|
Hesitation and lethargic below 3k
as per the title really. My 06 Hawk WRX 2.5 had an intermittent issue where it would feel very lethargic and hesitant below 3k revs - mainly off boost driving round town on partial throttle. It seems to be a more regular issue now. Once you plant it, it boosts fine, and drives well with no misfires etc but at lower revs it feels awful and on a couple of occasions the revs have dipped quite low. its a completely standard car, not even a PPP map. Only mod is a cosworth panel filter and this was happening before that went in. I’m not quite sure where to start with it. It has no warning lights, no smoke, no odd smells, no noises, oil and coolant seem okay. Was thinking maybe a snall boost leak leak or a vac leak? Alternatively a maf maybe... thoughts? |
Check plugs,probably oiled up due to ringlands failing on the poo.5.
|
C
Originally Posted by wrx2005
(Post 12044951)
Check plugs,probably oiled up due to ringlands failing on the poo.5.
|
Originally Posted by Ste333
(Post 12044970)
C was doing it before and after recent plug change. The plugs that came out looked good. No sign of oil or any issue with spark. Also no misfires present. given the issues with the 2.5 and you have already changed plugs I'd start here. that's assuming you have had the fault codes read on the car and there aren't any |
I'd also have it checked for boost leaks and have the lambda sensor checked since it seems to be misbehaving when in closed loop.
|
Originally Posted by wrx2005
(Post 12044975)
have you had a compression test done??
given the issues with the 2.5 and you have already changed plugs I'd start here. that's assuming you have had the fault codes read on the car and there aren't any
Originally Posted by LiamB
(Post 12045026)
I'd also have it checked for boost leaks and have the lambda sensor checked since it seems to be misbehaving when in closed loop.
|
to update. read the codes today - nothing stored, or currently present....
The car is booked in at TDR in a couple of weeks anyway for a few parts to be fitted, so at the same time the lads are going to give it a once over to check for vac/boost leaks. They're also going to do a leakdown test and compression test it for peace of mind. So we shall see.... |
To update this further.... for anyone interested who may have similar symptoms.
No codes found in the car. Compression test and leak down test carried out at TDR - all is good and healthy thank god.... :) No obvious vac / boost leaks. Plugs all good - as they're new. No misfires either. Suggestion now is definitely MAF, so looking to either replace with one of these pups https://www.importcarparts.co.uk/par...y=&searchPart= or perhaps clean this one first and see how it goes..... |
MAF now cleaned at work today... a good liberal spray with electrical contact solvent cleaner. And reinstalled..... I'll feedback if a clean seems to have done it.... Wasn't immediately obvious if the wires were dirty or not...but I don't think you'd be able to tell anyway unless they were coated in oil.
It I still have problems, new MAF from ICP it is. |
Hi mate,
Did you ever find the solution ? as I have the same issues on my 07 Impreza GB270 |
Clean the maf & boost solinoid.
|
Originally Posted by RobsyUK
(Post 12080661)
Clean the maf & boost solinoid.
|
I used halfords own brake cleaner.
|
There is a special MAF cleaner from liqui moly
|
| All times are GMT +1. The time now is 12:35 AM. |
© 2024 MH Sub I, LLC dba Internet Brands