Pwr Drop at 4200rpm in my Type S 6spd
12-24-2002, 10:08 AM
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Flying High Delta Pilot
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Pwr Drop at 4200rpm in my Type S 6spd
Well I took the car in as you know last week for the flashing check engine light that happens often in our cars. The concluded that it was a misfire code that keeps getting thrown. After they clearn my ecu of the codes and i got out to drive..get another tank of gas. I have a pwr drop at 4200..and it stays till it surges again at the vtec x-over point of 4800 then surges a little again at 6000. So I know im not making the power i should. Some one that owns a Taurus SHO told me they had this same problem in his cars..and that it ended up being bad coils.... Could this be the problem..or could the Type S have that same camshaft problem as the premium models where they loose power at 4000rpm??? Ive already put in a new tank of gas..and nothing. Acura is going to take a look at it after the 1st of the year...thats when my mechanic/friend gets back.. Thanks in advance for you imput.. Happy Holidays.
12-24-2002, 11:55 AM
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Interesting as there I experienced misfire codes but cleared it up myself. I have a message into the dealer requesting more information about the random misfire TSB on the NHTSA site; but I am sure the request will fall short.
I want to keep track of this to determine the source of the problem. One difference that immediately jumps out to me on the '03 is the change to NGK Iridium plugs. Since changing to Denso Iridium plugs the problem has not come back. But that could be coincidence.
I want to keep track of this to determine the source of the problem. One difference that immediately jumps out to me on the '03 is the change to NGK Iridium plugs. Since changing to Denso Iridium plugs the problem has not come back. But that could be coincidence.
12-24-2002, 12:25 PM
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Iridium..I thought we have platinum..on hondas..my prelude and S2000 Did. As for the check engine lights..they do go away..it flashes about 10 times..then gone..but now..my car has a surge..like a DOHC VTEC from a H22a4 or a B18c5 would at vtec. before the torque is just flat..there should be no dip at 4200rpm..because the torque in the type S is from 3500 to 5500. thanks for everyones..help..oh also..Scalbert..were is the TSB on this..would like to get a copy to send it..my dealer is awesome and that would help them out alot.
12-24-2002, 12:50 PM
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Yep, we have NGK Iridium plugs stock in the '03 model year, the '01 and '02 have Platinum. I was shocked when I pulled one and found this out.
As for a flat curve, not really. Our cars have a dip in power at about 3800 revs and does not climb back up until about 4200 revs. This is from the IMRC opening the butterfly valve in the plenum. See the below dyno:
As for the TSB, Click Here and then drill down through the selections.
Summary Below:
Technical Service Bulletins Summary
Make: ACURA
Model: 3.2CL
Year: 2003
Service Bulletin Number: 010302
Bulletin Sequence Number: 636
Summary Description:
INFORMATION ON TROUBLE SHOOTING MULTIPLE MISFIRE DIAGNOSTIC TROUBLE CODES P0301 THRU P0306. *TT
As for a flat curve, not really. Our cars have a dip in power at about 3800 revs and does not climb back up until about 4200 revs. This is from the IMRC opening the butterfly valve in the plenum. See the below dyno:
As for the TSB, Click Here and then drill down through the selections.
Summary Below:
Technical Service Bulletins Summary
Make: ACURA
Model: 3.2CL
Year: 2003
Service Bulletin Number: 010302
Bulletin Sequence Number: 636
Summary Description:
INFORMATION ON TROUBLE SHOOTING MULTIPLE MISFIRE DIAGNOSTIC TROUBLE CODES P0301 THRU P0306. *TT
12-24-2002, 01:08 PM
#7
Safety Car
Do you think its due to the plugs? I sure noticed a hell of a lot more problems after adding the fuel-pump... what is the history of the NGK Iridiums fouling out?
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12-24-2002, 11:52 PM
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Flying High Delta Pilot
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Well i think i got a tank of bad gas. The dip and surge seems to be gone today. If anyone has had this happen..let me know.
Des,
Des,
12-25-2002, 03:22 AM
#10
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Can u explain the "DIP AND SURGE" that ur talkin bout? Is it wat i think it is?? That when accelerating...and reaching the rev limiter u shift the gear but the rpms fall more then they should? Instead of going back to for example...5000 they r falling to 4500?? If thats not the problem..wat can u call this problem?
PH
PH
12-25-2002, 08:38 AM
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DUH!!!
Originally posted by gavriil
Could be bad spark plug wires. Yes.
Could be bad spark plug wires. Yes.
12-25-2002, 08:43 AM
#12
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Re: DUH!!!
Originally posted by 1baddasscls
Please refrain from giving ANY ADVICE till you learn a little bit more about your car. I mean...DUH!!! (Spark Plug Wires) Too fokken funny!!!
Please refrain from giving ANY ADVICE till you learn a little bit more about your car. I mean...DUH!!! (Spark Plug Wires) Too fokken funny!!!
12-25-2002, 11:33 AM
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mine has a little problem like you are talking about as well, but my "mechanic" said he thought the clutch was slipping and that was why the car wasnt grabbing...if its the case where you feel like you're losing power when shifting.....anyways im not a mechanic so im not gonna give advice, but let me know if you figure out the problem
12-25-2002, 08:31 PM
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Re: Re: DUH!!!
Originally posted by typeR
you should learn who you're telling to refrain from giving advice newbie...im sure gavril knows we have ignition coils on each plug but still there 's a wire going to each one...it could have bad wires or a bad coil pack...merry christmas jack ass
you should learn who you're telling to refrain from giving advice newbie...im sure gavril knows we have ignition coils on each plug but still there 's a wire going to each one...it could have bad wires or a bad coil pack...merry christmas jack ass
12-25-2002, 09:25 PM
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Ok..when im in first gear its the most noticable. As i floor it..when the revs climb..i get the first surge *boost per say* in power at 3800 when the runners switch. Then i get a dip..of id say..20hp and alot of torque because it stops pulling until about 5000rpm..when the power comes back and begins to rise all the way to redline. Im thinking bad plugs or wires.. My clutch is not slipping..i do know that..i have 7500 miles on my 6spd. On top of all this...i keep getting misfire codes..and thats why i think its the spark plugs.. Car goes in tomorrow. Hope to find out something then.
12-26-2002, 06:59 PM
#18
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Re: Re: Re: DUH!!!
Originally posted by 1baddasscls
I may be a "Newbie" to this board...But have been involved in SCCA Club Racing for oh... roughly 18 years. Owned and raced Datsun 510's till 87 then switched to a Honda CRX. Have owned 5 different Honda Product Street Cars and 3 separate Honda product Club Racing Cars. 1 CRX 1Civic Hatch and now co-own and race a Integra Type R. I am also a degreed Mechanical Engineer. Now then...where were you saying about advice Mr.Jack Ass?
I may be a "Newbie" to this board...But have been involved in SCCA Club Racing for oh... roughly 18 years. Owned and raced Datsun 510's till 87 then switched to a Honda CRX. Have owned 5 different Honda Product Street Cars and 3 separate Honda product Club Racing Cars. 1 CRX 1Civic Hatch and now co-own and race a Integra Type R. I am also a degreed Mechanical Engineer. Now then...where were you saying about advice Mr.Jack Ass?
12-26-2002, 08:43 PM
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No crystal ball numb nutts
What are you and this guy (Gavrell) lovers or what? I have got nuthin but heat from you and not a PEEP from him.....WTF? I have no crystal ball here ...like I can tell what he was talkin about in his post...and besides all that, The wires going to the coil pack rarely if EVER fail...(Asked my mechanic... (Works at Crown Acura) So...as far as racing goes at the strip...not my bag ...but will gladly invite you to a SCCA Solo(Autocross) meet to try your luck...can you turn your car?
Oh yea..CANCEL CHRISTMAS!!!<<<like I care if it was XMAS when I posted...What does that have to do with anything?
Oh yea..CANCEL CHRISTMAS!!!<<<like I care if it was XMAS when I posted...What does that have to do with anything?
12-26-2002, 08:50 PM
#20
Senior Moderator
Re: No crystal ball numb nutts
Originally posted by 1baddasscls
What are you and this guy (Gavrell) lovers or what? I have got nuthin but heat from you and not a PEEP from him.....WTF? I have no crystal ball here ...like I can tell what he was talkin about in his post...and besides all that, The wires going to the coil pack rarely if EVER fail...(Asked my mechanic... (Works at Crown Acura) So...as far as racing goes at the strip...not my bag ...but will gladly invite you to a SCCA Solo(Autocross) meet to try your luck...can you turn your car?
Oh yea..CANCEL CHRISTMAS!!!<<<like I care if it was XMAS when I posted...What does that have to do with anything?
What are you and this guy (Gavrell) lovers or what? I have got nuthin but heat from you and not a PEEP from him.....WTF? I have no crystal ball here ...like I can tell what he was talkin about in his post...and besides all that, The wires going to the coil pack rarely if EVER fail...(Asked my mechanic... (Works at Crown Acura) So...as far as racing goes at the strip...not my bag ...but will gladly invite you to a SCCA Solo(Autocross) meet to try your luck...can you turn your car?
Oh yea..CANCEL CHRISTMAS!!!<<<like I care if it was XMAS when I posted...What does that have to do with anything?
12-27-2002, 04:12 AM
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i remember reading about this (maybe this forum awhile ago) and this is what i remember.... the little dip happens in several cars, and bikes. this is programed in by the ecu for emission purposes. when they test cars for emissions standards, this little engine dip helps to lower the emissions levels... i'm not an expert here, just stating somehting i read before...
12-27-2002, 02:48 PM
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Well Crump. This didnt occur till just a few weeks ago so i dont consider it normal.. There must be a drop of 20hp or so. Almost can say its a bog..but it isnt.. the engine doesnt make weird noise.
12-29-2002, 08:34 PM
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Well I tomorrow *Dec. 31st* is that day. I take my car in for this weird power drop and surge. Ill let everyone know what it is. They are sure its a bad coil..or spark plug. Now that i know our car has iridiums.. Ive heard nothing but bad things about these. I might go to copper and change them every 10k miles like my friends with high HP supras do.
12-29-2002, 10:20 PM
#24
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Originally posted by CLS6SPD03
Well I tomorrow *Dec. 31st* is that day. I take my car in for this weird power drop and surge. Ill let everyone know what it is. They are sure its a bad coil..or spark plug. Now that i know our car has iridiums.. Ive heard nothing but bad things about these. I might go to copper and change them every 10k miles like my friends with high HP supras do.
Well I tomorrow *Dec. 31st* is that day. I take my car in for this weird power drop and surge. Ill let everyone know what it is. They are sure its a bad coil..or spark plug. Now that i know our car has iridiums.. Ive heard nothing but bad things about these. I might go to copper and change them every 10k miles like my friends with high HP supras do.
12-30-2002, 05:14 AM
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REMEBER they are using oxgenated fuel right now in the winter they say they are not but they are to lower emissions in the winter my gas mileage has suffered bad in a result to this. just my 2cents
12-30-2002, 06:56 AM
#27
Senior Moderator
Originally posted by CLSmike
Hey type r what did u run at the track .....I will run you?
Friendly ofcourse.
Hey type r what did u run at the track .....I will run you?
Friendly ofcourse.
12-30-2002, 12:47 PM
#32
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Originally posted by scalbert
Actually the '03 do come with NGK Iridium plugs, found out when I pulled mine.
Actually the '03 do come with NGK Iridium plugs, found out when I pulled mine.
12-30-2002, 06:31 PM
#33
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Ok..went to Acura today. We found the problem. The silenoid that opens and closes the runners in the intake manifold..is bad. Will not actuate the runners from short to long and visa versa. So they ordered me a new Silenoid. And hopefully thats that.
12-30-2002, 11:17 PM
#34
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I will let you guys know thurs if this solves everything..I have a solid check engine light now..
..Guess ill go check that out tomorrow..if it isnt one thing..its another.
..Guess ill go check that out tomorrow..if it isnt one thing..its another.
12-30-2002, 11:34 PM
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There is no DTC for a problem with the IMRC so the check engine light is not related to the dual stage manifold. Get the code and we might be able to help...
12-31-2002, 05:50 AM
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illl check today...but honda said that i could be getting the check engine like becuse there is not enough air in the mixture causeing the engine to be running really rich. Causin the misfire. Honda tech support told him to hook up the *code checker* to the ecu while we were driving it to do a "snap shot" of sorts to the fuel map. Nothing was out of the ordinary. Now im defiitely going to go up to honda today because the check engine light..when it just flashes. its not stored in the "long term memory" of the ecu. The code checker can only check that if the light flashes and you bring it right to the dealership..dont cut of your car. But with it solid..its not going off..i turned off m car..and restarted..It's still on. So Im definitely going o honda this morning. Thanks for everyones help. Desmond.
12-31-2002, 05:49 PM
#37
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Well..the code for the check egine light was just as the TSB stats..i got a misfire on cylinders 1 2 3 4 5 and 6..codes were P0301-P0306... They are going to give me new coils spark plugs..and that actuator.
01-01-2003, 10:59 AM
#40
Almost sounds like the shotgun method of troubleshooting. Replace everything to fix it. I know while it is still under warranty, who cares. I would prefer if they did that, the thing that would bother me is they would have no idea what was really wrong.