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Old 22nd January 2009, 12:06   #76
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Originally Posted by ankitahuja View Post
Hmmm. So this is common when the CEL comes on. Is your speedo working? Anything else that you feel has stopped? Is the car powering well?

The FE reduces since the ECU goes into an open loop and the AFR (Air Fuel ratio) becomes rich. Consumes more fuel but the car runs better too

Yes, Speedo is working fine. engine temperature, power etc is normal. But one thing that is new is the Jerking that has started at low speeds, this i feel is due to the low idling.
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Old 23rd January 2009, 08:18   #77
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I thought some of you might want to have a look at this.
Attached Files
File Type: pdf O2SensorFaces.pdf (550.2 KB, 349 views)
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Old 23rd January 2009, 09:54   #78
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Man this is good stuff..where did you find it?? Any more detials of this type?

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Originally Posted by shreyas99 View Post
I thought some of you might want to have a look at this.
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Old 23rd January 2009, 12:25   #79
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Originally Posted by ankitahuja View Post
Very peculiar thing that I've noticed while driving with the malfunction light is that the light would NEVER come on if I didn't allow enough back-pressure to build up while driving. It did make me use the clutch more but saved from the CEL to come on.

With time, I know exactly how much back pressure to be allowed or clutch in before it goes on. Guys, try this out and post your findings. You can accelerate on 2nd or 3rd gear and let then let go your foot off the pedal. See if this causes the light to go on.
This is most probably either due to a leak in intake manifold vacuum or the injectors not closing properly when the accelerator is released . this causes the mixture to become either too rich or too lean and causes the cel to come on, which is basically an indicator whether the fuel is being burned optimally or not as reported by the oxygen sensor
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Old 26th January 2009, 13:00   #80
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Originally Posted by KSM-Vtec View Post
Man this is good stuff..where did you find it?? Any more detials of this type?

Actually found this on the net while searching for O2 self repair possibilities and came across this.
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Old 27th January 2009, 14:49   #81
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Hey guys i got a similar problem.
Gave my car for servicing [steering rack was leaking oil]
When i got it back, I noticed a few things.

1> Speedo wasn't working
2> Check Engine Light [Yellow] comes on when i use engine braking.
3> The CEL tends to come on quicker when the ambient temperature is hot.

one more thing: i saw a post [on TeamBHP itself] where someone stated that when your CEL light glows yellow there is an emission problem and if it glows red then there is a serious problem.
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Old 28th January 2009, 01:19   #82
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Originally Posted by ask77 View Post
This is most probably either due to a leak in intake manifold vacuum or the injectors not closing properly when the accelerator is released . this causes the mixture to become either too rich or too lean and causes the cel to come on, which is basically an indicator whether the fuel is being burned optimally or not as reported by the oxygen sensor
Hmmm. So how did it become OK as soon as a new speedo cable was put in?

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Originally Posted by Sprucegoose View Post
Hey guys i got a similar problem.
Gave my car for servicing [steering rack was leaking oil]
When i got it back, I noticed a few things.

1> Speedo wasn't working
2> Check Engine Light [Yellow] comes on when i use engine braking.
3> The CEL tends to come on quicker when the ambient temperature is hot.

one more thing: i saw a post [on TeamBHP itself] where someone stated that when your CEL light glows yellow there is an emission problem and if it glows red then there is a serious problem.
Exactly what I faced. It's the VSS (Vehicle Speed Sensor). Fix or get a new speedo cable and re-set the ECU.

And I don't think that the CEL can glow RED. It's only Yellow, and it's usually serious!
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Old 28th January 2009, 13:37   #83
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Cool, thanks

Sure thing.

will get the speedo fixed any idea how much the VSS / Speedo cable Costs?
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Old 28th January 2009, 14:20   #84
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Sure thing. Will get it done ASAP.

My mech is coming down to check a leaky radiator in some time.
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Old 28th January 2009, 18:05   #85
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Originally Posted by Sprucegoose View Post
Cool, thanks

Sure thing.

will get the speedo fixed any idea how much the VSS / Speedo cable Costs?
Quote:
Originally Posted by Sprucegoose View Post
Sure thing. Will get it done ASAP.

My mech is coming down to check a leaky radiator in some time.
Speedo cable costs a few hunderd bucks! It'll resolve the VSS issue.
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Old 28th January 2009, 22:20   #86
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In my experience with Optra there are no speedo or tacho cables . The sensors pick up the relevant data and the instrument panel is totally electronic with no mechanical cables etc. coming in. Although the instruments are obviously analogue
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Old 28th January 2009, 23:00   #87
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Quote:
Originally Posted by ask77 View Post
In my experience with Optra there are no speedo or tacho cables . The sensors pick up the relevant data and the instrument panel is totally electronic with no mechanical cables etc. coming in. Although the instruments are obviously analogue
Not the same for OHC. Speedo is not electronic and is cable driven.
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Old 29th January 2009, 12:12   #88
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Quote:
Originally Posted by vinayvtec View Post
Will be going to Honda his weekend hope they won’t say that O2 sensor has gone bad.
Hi Vinay, would you care to share with us the problem diagnosis done by Honda ?
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Old 3rd April 2009, 15:51   #89
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Quote:
Originally Posted by Sprucegoose View Post

My mech is coming down to check a leaky radiator in some time.
Quote:
Originally Posted by Sprucegoose View Post
Hey guys i got a similar problem.
Gave my car for servicing [steering rack was leaking oil]

2> Check Engine Light [Yellow] comes on when i use engine braking.
3> The CEL tends to come on quicker when the ambient temperature is hot.

one more thing: i saw a post [on TeamBHP itself] where someone stated that when your CEL light glows yellow there is an emission problem and if it glows red then there is a serious problem.
Dear Sprucegoose,

You seem to have been invaded by the same set of problems that I've experienced with my OHC type 2. For your clarification:
  1. In OHC 1.5Exi type 2 Engine Malfunction light (Red) and Emission Malfunction light (Yellow) are two separate bulbs. It is unlike an LED changing colours.
  2. Emission Malfunction light (yellow) NORMALLY does not indicate a serious fault. The culprit is USUALLY the Oxygen (O2) sensors. I have witnessed a surge in FE driving with the yellow light on & this has been corroborated by another member on this thread.
  3. Engine Malfunction light (Red) is SERIOUS. Honda recommends immediate turning off the engine (or it may turn itself off automatically) and not drive any further unless a specialist has investigated into the cause of the Red light. I have experienced this once and the car immediately lost power rapidly and engine shut itself off. It started again only for a minute when i turned the ignition. On subsequent attempts, the engine would not turn on again. I can't seem to remember the diagnosis of the problem. But it was something trivial.
  4. I drove my car for good 4 years with the power steering leaking until it was replaced. I used to always carry a can or two of Power Steering oil for topping up. It needed more frequent top-ups whilst driving on the winding hilly roads (more usage of the steering). However, in the last year the leakage gradually became intense.
  5. What is CEL?
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Old 11th April 2009, 22:17   #90
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I had a similar problem in my OHC and i got it rectified just a few days ago. All that it needed was an ECU reset - there was a remarkable difference in performance as well.
But a problem that i face now is that my speedo vibrates heavily unless the engine is idling. Help ?
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