hey y'all. im new to the board but i have had a problem with my 90 turbo that bothers me. when im on the gas real hard, th motor will hessitate like im running really lean. feels like the fuel cutoff or something. any help would be appreciated.
boost spike???
- Thread starter b005t3d
- Start date
any other ideas? im still running the ct26 turbo with 550 cfm inj. im using a manual boost controllr and ive only got it set at like 10 psi.
Fuel cut is also a whole lot more than just a hesitation.
Have you checked for codes? What grade fuel are you running? Knock from low octane / high boost will retard your timing and make it hesitate...
Have you checked for codes? What grade fuel are you running? Knock from low octane / high boost will retard your timing and make it hesitate...
its wierd. i dont have a c.e.l and it still does it. i have checked codes and there arent any. does anyone think it might be spark plugs or something simple. oh by the way, i run nothing but 93 octaine. been the same since the engine swap was done.
ok, no kinked feul lines. still doin the same thing. i really dont want to blow the turbo so i really hope it aint that/
my car seems to do a simalr problem, I was guessing spark plugs and wires as well. When I figure out how to fix it I'll tell u what I did.
does it also sound like its rapidly backfireing and you get a massive loss of power? ive been told that could be detonation.
not at all. it only looses power, if you want to call it that, for a slpit second, then its back to full power. not dropping boost, no back firing. its just a momentary hesitation in acceleration.lagged said:
b005t3d said:
eh, do you have a MAF-T or a lexus AFM? if you're still running the stock AFM you're probably flooding the crap out of it. any black smoke? only reason i ask is because you didnt mention that you had any upgrades that would allow more air.
-shaeff
i havent noticed any black smoke although, i am still stock in the intake sensor catagory.shaeff said:
hey my car is doin this also and it is all stock cept for full hks turboback exhaust it will drive fine thin it i feels like it hesitates misses or hits fuelcut just like u were sayin then as soon as it clears away its like boom everything is fine and ur goin again
yeah, it a split second then back to full boost. no problems but i might do it several times per gear.cruzinbill said:
When you say a slight hesitation, what exactly do you mean? If you're at WOT with full boost and take your foot completely off the throttle for a half second, then slam it back to WOT again, *that* is what Fuel cut feels like. It's not just a hesitation, it hits hard and is rather difficult to mistake for anything else.
Does it do this at a specific point in the RPM band, or a certain boost, or is there no pattern to it?
Do you have a real boost gauge, or is your 10psi an estimate?
Does it do this at a specific point in the RPM band, or a certain boost, or is there no pattern to it?
Do you have a real boost gauge, or is your 10psi an estimate?