Annoying misfire!
#1
Annoying misfire!
I am trying to find this "misfire" issue I am having. I have looked over and over again all wiring, coils,wires,new spark plugs ect.
35r single turbo
Stock trailing coils
Msd digital 6 + msd dual blaster coil for leading
New plugs and all 9s
Ect..
I know it maybe difficult to trouble shoot by Just listening but I'll give it a shot any way..
http://i705.photobucket.com/albums/w...r/bfa117ce.mp4
35r single turbo
Stock trailing coils
Msd digital 6 + msd dual blaster coil for leading
New plugs and all 9s
Ect..
I know it maybe difficult to trouble shoot by Just listening but I'll give it a shot any way..
http://i705.photobucket.com/albums/w...r/bfa117ce.mp4
#4
rotorhead
iTrader: (3)
Did I see 207F on your external water temp gauge and 33C on your OEM sensor (Power FC)? If so one of them is wrong, and it is most likely the stock sensor. You need to get a new one. It's the one on the water pump housing. Also, if I'm right you are running an FC thermoswitch which is turning on your #1 fan relay at 97C/207F. Your ECU is not engaging the #2 and #4 fan relays because the water temps are reading too low.
Also, with a bad water temp reading you will be stuck in warm up enrichment and depending on your setup it will affect your ignition timing as well. Both can contribute to misfire at idle.
Also, with a bad water temp reading you will be stuck in warm up enrichment and depending on your setup it will affect your ignition timing as well. Both can contribute to misfire at idle.
#5
Yeah I have the FC thermo switch and the water temp sensor was installed new by me like two years ago... I have the digital temp gauge hooked up from the rear housing coolant nipple to the top coolant nipple on top of the water pump housing. Is it possible I have the water temp green connector the the fuel rail temp connector swaped?
#6
(Arghx) good eye. Yeah I had the fuel rail sensor and the temp sensor swaped... I swaped them to their right location and right away the a/fr came up in the mid 12s at idle... I am going to take it for a spin today and report back, thanks guys...
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#14
So i took her for a ride and shes running much better now but shes leaning out on me. At idle shes about 12.3 12.5 when i start driving and accelerate lightly she goes from 12 A/Frs to 15 and 16 and she bucks..... I checked fuel gauge 38 psi at vaccum, replaced fuel filter, pump is working ...
#18
I am just begining to understand The PFC and how it works and tuning but i have not tried to mess around with anything in the PFC.
This is under throttle tip-in or during steady throttle position?
I would have to say both... even when parked, i rev the car and keep (lets say) a stedy 4,000RPM rev it leans out in and out...I will take video of what it does and post it...
#19
rotorhead
iTrader: (3)
Datalogs would help, preferably ones where you have a wideband input. You loaded a map that hasn't been specifically optimized for your car so there is no guarantee that it isn't still a tuning issue. A single turbo conversion is a big enough change that it can throw off the tune even though you didn't change injectors.
#20
Datalogs would help, preferably ones where you have a wideband input. You loaded a map that hasn't been specifically optimized for your car so there is no guarantee that it isn't still a tuning issue. A single turbo conversion is a big enough change that it can throw off the tune even though you didn't change injectors.
#23
Boosted. I got BLOWN!!!
iTrader: (29)
I'm no expert, but I'm thinking the split should be more consistent under vacuum. It starts at 12, but when you touch the throttle, it drops to 3
Tighter split = leaner right?
Also the secondary injectors shouldn't be coming on under vacuum, unless the computer is supposed to fire all 4 for tip in?
I do not know the PFC like my old haltech though
Any experts feel free to chime in!
Tighter split = leaner right?
Also the secondary injectors shouldn't be coming on under vacuum, unless the computer is supposed to fire all 4 for tip in?
I do not know the PFC like my old haltech though
Any experts feel free to chime in!
#25
I have not touched a thing. All I did was install a diffrent map to see what would happened and still the wideband goes lean and bucks. I will post a video of what it does..
Here is video.
http://i705.photobucket.com/albums/w...r/48e269f2.mp4
Here is video.
http://i705.photobucket.com/albums/w...r/48e269f2.mp4