rbsurfer

I was having a problem with my car surging and bucking under full throttle only in first. I replaced the ckp sensor and it is still doing it but only in first when full throttle. I've searched everywhere with no answer my car starts and runs perfect but will not let me mash it in first any other gear is fine.. does anyone have an idea replaced all plugs and wires also

Naf

iTrader: (1)

Silly question, but when was the last time you tuned your car?

There might be torque protection chiming in or your rev limiter isnt set properly...

rbsurfer

There is no torque management on mine now and its like it goes the comes in and out of power like if my crank sensor still is not working I've done at least 30 case learns. And the tach jumps when it happens. Its like a really hard miss then it goes away for 200 rpm then comes back

rbsurfer

It did this literly out of no where like I kind of like to smack it. Then one day pop and sputter

Naf

iTrader: (1)

Sounds like a rev limiter to me...Are you able to post your tune?

rbsurfer

Its not the rev limiter cause it just hesatates and the keeps going

rbsurfer

Still doing it I know someone here has an idea just changed the fuel filter and its still doing it

Naf

iTrader: (1)

What does ur logs say? Look at the tb, ignition And fuel trim.

You might just be too lean in first

rbsurfer

ckp issues 2 did not die.hpl
ckp issues.hpl
here are 2 logs its like everything just freaks the hell out all at once just changed the fuel filter today also. and before this started acting up i was perfect afr (12.3-12.6) in first sorry it took a while to get the logs up my wideband decided not to log in hptuners but its fixed

Naf

iTrader: (1)

ok, from what i can tell from your log your inj duty is dropping the same time your rpm is. also your tb is fluctuating..

You have a something tellin the engine to slow down

rbsurfer

yea but on the one where every thing just goes limp it kiled the car and threw p0335 ckp code. im at a loos here and have no idea where to go

Naf

iTrader: (1)

Ur tune plz

Naf

iTrader: (1)

Ur issues might be

A P0335 "check engine light" code could be caused by:

Damaged CKP sensor connector
Damaged reluctor ring (missing teeth or not turning due to sheared-off keyway)
Sensor output open
Sensor output shorted to ground
Sensor output shorted to voltage
Failed crank sensor
Broken timing belt
Failed PCM

Also check the cam sensor

But it only happens in first. And the fuel drops.

rbsurfer

I checked all wiring for ckp come ecu to plug and everything there is good. As for the cam sensor I just did a can swap about 2-2.5 weeks prior to the mess up you think it could be causing some issues. I pray its not the reluctor wheel I looked in the hole and didn't see anything crazy.

rbsurfer

Also replaced the crank sensor again tonight made some pulls and it was great no problems then after like 10 pulls (I was excited it was working) it started doing it but only in second now!?!? I'm confused

Naf

iTrader: (1)

Have the dealer take a look at it, you may have another issue

rbsurfer

I was thinking the same so I'll try to talk to a master tech today got some friends at the dealership. What other issues could it be?

Naf

iTrader: (1)

I took another look at your tune and i noticed your AFR is very LEAN. At 3,800+ you should be below 13.0 not hooverin around 14.5-16.0 You also have negative trim which doesnt make sense to me...

Check your fuel pump...

InfrareV

Have you done a case relearn? To me the logs make your issue pretty clear and aren't very interesting. I don't think anything is wrong except for the reported engine RPM. Clearly the engine isn't seeing 5150rpm-3850rpm-5175rpm in an 1/8 of a second. The other noise(INJ Duty, Advance, TPS) you see is the PCM accounting for a sudden drop in RPM.

rbsurfer

OK so after working with a master tech 25+ yrs exp he said the plug or the wires are stretched so tomorrow after he gets off were gonna run all me wires and plug. And we logged fuel pressure and its 58-59 psi all the way through and the wideband jumps lean cause it is loosing crank signal and therefore no injector pulse or coil fire. I'll keep the thread updated