Username or Email Address
Do you already have an account?
Forgot your password?
  • Log in or Sign up

    VWVortex


    Results 1 to 15 of 15

    Thread: RHybrid Loss of Low RPM power, especially at running temp.....

    1. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-07-2012 08:29 PM #1
      So my alternator went on my 03' 24v, so i thought "hey seems like a good time to put an R32 head on my BDF block...." 3months later.... lol This is my issue........

      Idles great(especially when cold) while driving it has a power loss in low RPMs(alot more loss when it is at running temp) aswell as a ticking noise coming from the passenger/front corner side of the engine(get louder as engine gets hotter) and starts rough when it is hott........FYI no engine light yet

      -Quick MOD List-
      -R32 head on BDF block(head had a full valve job)
      -HPA clone SRI
      -R32 TB
      -R32 Injectors(obviously)
      -034 giant fuel rail/adjustable FPR
      -Coolant bubble delete
      -Power steering reserve move
      -Battery Relocate

      also btw my plugs keep coming out powdered black, and i had to "modify" the coolant temp sensor so it would fit between the TB and T-housing(it still registers coolant temp but could ii still be mafunctioning??)

      ohhhhh and what fuel pressure should i run???? im running about 55psi right now, just below 4bar

      THANKS GUYS!!!
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    2. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-07-2012 08:55 PM #2
      oh and i did a SAI delete
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    3. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-07-2012 09:53 PM #3
      Bump
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    4. Junior Member
      Join Date
      Feb 12th, 2012
      Location
      Where the Navy sends me...
      Posts
      87
      Vehicles
      '03 Jetta GLI, '93 Corrado SLC
      10-07-2012 11:52 PM #4
      It appears that your plugs are being carbon fouled and if it's happening on all of them, you're probably running rich. With all of your mods, this isn't the easiest problem to diagnose.
      -Holmes

      People are always surprised that my car smells of crayons

    5. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-08-2012 12:49 AM #5
      Quote Originally Posted by Holmes741 View Post
      It appears that your plugs are being carbon fouled and if it's happening on all of them, you're probably running rich. With all of your mods, this isn't the easiest problem to diagnose.
      Yess carbon fouled was the term i was looking for thanks

      FYI update: i took all the plugs out and cleaned them, lowered the fuel pressure to 40psi, than ran the car again(just for ****s and giggles). It ran virtually the same(except it had a difficult time starting) but the plugs werent fouled this time. So something along the lines is messing with the AFR. could this be cause by a faulty coolant temp sensor?

      Many thanks!
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    6. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-08-2012 09:58 AM #6
      Morning Bump plus possible ideas......

      -Bad timing
      -Bad Coolant temp sensor producing a bad AFR, especially at temp
      -Couple sticky lifters(causing the ticking)
      -Bad IACV(do you have to replace the whole TB to fix this particular problem?)
      -Dirty or Bad MAF

      All in all i think its for sure narrowed down to a Air/Fuel ratio problem, thoughts....
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    7. Member GRN6IX's Avatar
      Join Date
      Jan 2nd, 2003
      Location
      East Windsor, CT
      Posts
      3,871
      Vehicles
      2003 GTi VR6, 2006 Touareg V8
      10-08-2012 10:13 AM #7
      You didn't mention whether or not you had a tune to support the .:R head on your 2.8 block. Without that, the motor would do all kinds of strange things, to the best of my knowledge.

    8. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-08-2012 10:13 AM #8
      bad fuel filter?? lol im reachin i need HELP
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    9. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-08-2012 10:14 AM #9
      Quote Originally Posted by GRN6IX View Post
      You didn't mention whether or not you had a tune to support the .:R head on your 2.8 block. Without that, the motor would do all kinds of strange things, to the best of my knowledge.
      Sorry i forgot, but yes, it was tuned by C2 Motorsports for the TB and Injectors
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    10. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-08-2012 09:43 PM #10
      Help Bump!!!
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    11. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-09-2012 08:05 AM #11
      bump
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    12. Member Jo|\|'s Avatar
      Join Date
      Jul 2nd, 2011
      Location
      Mill Creek, WA
      Posts
      366
      Vehicles
      04 GTI, BDF, 3.2L on standby
      10-11-2012 11:05 AM #12
      Quote Originally Posted by joeeveryman87 View Post
      Sorry i forgot, but yes, it was tuned by C2 Motorsports for the TB and Injectors
      But is it the correct one for 2.8 displacement?

      I would find someone with vagcom and look at some of the engine values. Like MAF flow, injection timing, fuel trim, and lambda.

      If you can log block 002 you can figure out your A/F ratio. I don't know how accurate it is though. http://www.ross-tech.net/vag-com/exa...el_EXAMPLE.xls

      Regardless a real A/F gauge wouldn't hurt.

      I read something the other day that said when you unplug the coolant temp sensor the system defaults to certain value. So drive the car cold, then at operating temp, then unplug the sensor once at temp and see if it acts like when it's cold.

      Have you made sure there are no vacuum leaks?

      Also are all the plugs the same color or are the front 3 different from the back 3? Spark plug chart
      Last edited by Jo|\|; 10-11-2012 at 11:22 AM.

    13. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-11-2012 11:44 AM #13
      Quote Originally Posted by Jo|\| View Post
      But is it the correct one for 2.8 displacement?

      I would find someone with vagcom and look at some of the engine values. Like MAF flow, injection timing, fuel trim, and lambda.

      If you can log block 002 you can figure out your A/F ratio. I don't know how accurate it is though. http://www.ross-tech.net/vag-com/exa...el_EXAMPLE.xls

      Regardless a real A/F gauge wouldn't hurt.

      I read something the other day that said when you unplug the coolant temp sensor the system defaults to certain value. So drive the car cold, then at operating temp, then unplug the sensor once at temp and see if it acts like when it's cold.

      Have you made sure there are no vacuum leaks?

      Also are all the plugs the same color or are the front 3 different from the back 3? Spark plug chart
      -For the C2 flash i will double check C2 for the compensation for displacment!

      -Any place where you can recommend decent fairly inexpensive A/F meters?

      -I will try and find someone out here with VagCom but SD VDubbers are far and few between.

      -As far as the coolant temp sensor, it is virtually impossible to unplug the damn thing without taking the thermostat housing all the way off(this is because of how tight it fits between the Throttle body and Thermostat housing) so it isnt as easy as it should be.

      -I will spray some carb cleaner around the engine bay, to tripple check for vacuum leaks

      -and yes all the plugs are carbon fouled, unless i turn the fuel pressure down to 40psi, then they seem to run clean but the car has a very difficult time starting

      BTW thanks for the input, as i really do need varied ideas and oppinions on this, i will check for the suggested things this evening!
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    14. Member mk3_vdub's Avatar
      Join Date
      Oct 18th, 2006
      Location
      Columbia, MD & Morgantown, WV
      Posts
      3,243
      Vehicles
      03' 24v GTI VR6, 88 AEB Cabby
      10-24-2012 02:45 PM #14
      24v's have a wide band 02 as their primary sensor for a/f, so the value on vag com should be pretty accurate.

      best way to diagnose, as someone above mentioned, is to hook up the laptop and run some logs while driving around

    15. Member joeeveryman87's Avatar
      Join Date
      Dec 6th, 2010
      Location
      South Dakota
      Posts
      441
      Vehicles
      2003 GTI 24v // 2007 CBR600RR // 97' F150 // 85' Honda ATC 200x
      10-26-2012 12:49 PM #15
      Quote Originally Posted by mk3_vdub View Post
      24v's have a wide band 02 as their primary sensor for a/f, so the value on vag com should be pretty accurate.

      best way to diagnose, as someone above mentioned, is to hook up the laptop and run some logs while driving around
      I am investing into my own VagCom straight from ross tech, hopfully i will have it in by next weekend, and it will give me a reason as to what is happening. If its a bad timing issue will the VagCom be specific to that? or just a general suggestion??
      ..."understeer is when you hit the wall with the front of the car, and oversteer is when you hit the wall with the back of the car"...

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •