that way for alittle while.

I should see an increase in mileage now i would hope, I cant take much more of this 15 MPG highway...

raven2510 · Post by **raven2510** » Mon Jan 12, 2009 1:05 pm

could also be caused by water in the cap/rotor. since he had it changed not to long ago its a possibility

roadrunner · Post by **roadrunner** » Mon Jan 12, 2009 2:43 pm

RoadRunner: what all did the crank relearn and such that fixed your problem intale? As always, have more reading to do...

Read carefully above. I was not implying the crank-position-relearn fixed my problem. It is simply necessary when installing a new pcm such as the wait4meperformance I installed. Without this procedure being done after pcm replacement as I did the SES light will come on repeatedly and show multiple misfire codes.

I replaced my pcm for performance reasons too but mainly to correct pcm-caused transmission shift problems I was experiencing at the time.

groceryman · Post by **groceryman** » Sat Jan 17, 2009 7:47 am

Yep it was water in rotor cap all is fine now thanks everyone.