Lately I've been having issues with my car everyone :/
around 3-3.5k rpms i have this hesitation problem. it happens in every gear and i'm unable to cruise on the freeway whatsoever. the car starts shaking and im not able to accelerate. im not in boost, it's just when i'm casually accelerating. i have to let off the gas and punch it in order for the hesitation to go away. for a while i thought it was a boost leak, so i got rid of the boost controller and that didnt help.
i took it to a shop here in vegas and they thought a reflash and tune would get rid of the problem. think that would fix my problems?

 

what have you checked? check your plugs and wires. try a boost leak test. also. check your intake, maybe a leak or unmettered air going into engine.

is it a certain spot on the throttle position? any logs?

the more information the better we can help.

 

check your fuel pump also

 

you're right i was told to check my plugs. im changing those out this week along with my timing and balance belt. also just got a new intake pipe and filter, but the problems were happening before then and still happening now.
as for a certain spot on the throttle position, that could be possible. i'll need to check the tps

 

yah, i was just hoping that it would be something a little cheaper to fix first than to put $200 into a walbro, you know? haha

 

i got the same problem, cruising around 2000rpms on highway but my does it sometimes. New plugs, new walbro pump no boost leaks. Anybody?

 

^did you swap out wires too? I had that problem on my gst, its a certain spot on tps that does it. never lets me cruise it around 3000 in 3rd gear. I can find it at idle just by reving up slowly.

 

so you changed all that right? and now you have no problems??

wires to what? the tps?? i think that would definately help. also going in for a tune and reflash, hopefully that'll help out my situation

 

plug wires. when did problem start?

 

sounds like P0300

 

I had a bucking problem at part throttle that turned out to be the stock plastic BOV leaking (2003 Evo8). I replaced the BOV with the metal MR part and no more bucking.

Hope this helps!

-Franc

 

Mine does this too but only when engine is not warmed up. once up to temp everything is fine.

 

^^avatar. thats just mean...haha.

tamimichix. plz perform a boost lleak test. only way we can figure this out is to narrow it down. removing the boost controller will verify there is no boost leak. I would not reccomend a tune and flash until this is fixed. unless it started after you made some ecu tweaking.

 

i'd like to perform a boost leak test, but is there anyway do to that on my own? i took it to a shop here in town and he wants to chanrge $60 an hour for labor for a few hours :/

it does it regardless if i've just turned it on or if it's been running for an hour

really? the bov? that's so weird because that was the problem with my sr'd 240 too. i didnt figure it out though til i sold it. i'll be sure to look into that and hopefully that's my only problem

and i find out by an obd2 right? i did that when i got the car smogged and it said that. that's the engine misfire code right? i looked it up and found out that it's really common in the 03 models, especially when you change out the stock clutch. first mod i did to the far was swap out the clutch and flywheel for an ACT clutch and flywheel. so it might just need to be reflashed.

problem started about a month or so ago. i drive the car less and less now because if it is the wires then a misfire with the wires or plugs could blow my motor. im looking into replacing the oem wires.

 

can anyone tell me if i'm right???
im going to replace my plugs and wires.. so i have to get plugs, wires, and 2 ignition coil boots?