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performance and idling issues

 
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Old 01-07-2015, 03:53 PM
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performance and idling issues

I just purchased a 5th gen and new to the honda scene.I didn't realize that the engine was a h22a motor and the CEL is on for the map sensor. I replaced the map sensor and its still doing the same thing. It bogs and idles around below 500. When I put it in 1st gear and try to drive it acts like it wants to shut off but it doesn't. Somebody told me it could be my ecu or bad wire.need help asap gas mileage is very poor on it
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Old 01-07-2015, 07:48 PM
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Re: performance and idling issues

Welcome. I am new to my 01' SH as well. But nobody can help you, me included without some codes man. Go to some auto parts store and have them hook up to your OBD plug and download the codes. Then get back to us. Or you can jump your service plug and start counting the blinking CEL light. Search for it man or youtube it.

Good luck.
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Old 01-07-2015, 07:55 PM
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Re: performance and idling issues

The codes were p1259 p0108 which vtec malfunction and map sesnsor high circuit. I just changed the map and it.work. I was told im suppose to run a p13 ecu on myh22a. Its on a p5m ecu
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Old 01-07-2015, 08:07 PM
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Re: performance and idling issues

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Originally Posted by cityjack View Post
Welcome. I am new to my 01' SH as well. But nobody can help you, me included without some codes man. Go to some auto parts store and have them hook up to your OBD plug and download the codes. Then get back to us. Or you can jump your service plug and start counting the blinking CEL light. Search for it man or youtube it.

Good luck.







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Old 01-09-2015, 10:49 PM
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Re: performance and idling issues

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Originally Posted by RookieKid View Post
The codes were p1259 p0108 which vtec malfunction and map sesnsor high circuit. I just changed the map and it.work. I was told im suppose to run a p13 ecu on myh22a. Its on a p5m ecu
It's an H22a and not an H22a4?


If an H22a, it can run on an obd2 ecu as long as all the sensors and injectors etc were swapped from the A4 to work along with it.


You just won't get the full potential of the motor with that ecu. Not an issue really. Depending on where you live and how inspection is, you can convert to obd1.
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Old 01-15-2015, 04:35 PM
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Re: performance and idling issues

I dont know how to check if they did do the conversion with the injectors correctly. I just dont want.the car running like a v8 wasting gas like 10miles to the gallon
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Old 01-15-2015, 11:04 PM
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Re: performance and idling issues

I have a similar issue right now. Low, rough idle (500rpm) that seems like it is going to stall but never does. Also, bad gas mileage like 200 miles per tank or less (17-19mpg).

Already did plugs, wires, cap and rotor, cleaned iacv, cleaned air filter, cleaned throttle body

This seems a common issue, can anyone shed some light on what worked for them?
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Old 01-17-2015, 02:13 PM
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Re: performance and idling issues

The issue mine is having is that its not reading my map sensor and the wiring is fine. My.issue is that its running a different ecu that is suppose to be with it. H22a4 runs stock with p5m and jdm h22a runs with a p13. My 5th gen has a h22a motor running on a p5m ecu. My.question is if I convert the obd2 to obd1 harness with p13, will the check engine light come off due to the map sensor not being read by the other ecu.
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Old 01-17-2015, 03:22 PM
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Re: performance and idling issues

Alright rookiekid, this rant is not directly aimed at you....

Too many people buy a car, put in stuff outside of it's original design, not knowing if it works or not because some other crooked hat wearing bail jumper has one. Then they encounter issues and so another crooked hat wearing special olympiad looking sob says put in such n such a part. The car still don't act right so they pass it off on some unsuspecting person telling them all ya gotta do is xxxx to fix it.

Fast forward 7-8 years. But first some history... Back in the old days there were these guys that had compact sports cars. They wanted to go faster. So they invented stuff, swapped stuff using trial and error or put their heads together and shared knowledge. Some even made up some forum threads discussing what works and don't. There were a few hundred threads at most back then.
Now back to today. 63,000+/- people have put in parts not knowing if they work or not. All they know is it's JDM yo! They go to forums asking why there car doesn't act right. So now there are 63000 threads about the same thing.

Why does that matter? Because when you search you are faced with thousands of dead end threads instead of a few dozen informative ones. And the long time folks who moderate forums or know their business with these cars are tired of answering the same question over and over....and over and over.

The information is out there. Trouble is too many folks either won't or don't know how to scour the internet. And the more dead end threads that get created, the more difficult it becomes for the new guys to find old information.

Like I said rookiekid, it's nothing personal against you.

Try looking up what you seek at honda swap.com or honda-tech through your favorite search engine. And changing the locations of words in your search can yield you vastly different results. Google, Bing etc are great tools. But they are not mind good readers (even though the propellarheads there try)
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welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
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Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
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Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
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Old 01-17-2015, 03:23 PM
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Re: performance and idling issues

Double post/double rant remove edit.



The 5th gen preludes grandpa.
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Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 01-17-2015 at 10:33 PM.
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Old 01-17-2015, 09:21 PM
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Re: performance and idling issues

Actually I been in the car game for a long time, I was actually nissan guy my.whole life . I wanted something different and I have tried looking. So if there info out there please direct me there.that's why these forums are here for to help. I never dealt with the honda scene because on how atlanta has made the honda scene....
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Old 01-17-2015, 09:38 PM
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Re: performance and idling issues

I did...in the last post.

But here's one I found here at pz in about 8 minutes...
What ECU a 5th gen came stock with??

You say you are a Nissan guy. Well it sounds like you need to retrain your search engine.lol.
I've looked up so much Prelude stuff my 'auto fill in' thinks when I type in roofing nails or toilet parts that somehow relates to a honda prelude.

Hang in there brutha. And welcome to your new addiction.

Your idle/performance issue is quite common these days, what with ethanol and all that. Give your induction system a good going over.

In the do it yourself section here is a service manual thread. Grab ya a copy and study the emmisions chapter. There you'll find all the induction system along with some test procedures and trouble shoot techniques.
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Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 01-17-2015 at 10:39 PM.
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Old 01-18-2015, 06:09 PM
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Re: performance and idling issues

Arent you ignorant? All I did was ask for help. Simple question of why it isnt reading my map sensor......you turned it into trolling on people. Instead of trolling, dont you think that since.you have the "experience" in hondas, that you can help. Im not a dumbass I know.what ecu it comes with. If you actually see my comments then you will see what im talking about......yea I just got a honda and im suppose to know every thing about B,F,H,D,K series? Thanks for.the experience kid
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Old 01-18-2015, 07:34 PM
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Re: performance and idling issues

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Originally Posted by RookieKid View Post
Arent you ignorant? All I did was ask for help. Simple question of why it isnt reading my map sensor......you turned it into trolling on people. Instead of trolling, dont you think that since.you have the "experience" in hondas, that you can help. Im not a dumbass I know.what ecu it comes with. If you actually see my comments then you will see what im talking about......yea I just got a honda and im suppose to know every thing about B,F,H,D,K series? Thanks for.the experience kid

Your thread is titled performance and idle issues. You state you don't know if you have correct ecu. You state your car doesn't run correctly. You state a bunch of stuff...but really say nothing.

I tried helping you. And you call me a trolling kid? Nice.

Did you check your wiring at the map? At the ecu? At everywhere in between? Did you bother to change the gasket? Have you tried looking in the manual for other ideas?
I could go on...and it doesn't matter whether H/K/D, frigging honda, vw, nissan or kia...basics are basics.



Best of luck.
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Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 01-18-2015 at 07:58 PM.
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Old 01-18-2015, 08:25 PM
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Re: performance and idling issues

Ok and im going to say it.again my earlier comment said I have h22a motor with a p5m ecu idling below 500 rpms. The check engine codes popped up for vtex malfunction and map sensor high circuit.. the wiring are good and replaced.the map sensor. Do I need.to change the ecu to a p13 for.the map sensor code to come off and.idle fine? The vtec I know.whats wrong.wit that. I have replace.the gasket and.solenoid.
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Old 01-18-2015, 10:58 PM
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Re: performance and idling issues

Do you have any slack in the throttle cable?

Is the throttle body clean?

Is that the cold start idle, warmed up idle, or what?

Have you reset the ecu since changing the sensor?

Have you checked all your grounding points? Grounds can be a real pain in these cars.

Have you looked into alternative options for the map sensor fix? Its been an issue for many over the years.
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Old 01-19-2015, 12:55 AM
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Re: performance and idling issues

Dont know.if I have slack
Cold starts idles at 2k and warm up idle is 500
Ecu has.been.reset
All grounding points are fine
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Old 01-19-2015, 05:07 PM
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Re: performance and idling issues

Hi there, I would like to start off saying that I hope you got a good price on your lude if you bought it with an active cel and didn't care to get it checked out first by a mechanic before purchasing . Having said that..

Along with the statement that has already been floating around this thread, You can google search your codes quite easily. One link lead to a PZ thread about the code..
P0108 need help asap!!!

And this is what a member said

"Here you go, hope this gives you a start on Where to look bro.

Fault Code Definition

The Manifold Absolute Pressure Sensor/Barometric Pressure Sensor measures the rise and fall of the air pressure inside the Intake Manifold.This provides critical data needed for the Power Train Control Module (PCM) to control the Air Fuel Ratio, the Ignition Spark Timing, and many components of the Emissions Control Systems.The Manifold Absolute Pressure/Barometric Pressure Sensor converts the Intake Manifold air pressure into a voltage that is high when the Intake Manifold air pressure is high and low when the Intake Manifold air pressure drops to a vacuum. The P0108 code indicates a high voltage input from the Manifold Absolute Pressure Sensor/Barometric Pressure Sensor to the Power Train Control Module.

Common Problems That Trigger the P0108 Code

Manifold Absolute Pressure Sensor/Barometric Pressure Sensor is defective, Intake Manifold vacuum leaks, Faulty or corroded Manifold Absolute Pressure Sensor/Barometric Pressure, wiring, or connections
"

but at the end, the OP stated his problem ended up being that the timing belt had jumped teeth...

There are several things to work with right there.

Can you talk to the previous owner and get more of a back story on why it was swapped and what was done to it?
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Old 01-23-2015, 09:43 PM
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Re: performance and idling issues

Is there A possible way it's the ecu?
Owner won't answer anymore
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