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R&r Problem Without Solution

almzro3e

By almzro3e,
in Engines & Forced Induction

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almzro3e Contributor

almzro3e

Posted
Posted

Hi all

friends i have bad problem naw my rb25det build boost in nutral gear with stoped car

i heard that RICH & RETARD so i changed AIRflow METER 4 times and the mechanic changed the cas

3 times but still same thing can you help me pleas my car stoped i can`t drive it :)

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almzro3e Contributor

almzro3e

Posted
  • Author
Posted
Hi all

friends i have bad problem naw my rb25det build boost in nutral gear with stoped car

i heard that RICH & RETARD so i changed AIRflow METER 4 times and the mechanic changed the cas

3 times but still same thing can you help me pleas my car stoped i can`t drive it :)

its also hisitating when driving

almzro3e Contributor

almzro3e

Posted
  • Author
Posted

Hi dears

i did all this staff till now and about diagnostics i dont have tool

i changed maf 4 times all same result

i changed cas 3 times all same result

i tryed it without intercooler like direct its littel bit ok but small stuk from 5.5k to 6.5k rpm

and today we will try another turbocharger because some garage said if its littil crap will do same problem

so guys if some one have same this damin problem give us some help :thumbsup:

finally i am thinking that could be ignetion coils !!!!! :(

almzro3e Contributor

almzro3e

Posted
  • Author
Posted
what mods are u running?

crook w/g actuator?

have u done a diagnostic? try resetting the ecu properly(shorting the 2 pins in the plug method)

dear am using stock turbo with stock wastegate but before i changed it i hade rb20det w/g

to gaine 10 psi

this thing start when i put new greedy front intercooler

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

I think your timing is off, is it being correctly adjusted AFTER you've been changing over the CAS sensors?

There isnt many things that will cause boost buildup in neutral and timing is the big one

Or the gauge could be faulty, put a decent one on there or are you using the stocker? (dont trust the stock one)

UltimateGTR - nothing to do with actutors etc... its not under load in idle plus the gate is closed on idle normally anyhow, so its gotta be fuel related, ie before turbo

almzro3e Contributor

almzro3e

Posted
  • Author
Posted
I think your timing is off, is it being correctly adjusted AFTER you've been changing over the CAS sensors?

There isnt many things that will cause boost buildup in neutral and timing is the big one

Or the gauge could be faulty, put a decent one on there or are you using the stocker? (dont trust the stock one)

UltimateGTR - nothing to do with actutors etc... its not under load in idle plus the gate is closed on idle normally anyhow, so its gotta be fuel related, ie before turbo

no man when we changed the cas we adjust the timing by timing light

even i changed ecu with good one also i changed the coils all do same problem

but when we retaind factory intake manifold problem hapen in 5.5 to 6k

but really how could boost come up like antilage in nutral :banana:

i belive its ignition but where i don`t know

  • 2 weeks later...
almzro3e Contributor

almzro3e

Posted
  • Author
Posted
When the timing is set, is the cas near the centre? Your harmonic balancer may have slipped, and your setting the timing very retarded.

yes brother its in center and with timing gun i got like 12 - 13 degres

all my mods now 3 inch exhust and pod filter with greddy intercooler front mont

and gtr fuel pump also i changed the plugs

yestarday we changed the three wires all long from MAF to ecu and the car runs good

but still i have loosing power in 3rd 4rth gear :P

by the way i am going to buy power fc ecu do you agrre with me ? that it will help me too much

and thanks all for help

almzro3e Contributor

almzro3e

Posted
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Posted
What you mean the problem happened @ 5500rpm/6000rpm with the factory plenum?

What other parts are changed?

Full listing please

its noticable loss of power that somthing hold your car moments

and my mods are 3 exhust pod filter intercooler gtr fuel pump thats all now

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