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hesitation and possible reasons, please give me your advice

 
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Old 06-23-2009, 04:41 PM
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hesitation and possible reasons, please give me your advice

hi all
im having hesitation problems with my 5th gen prelude, basically when im cruising in a low gear at low revs then accelerate it seems to hold back then go, i notice it most when the engine is cold. im thinking along the lines of it being-
maf sensor
o2 exhaust sensor
posibly the distributer cap

its got pretty incredible service history and i cant see that ive done a awful lot of miles since ive had it and it was serviced not long before i got it so i tend not to think its spark plugs or leads

i did top up the oil recently, what damage would too much oil cause?
also if i had a problem with my exhaust (eg. split mainfold or blown cat) could this damage the o2 sensor?

any ideas before i spend money on parts i dont need
cheers
Rich
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Old 06-23-2009, 05:00 PM
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Re: hesitation and possible reasons, please give me your advice

Usually to be honest, when your stuttering only in the lower RPMs its usually because you need a tune up or some kind of maintenance done to the charging/starting/spark system. Plugs, Wires, Distributor, (cap, rotor)

Also, another problem may be a vacuum leak. Often cars get a fluctuating or bouncy idle, along with a stuttering or lagging throttle response.

If it really is only when its cold it could possibly be any of the above with air control sensors. Such as 02 and MAF etc etc. See if you can describe it better. Does your car sputter? or does it just lag and delay?
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Old 06-23-2009, 05:09 PM
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Re: hesitation and possible reasons, please give me your advice

thanks for the reply mate
doesnt seem to splutter just lag and delay for a sec then jolts into life, i think it mainly does it when its cold. idle is fine.
i had a crack in my exhaust a while ago just after the manifold, i took it off and had it welded up and all is ok, i cant remember if i had this problem before this happened, so...... could this have damaged my o2 sensor?
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Old 06-23-2009, 09:45 PM
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Re: hesitation and possible reasons, please give me your advice

It may possibly have, but doubtful that its your problem that your car is lagging. Are you getting any check engine light codes?
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No longer own a prelude - but got 3 Hold-me-over's in the mean time
02 Dodge stratus - All stock, my DD
89 EB Edition Bronco - 6" RC Lift, 35" KO's, 302/c6 swap, Ford 9"
79 F250 Ranger Lariat - 9" Lift, 40" Ground Hawgs, 400M/NP435/NP205, D60/D70 Locked
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Old 06-24-2009, 01:43 AM
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Re: hesitation and possible reasons, please give me your advice

Quote:
maf sensor
H22's don't have a MAF sensor. They have a MAP sensor.

Do you have an auto or a manual transmission?
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Old 06-25-2009, 02:15 PM
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Re: hesitation and possible reasons, please give me your advice

theres no check engine light, and its a manual.
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Old 06-25-2009, 02:20 PM
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Re: hesitation and possible reasons, please give me your advice

are you OBD2 or 1? cuz it could be your o2 if you're OBD2. i replaced mine and mine no longer hesitates at say 2-3k?
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Old 06-25-2009, 02:21 PM
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Re: hesitation and possible reasons, please give me your advice

EGR ports/runners in the IM clogged would be my guess. Unplug the vacuum line going to the EGR and see if it still does it.
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Old 06-25-2009, 03:26 PM
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Re: hesitation and possible reasons, please give me your advice

ok now stupid question coming up...... ready...... what is ERG and where is it, got a piture of it?
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Old 06-25-2009, 03:29 PM
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Re: hesitation and possible reasons, please give me your advice

oh and i believe its obd 2.
think o2 is first thing im gonna try. mainly cos i dont know what ERG is
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Old 06-25-2009, 03:31 PM
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Re: hesitation and possible reasons, please give me your advice

Quote:
Originally Posted by rburnham11 View Post
ok now stupid question coming up...... ready...... what is ERG and where is it, got a piture of it?
Under the hose going from the valve cover to the intake.
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Old 09-30-2009, 03:45 AM
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Re: hesitation and possible reasons, please give me your advice

yah im having similar problems today my prelude just started acting like its running out of gas but if i stomp the pedal it kicks back in.it only does it mid throttle and only if the check engine light goes off, if the check engine light is on then it runs fine. anyone have any ideas for me??
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Old 09-30-2009, 09:58 PM
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Re: hesitation and possible reasons, please give me your advice

the guy that owned my prelude before me used regular unleaded quite a few times. now i have noticed every once in a while i get bad hesitation mid throttle could this be because of that? it says "premium unleaded fuel only"
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Old 10-21-2009, 01:37 PM
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Re: hesitation and possible reasons, please give me your advice

BAD O2 SENSOR! run ur codes dude.
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Old 10-21-2009, 04:51 PM
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Re: hesitation and possible reasons, please give me your advice

though it may be a bad o2, it definitely sounds like a miss also. I guess no one has ever driven a car that havent had the plugs changed in >60k miles
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89 EB Edition Bronco - 6" RC Lift, 35" KO's, 302/c6 swap, Ford 9"
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Old 10-21-2009, 04:54 PM
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Re: hesitation and possible reasons, please give me your advice

Quote:
Originally Posted by Kirk View Post
BAD O2 SENSOR! run ur codes dude.
I have a bad hesitation and when I ran the codes the O2 sensor came up. So I bought the sensor and I'm gonna put it in this weekend!!!
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Old 10-21-2009, 08:03 PM
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Re: hesitation and possible reasons, please give me your advice

I was responding to 93ludes post. he says that it seems to be hesitating and like running out of gas. then when he steps on gas it takes off. that sounds like o2 to me.
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Old 10-22-2009, 02:20 AM
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Re: hesitation and possible reasons, please give me your advice

Things to check...
TPS (Throttle Positioning Sensor)
Fuel Filter ( A clogged or old fuel filter can cause all sorts of "hard to diagnose" problems. )
Distributor...If your distributor isn't aligned correctly then your timing may be retarded, thus causing hesitation in lower gears at lower speeds....your spark is happening too late causing a loss of power. Just my 2 cents.
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Old 10-22-2009, 10:07 AM
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Re: hesitation and possible reasons, please give me your advice

i did alot of reading on this a while back on honda-tech and they were sayign it could even be a faulty knock sensor, and that alot of people that had bad 3k hesitation switched to a p28 and seeing as you can disable the knock sensor, they had no more hesitation. that was traditional like 5 year old hondatech though.
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