My Prelude is having Idle problems. It was mentioned to me to change the MAP sensor, will this help?

 

changing the map sensor(if its bad) will only smooth the idle if your misfiring, not if its jumping up and down, that would be your fitv or iacv. MAP sensor tells the computer how much gas to inject per injector pulse by sensing the manifold vac. higher the vac the more load your car is under. so the injectors inject more gas and keeps your car from leaning out.

 

Thank you, so I need a MAP sensor because my car has been Idling funny. It was not going up and but it was not was not maintaining Idle at operating temperature.

 

the map sensor tells the ecu how much air is entering the throttle.

 

My Prelude is just not idling once it gets to operating temperature and it throwing misfire codes.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlownH23a &raquo;</TD></TR><TR><TD CLASS="quote">changing the map sensor(if its bad) will only smooth the idle if your misfiring, not if its jumping up and down, that would be your fitv or iacv.</TD></TR></TABLE>

 

try some of these steps

http://www.ef-honda.com/ben/Badidle.php

 

THC07, thanks for the info, I will let you know how it goes!

 

hi i know its an old post but i was wondering what the factory pressure is for an h22 i know its some number between 1 and 26. anybody got hte answer?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cody2689 &raquo;</TD></TR><TR><TD CLASS="quote">hi i know its an old post but i was wondering what the factory pressure is for an h22 i know its some number between 1 and 26. anybody got hte answer?</TD></TR></TABLE>

Pressure for what? Fuel pressure, oil pressure, tire pressure....what?

 

i think he was wanting headlight fluid pressure

 

i think hes asking what the difference in pressure between idle and full load is.....maybe?

 

idle you should see around 25-26" of vacuum, full throttle should be just under just above 0"

 

Don't be worried if it is at 20 or 22. most Honda's I've seen were.

and at WOT there is no vacuum

 

k thanks you i was wondering pressure at idle that helps. i just came to find out that my h22's map sensor was deleted and has a block off plate over it. could this be the reason my car is choppy as **** and is running richer than bill gates

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by THC07 &raquo;</TD></TR><TR><TD CLASS="quote">
Don't be worried if it is at 20 or 22. most Honda's I've seen were.

and at WOT there is no vacuum</TD></TR></TABLE>

Yeah, I'm at 22-24 at idle (on an H23 though).

 

any suggestions about the map sensor delete could this be why my car is running so rich and choppy. i just recently installed an apexi neo... i was wondering if the tool will even work now that i think of it cuz doesnt the map sensor tell the injectors what to do

 

why do you have a map sensor delete?

 

exactly my point the recent owner must have done that

 

wait where is the map sensor supposed to be located for an h22 93 prelude?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cody2689 &raquo;</TD></TR><TR><TD CLASS="quote">wait where is the map sensor supposed to be located for an h22 93 prelude?
</TD></TR></TABLE>

It could be on the firewall or on top of the throttle body. H-series have them both ways...

 

i have an extra firewall map sensor for sale, if you want it i could sell it to you for dirt cheap.

 

k mine must be located on the firewall... is it in the box where the wiring for the egr come out of...the box also has a few vac line running to the intake manifold...i actually have a 1991 accord with an h22. still hopeing its on the firewall im pretty sure it is


Modified by cody2689 at 7:51 AM 4/20/2007