Haha I always wondered what people were talking about....
But now, between 2800-3200 my car bogs, just like someone is grabbing my bumper. This is after the car is warmed up for awhile...
I never had this before, if you've been following I just had my timingt belt changed after I bent the key that holds my crank pulley and stuff in place...
I am suspicious of the cam timing, cause it's the only thing that has been changed, but I'm not sure if this would cause that? I 'feels' heavy on the intake side, but I don't know for sure. It really pulls in VTEC...
Since I discovered the problem I have done my plugs (NGK Platinum), cap and rotor, and ordered NGK wires. I am going to try some fuel injector cleaner as well, then do a valve adjustment and check to see if my cam gears are lined up right.
Don't use injector cleaner!!! You might as well piss in your tank. Don't waste your money or your time.
Try subbing a known good MAP sensor first. It's a known issue with Hondas and will usually solve the problem. If that doesn't work, check fuel pressure...
I don't know what makes them go bad. I have heard about it on several different models. My only guess is it is a part defect or that dust/debris somehow gets lodged in the diaphragm.
One thing I have noticed is that almost every year Denso has changed the p/n. My guess is that they have a hard time getting them reliable, or maybe accurate.
If you need one, I can send you one. It's easy enough to swap that someone in the club should be able to swap with you.
welcome to my world.....ive been cursed for about 3 months now! it sucks ass! so far ive replaced cap/rotor/fuel filter/plugs/cleaned out IM and TB and nothing has helped. i havent actually felt the hesitation lately but its still there because i did a run with a g-tech (yea yea, i know) and it put me at 14.80@95ish. that is almost exactly what i ran at the track with the hesitation and is almost exactly half a second slower than my personal best of 14.32@98mph. last night i put new coolant in and just basically messed around with some stuff and took it for a drive....seemed to feel somewhat better but the butt dyno doesnt tell you much! im goin to try swapping map sensors next. i got a price on a new one from honda yesterday....$290!!!!!!! holy ****! i wonder how much i can get it for after i start working there next week though
It's after the car is warmed up....as far as I can tell.....
But I'm noticing it at all lower rpms...which is what makes me think it's maybe an exhaust leak...
But basically whenever I try to accelerate in low rpms it does it...arrgh...I'm checking my timing tomorrow....since that's the only thing that has been changed since I noticed the problems..
and will an exhaust leak really cause that big of a hesitation? i lost almost a half second at the 1/4 track due to this hesitation, and the racing wasnt even in lower rpms!
yea, i am going to swap the map sensor soon....its a pain in the ass to get to though! there are two bolts holding the bracket that its on and they are hard to get to...doesnt help that i dont have a deep 10 or 12mm socket around either though i guess.
can you explain how the map can be causing this hesitation problem? i also have an idle problem ever since i sprayed out my manifold with carb cleaner. it worked wonders on cleaning it but now my idle jumps from 600-1300 at stop lights. any ideas?
Originally posted by 4bidden and will an exhaust leak really cause that big of a hesitation? i lost almost a half second at the 1/4 track due to this hesitation, and the racing wasnt even in lower rpms!
So your hesitaton just turned up? You didn't always have it?
Are the 4th and 5th gen MAP sensors the same? SR-Vs are hard to come by here...lots of fifth gens though...
it didnt just turn up....ive had it for about 3 months. im still using my h23 map from when i did the h22 swap. wonder if it could be giving me problems for that reason?
Number 7...where is it on my car? On the IM? their price is $198. It says the same part number for the H22 and H23, but who knows how accurate that is...
from what i got the same year lude uses the same map. but they change the part # every year. so im running a 92 si map sensor on a 94 jdm h22....that might not work well???
all the map sensors are the same...its a 5V sensor...just the mounting location varies, on my swap, it was mounted to the TB, my original motor had it on the firewall...any Honda MAP sensor will work, however the one that mounts to that bracket, only has one hole, so its hard to mount it to the TB, cuz it needs 2 holes for that...and if your MAP sensor was bad it would throw a code, mine threw the MAP code, and it sucked ass...hesistatied rediculously..and ran horribly rich...my plugs were dark black it was so rich...but my vafc connection had come apart, u can test the sensor with a multimeter..i seriously doubt that this is your guys problem...youd have a code if so, just my 2 cents..later
So does it really matter where you mount it then? So based on that you could buy a 5th gen MAP sensor for $40 and use that....and put it back by the firewall...it runs with vacuum tubes right?
My Idle air control valve is loose...the techs must have hit it when the reinstalled my strut bar...so basically it's half in half out...either way there's not a seal where it hits the intake...
Could this be the source of the problem? I know it doesn't make a ton of sense, but I mostly feel the hesitation after shifting....so would the IAC valve do this?
