when accelerating from a dead stop (pre boost) the car seems overly sluggish. Most auto cars speed up a lot quicker in first gear from a dead stop. BUT when the turbo spools up, the car takes off very good, and once im above 2500 rpm i havent a problem at all
could this be an airflow sensor problem? engine compression? im fairly new to the RB series. Have a good handle on the FSDE, but these are a little more complicated.
it so far has a very strong idle at approx 800rpm. it just doesnt have any acceleration in low gears before turbo of course.
It is a little heavy on fuel, not sure if its just my heavy foot or the engine, i’m measuring my mileage right now, see how long this tank will last. Also, i am running 91 octane. Im thinking the intake manifold may need to be cleaned out, and the turbo piping as well, my air filter was completely black when i got it, and there was some slime in the rubber tubes
im thinking most autos are just like that. They also have less timing so that could be part of it. Maby the ECU’s are a tad different too but id say thats normal. I know what your sayin and every auto RB20 Ive had did that. Thats why I just throw RB30’s under them. You will get full boost just reving the engine in nutural Solves the problem!
i think you need to get used to the design of a turbo engine… because of the turbo you have a lower compression… that = very low power before the turbo kicks in… i think your just not used to that style of motor
yeah your probably right, i’ve gotten everything checked out, coilpacks tested good, I’ll just wait until the spring, do the injectors, valves, plugs, hardpipes, fmic. Maybe those few things will help out the pre-turbo side of it.
I always thought turbo engines were high compression ? is that only when their under boost? if not under boost they are low compression?
static compression on a turbo engine is usually 9.0:1
anyways compression check and if you are near or lower then 117psi/300rpm then there is your problem for feeling slugish.
of course if you were below the service level you would be having more then just slugishness for problems.
depends on how hard i press the pedal, i havent actually looked but it doesnt feel like a quick shift, almost feels as if im starting off in second gear at all times
Also, how do i pressure test an engine? or should i allow a professional to do that?
What do you mean by “limp” mode, you mean “hold” and no its not in hold.
Im pretty used to it by now, but if there is something wrong id rather fix it now before the winter rolls around
Limp Mode is automatic trans ECU condition that occurs when the transmission sense something isnt right, to protect itself it locks itself into 3rd gear and wont allow it drop. It often doesnt throw a code (Engine check light wont come on) and it will generally only allow 3rd gear and 4th/Overdrive (if equippped).
But i havent driven a turbo auto yet so it might be just how it handles. Thought I’d mention it just because I have thrown mine into limp mode by 2 foot driving before, the car wouldnt accelerate, didnt notice it until I couldn’t catch up to a smart car… Generally it reset if you reset your system (Disconnect Battery, Hold brake for 30 Seconds and then reconnect).
If it doesnt clear then something is either wrong or thats how she handles…
Solves the problem!