88 turboII with 3500 hesitation!
#1
fresh engine shmobbin'
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88 turboII with 3500 hesitation!
I have a 88 10th ae with s5 rotors and fresh rebuild. I am also running 4x720cc injectors, cold air, 3 inch downpipe, and RB catback. oh and a chromoly flywheel with rtek 1.8 ecu chip. In 3rd, 4th, and 5th gear slowly accelerating past 3500 I have a jerky hesitation. Fresh injectors an good grounds. TPS perhaps?? or timing a little retarded?? Please help!! could I be running rich or lean??? aaah!
#2
rotors excite me
iTrader: (16)
Could be TPS. Is it only at a point around 3500RPM or is it constant as you increase engine speed? If constant, I'd still suspect injector grounds. If not, possibly timing, but not because of the ECU. Also, Rtek has had in the past issues with hesitation when switching on the secondary injectors, which is relatively close to 3500RPM, you could shoot them an email and inquire or ask on their forum section here.
#3
fresh engine shmobbin'
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thanks a bunch for the advice and tips on what to check. With my rtek the secondaries kick in at 3300.. also it isn't constant if you slowly accelerate past it then there isn't a hesitation. It's only pronounced when in higher gears when your cruising into that area and not necessarily accelerating hard. My friend said it's TPS because he showed me how to set the timing. I'm going to check my grounds and potentially adjust the tps on monday. thanks again for the feedback
#4
say bruh
im having that same issue with my na s4. Tried the tester light method and was not responding the way the lamps usually do as you turn the tps adjusting screw there is a point where either one light or both lights are on and that point seemed vague on my car. still fun up untill 3.5k
#5
Moderator
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im having that same issue with my na s4. Tried the tester light method and was not responding the way the lamps usually do as you turn the tps adjusting screw there is a point where either one light or both lights are on and that point seemed vague on my car. still fun up untill 3.5k
#6
Top Down, Boost Up
iTrader: (7)
thanks a bunch for the advice and tips on what to check. With my rtek the secondaries kick in at 3300.. also it isn't constant if you slowly accelerate past it then there isn't a hesitation. It's only pronounced when in higher gears when your cruising into that area and not necessarily accelerating hard. My friend said it's TPS because he showed me how to set the timing. I'm going to check my grounds and potentially adjust the tps on monday. thanks again for the feedback
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