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EA82 turbo hesitation
Posted: Fri Mar 28, 2008 9:28 am
by boyce
Ok here it is the problem:
Under full throttle or partial throttle, engine feels like it is hesitating or misfiring at 2800-3200 rpm, below or higher than this range it runs perfect.
What I have done:
Checked operation/cleaned connections for:
Thermosensor (coolant temp sensor)
Oxygen sensor
EGR solenoid/Egr valve
AFM
Ignition timing
Turbo plumbing
Vacuum hoses (all)
Replaced:
Plugs
Wires
Cap
rotor
Fuel filter
Things I havent tried/changed:
Coil
What else?????
This problem is driving me nuts, somebody give me a helping hand!
Posted: Fri Mar 28, 2008 7:19 pm
by marshy
Is this the same car you have a "starting problem with but runs fine".
Or has this happened after you code problem?
Posted: Fri Mar 28, 2008 11:24 pm
by steptoe
fuel pressure during a road test not just free revving on the spot
Posted: Sat Mar 29, 2008 3:31 am
by boyce
marshy wrote:Is this the same car you have a "starting problem with but runs fine".
Or has this happened after you code problem?
Fixed starting problem, it always had this issue since I bought it a few weeks ago, I thought it was bad fuel... but no......
Posted: Sat Mar 29, 2008 5:54 am
by SubaRute
get the injectors cleaned?
Posted: Sat Mar 29, 2008 6:17 am
by boyce
SubaRute wrote:get the injectors cleaned?
nope.. woudl dirty injectors only cause a misfire at 2800-3500 rpm?
Posted: Sat Mar 29, 2008 6:49 am
by Gannon
I second fuel pressure, i had a very similar problem where it would stumble at 3100 rpm
Posted: Sat Mar 29, 2008 9:43 am
by schultzie
what size spark gap are you running?
if you are running 1.1 like the FSM states then close them to 1.0, i run mine at .9
i was getting detonation at high loads at a similar range rpm and this fixed it...
Posted: Sat Mar 29, 2008 9:53 am
by boyce
schultzie wrote:what size spark gap are you running?
if you are running 1.1 like the FSM states then close them to 1.0, i run mine at .9
i was getting detonation at high loads at a similar range rpm and this fixed it...
Standard fsm 1.1
Could I upgrade my coil instead of re-gapping?
Posted: Sat Mar 29, 2008 10:07 am
by schultzie
i guess so, honestly just givve it a whirl, ive had mine gapped at .9 for almost 2 years now and havent had a problem yet. if it isnt the problem then look at fuel again.
my senario might be wrong because i am running more boost and no factory wiring, all after market.