hesitation on high rpms ranges
07-25-11, 10:49 AM
#1
Passenger
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hesitation on high rpms ranges
i am noticing a hesitation on high rpms and it is mostly noticeable in 3rd. 4ths does it as well. I was told that it could be the turbo pre-control sensor.
What do you guys think and where can i find some of theses sensor?
What do you guys think and where can i find some of theses sensor?
07-25-11, 06:56 PM
#5
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Now I'm far from a master at diagnostics so take my advice with a grain of salt. I'd say if your boost pattern is where it should be its not to likely that a turbo control mechanism is bad. As the above poster was getting at you should try to check your fuel pressure to see if its dropping off or spiking which could be a bad fuel pump or pressure regulator. Could also be bad plugs,wires, or weak coil causing you to loose spark at higher rpm.
07-25-11, 07:23 PM
#6
Rotary Enthusiast
Im gonna go with bad plugs / wires.
The fact that it happens at high RPM after the transition from primary turbo to both turbos leads me to believe its probably not the turbo control system.
The fact that it happens at high RPM after the transition from primary turbo to both turbos leads me to believe its probably not the turbo control system.
07-25-11, 07:32 PM
#7
Passenger
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I have not changed my plugs and wires. The car runs fine with no other hesitations it only happens at WOT and mostly in 3rd. I was told to check the solenoid because the turbo transition is right around 4500 rpms and the person that told me said that my boost is staying steady because the switch is not clicking over to the second one and the first turbo does not have enough power to keep the car pulling hard.
I dont have anything on the car other than a boost gauge and a wideband. The wideband at WOT in third when the stuttering happens it goes to 12 which is not that high to cause it to be acting up.
Other than that the car runs perfect.
I dont have anything on the car other than a boost gauge and a wideband. The wideband at WOT in third when the stuttering happens it goes to 12 which is not that high to cause it to be acting up.
Other than that the car runs perfect.
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07-25-11, 11:08 PM
#12
Rotary Enthusiast
You should probably run either 2 x BUR7EQP and 2 x BUR9EQP
or you can run 4 x BUR9EQP if you wish.
You can also run regular BUR7EQ and BUR9EQ and save a couple of dollars.(non platinum, the P stands for platinum)
or you can run 4 x BUR9EQP if you wish.
You can also run regular BUR7EQ and BUR9EQ and save a couple of dollars.(non platinum, the P stands for platinum)
Last edited by 96fd3s; 07-25-11 at 11:10 PM. Reason: added more info..
07-25-11, 11:12 PM
#13
Passenger
Posts: n/a
I will buy them tomorrow and keep you guys posted. I am probably going to hook up the datalogit if it still gives me issues and check the map.
Thanks for all of the help.
07-27-11, 10:01 PM
#18
Rotary Enthusiast
That works, I think the first pic suggests your car may be running lean.
ok so, if the hesitation isnt fixed with the new plugs -
Perhaps your car is running lean up top due to dodgy fuel pump / fuel pressure. That could also explain the hesitation.
ok so, if the hesitation isnt fixed with the new plugs -
Perhaps your car is running lean up top due to dodgy fuel pump / fuel pressure. That could also explain the hesitation.
07-27-11, 10:16 PM
#19
Passenger
Posts: n/a
is that normal for that one plug to be melted more than the others? I am going to rewire my fuel pump and also buy some new wires this weekend. I think that it had gotten better but still not fully corrected. Also on my AFR ir doesnt read more than 12.5 at WOT
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