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Why does my Accord randomly looses torque

Tiny
STUPEDMONKY
  • MEMBER
  • 2001 HONDA ACCORD
  • 198,000 MILES
For some time now, if I am at any time driving my accord sometimes its fast, and some times its like boging a little, for example, if I am driving down the road, not applying to much gas and the car is driving perfict, then randomly it feels as if I just let go of the gas, the car hardly accelerateing. Now I rebuilt the engine about 15-20 thousand miles ago, and there is no check engine light. The only thing I can think of is a problem with my ignition coil/ module, any thoughts?
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Thursday, November 10th, 2011 AT 2:50 AM

18 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Sounds more like a partially clogged cat converter. I would have a shop do a back pressure test and snap throttle test to confirm.

Roy
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Thursday, November 10th, 2011 AT 2:56 AM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
The car has a high flow 2.5'' exhaust with a high flow cat.
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Thursday, November 10th, 2011 AT 2:09 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Though the CEL might not be indicating, there could be trouble codes. Symptoms indicates a possible fault with the O2 sensor
which could be working but out of specs, so called a lazy O2 sensor. A scan tool would be able to tell you if it is within specs.
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Thursday, November 10th, 2011 AT 2:14 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
Good point. Is it possible to be the ignition? The distributor is the only thing I have not replaced and the car has just about 200k
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Thursday, November 10th, 2011 AT 5:40 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Ignition and distributor faults do not cause temporarily loss of power.
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Thursday, November 10th, 2011 AT 6:35 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
Humm. If thats the case, wtf? My sensor 1 is brand new. My sensor 2 is reading normal. Could it possibly be my MAP, at one point about 6 months ago had the car boosted and I had to splice the map harness for a 3 bar universal MAP and sins took off the turbo soldered on the stock map connector and made it the motor "stock" with a exhaust and intake
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Sunday, November 13th, 2011 AT 3:30 AM
Tiny
JJIMENEZ8891
  • MEMBER
  • 29 POSTS
It normally would not be the MAP sensor with out triggering a MIL. The vehicle could have High head pressure, or even possible need a valve adjustment may be cause of loss of power. Also if this had happened after the intake install or before?
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Sunday, November 13th, 2011 AT 3:46 AM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
It just started recently. Ive had the car for over 2 years and its never done it till now. I still have the boost gauge hooked up just to see for vacuum, at idol its around 22-25 bar of vac. And when driving normally it usually never goes about 10-5 bar of vac.
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Sunday, November 13th, 2011 AT 4:04 AM
Tiny
JJIMENEZ8891
  • MEMBER
  • 29 POSTS
I dont belive it is a vacum issue it seems to be normal with rules out plugged exhaust issue. Any other issues recently? Overheating or anything?
?
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Sunday, November 13th, 2011 AT 4:24 AM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
No, the car has been running great besides the this problem.
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Sunday, November 13th, 2011 AT 8:00 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Is the new sensor OEM?
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Monday, November 14th, 2011 AT 12:31 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
Its a witch tho 02? Its a denso, same number as the OEM
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Monday, November 14th, 2011 AT 11:08 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
Sry for the confutation of the previous post. I was just thinking. If my air temp sensor was failing could it not possibly lean/ rich out my AFR if its randomly spiking?
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Tuesday, November 15th, 2011 AT 2:51 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
The only way to find out if any sensor is failing is to plug in a scan tool and monitor each sensor indivisually to compare them with specfications and note if any is at the outer edge.
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Tuesday, November 15th, 2011 AT 2:12 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
Well this problem at got to the point where not the car wont even start.
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Friday, November 18th, 2011 AT 12:43 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
If the car would not start, then you need to check what is missing.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Our DIY section shows how to go about checking what is missing.
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Saturday, November 19th, 2011 AT 3:59 PM
Tiny
STUPEDMONKY
  • MEMBER
  • 41 POSTS
So the no start was actually due to a clog in a fuel screen. But even still with the car running again, the initial problem still persists.
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Monday, November 21st, 2011 AT 9:33 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
When starting from cold, do you need to crank the engine for a longer than normal time?

If there is any clogging in the fuel screen, there could be other areas that require checking for clogging. You might need to flush the fuel system.
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Tuesday, November 22nd, 2011 AT 11:27 AM

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