ben0878

Ok heres my problem,
I recently did a shot block install on a friends 05 g auto. Idles perfect sounds good @ 650rpms timing is spot on as well. I can increase rpms in N all thru the rpm range but when I add a load "drive" it throws a code ckp p0335.
Now when I first went to start the car org. after install it would'nt start no codes, after pulling my hair out I took a look at all the basics eng comp, fuel, and spark. I found it was not getting spark so I took a guess and swapped out the ckp for a known good one "mines" and it fired right up. Following day picked up a new ckp threw it in and figured all is good, Not...
This is where I'm at now car runs good under no load once your driving car throws a ckp code goes into limp mode, like hitting rev limit @ low rpms on part throttle not so much under light throttle... I went thru the circut per dealer pdf file, getting propper v to sensor and cont to ground. I know it's sending a signal or it would'nt start. Checked body and engine ground no problem found???? Any suggestions???
Ati pro charger belt not hooked up to blower yet
ipp short block 8-8-1
new plugs one step colder
new wal fuel pump fuel psi is good @ 50psi or so @ idle warmed up
stillen headers
hi flow cats don't know the brand??

Brett@AwesomeZ

Well, if you have good voltage and good ground at the sensor, there may be a problem with the signal wire back to the ECU or a problem with the teeth on the flexplate. The toothed wheel is on the flexplate right? It's been a while since I've done an auto. Or perhaps your sensor wasn't as good as you thought, hehe.

ben0878

I'm gona check the signal wire next. Flexplate looks good no chipping of the teeth. The ckp sensor is new staight from Nissan. I was thinking it was something geared more towards the trans. Seeing as to how it will only do it when there's a load on the engine. The owner org. thought it had trans problems and took it to a trans shop, they came back with nothing.... This was before the tear down....

ben0878

Checked signal at ecu idle 1.2V and at 2000 rpms 1.4V pretty much spot on.... Noticed it does it more so when trans is shifting. I had it out for a bit tonight brought the rpms up slowly ran fine once I got the rpms up to about 3000 I gave it more throttle and nothing stutters and rpms flutter... Any thoughts???????

ben0878

Anyone?????

cdoxp800

iTrader: (12)

http://www.nissanhelp.com/diy/obd_codes/P0335.html

ben0878

Mabey possible tuning issue???? All he has is the fuel pump contorl box that comes with the kit nothing to control/ adjust timing. Not a big fan of the ATI kit.. I mean it makes good power but is lacking in the quality deparment...

ben0878

Thanks but I have already gone thru the circut and it checks out fine...
Flexplate is good, wiring, voltage, ground, and singal at ecu. R all in range... At idle it's fine I can rev it all day no codes pending once on the street starts stutering and ckp code pending..............WTF????????

johnwigs

apparently you didnt check the circuit correctly or you wouldnt be writing this post... no where did I see that you posted that on oscilliscope was used to check signal between crank and both cam sensors... that is why the code is set... if it is off then there could be a problem with the "shot block" (cam timing) or the flywheel is installed wrong those are the only 3 problems you can have 1. sensor(s) 2. wiring 3. timing

ben0878

Found the problem apparently there was a trailer hitch on this car orginaly... The wire harness was corroded and shorting out something causing the voltage @ the ecu to drop..... Removed all the trailer harness wiring cleared the code problem has not come back, driven over 50 miles.....