Honda and Acura Model Specific Forums

DAtegLs · 10-17-2009, 11:08 AM

well i havent found anyone with the same issues im haing so heres my post...

so i have a 91 DA with just a b18a in it and everytime i come off idle at like a red light or anything, it stumbles till about 3500rpm. itll be fine cruising but as soon as i hit the gas hard and put the motor under a load it stumbles. it also has i slightly rough idle.
brand new plugs, wires, dizzy cap & rotor, fuel pump, fuel filter, air filter, o2 sensor...

no CELs
my fuel pressure is almost 12lbs low.
runs rich at idle.
im thinkin because the fuel psi is low the fuel isnt completely atomizing therefore its not being all burned, causeing the rich issue?

if it helps at all, heres some mods to the car;
b18b1 intake manifold
K&N short ram
bypassed FITV
stock type NGK plugs
Magstar 8.5mm wires

Just got my license back yesterday after a 2 month suspension and this is making me sad...any help would be cool.

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ek-g6 · 10-17-2009, 02:33 PM

You could be misfiring, i would check spark plugs, spark plug wires, dizzy, dizzy cap, and dizzy rotor.

DAintegraGSR · 10-17-2009, 07:43 PM

I had a similar issue in my 92 GS-R like you said i would come off a red light and the car would lack power like crazy. I would even pin the pedal down and it would slowly start pickin up and then all of a sudden BOOM all power back. I dont know why but all i did was replace my main fuel relay never had the problem again.

aldj310 · 10-18-2009, 05:53 AM

did it do this before you parked the park or was someone driving the car when you couldnt

DAtegLs · 10-18-2009, 10:18 AM

well all the ignition stuff is almost brand new...the car sat but id go out every couple days and start her up...partly to keep the gas fresh and stuff, but mostly just because i like the sound of her and i felt cool sittin in her! LMAO!
but yea i just replaced the plugs yesterday and it helped alot, but still has a slight stumble. then pulled the fuel psi reg. off my other teggy to see if mine was bad and my fuel psi did jump up a couple pounds but is still slighty low. that also helped a touch. ima snag the map sensor off my other teg and see if it changes anything...ill post back.
oh yea...only does it once its at op. temp...not when its cold.

DAtegLs · 10-18-2009, 05:46 PM

well after swapping the MAP sensor out it barely stumbles at all anymore...still does a touch off idle or under a load. but not too noticeable...so any suggestions to make it go away completely? cuz im stumped...

ktran911 · 10-18-2009, 06:22 PM

did you check your grounds?

DAtegLs · 10-19-2009, 02:14 AM

yes and its also ground out with two gauge cables off the valve cover, therm. housing, fuel rail, and block. all stock grounds are tight.

DAtegLs · 10-19-2009, 06:05 PM

well i packed my bike up and headed to the skatepark, when about halfway there a CEL kicks on. its a code 43. started stumbling again under a load. sounds like its running off three cylinders when this happens.
oh yea and my temp gauge is jumping around from cold to op. temp. it just bounces back and forth...ugh! this is pissing me off!

DAtegLs · 10-22-2009, 12:51 PM

thinking about it...coolant temp sensor goes out, sends a false reading to the ECU, which changes the fuel map accordingly, therefore the 02 sensor picks up a rich reading and throws the imfamous code 43????????
anyone? am i way off?

DomesticIKiller · 10-22-2009, 02:34 PM

That makes sense. I would try swappin the temp sensor. How many miles on your motor? Might be time for a new one anyways. And temp sensors read to the ecu in Ohms, so if its bad, you can always check the ohms at the plug and check it to the manual, Or buy a new one, cheap fix. Good luck

DAtegLs · 10-22-2009, 07:47 PM

i think its somewhere around 135,xxx...its the third motor ive had in the car. lol
yea ima swap the temp sensor tommorow with one out of my garage and see it it helps.

DAtegLs · 10-24-2009, 01:19 AM

well changing the coolant temp sensor worked for a couple hours...than back to a slight stumble...nowhere near as bad but it still bugs me. this depresses me.

eaglewesman · 10-24-2009, 06:52 PM

Quote:

Originally Posted by DAintegraGSR

I had a similar issue in my 92 GS-R like you said i would come off a red light and the car would lack power like crazy. I would even pin the pedal down and it would slowly start pickin up and then all of a sudden BOOM all power back. I dont know why but all i did was replace my main fuel relay never had the problem again.

x2 main relay always causing these kinds of problems. try replacing that. also, check your timing.

DAtegLs · 10-28-2009, 01:23 PM

i had mine fixed last summer but ill replace it again and see what it does.
btw. thanks guys for the help so far! i really needed it.

jjspec · 10-28-2009, 01:59 PM

Tighten the ground on the tstat housing.

DAtegLs · 10-29-2009, 07:51 PM

all grounds are tight. thats the first thing i checked.
this is getting sooooo annoying! i cant, for the love of all things pink, figure this out!!!!!

DAtegLs · 10-30-2009, 01:54 AM

new symptom...
on the way to and from a party tonight i realized that my tach was figiting. if i was cruising between 2-3k (thats as high as i got cuz i like saving gas lol) or accelerating, my tach would bounce a little bit. like if i was cruising at 2400 it would randomly jump to 2700 or so and come back down to 24. it almost does it with the missfires. like at the same time it missfires. ICM or dizzy itself maybe?

jjspec · 10-30-2009, 04:55 AM

Check to make sure that the terminals are tight at the icm. That could be an issue.

DAtegLs · 10-30-2009, 05:58 AM

well i just gave her a bath. yea, at 7:30am! so what wanna fight about?! lol
anyways, oonce shes drie ima take it off and look in the dizzy and make sure everything is solid.

95tegbuild · 10-30-2009, 10:40 AM

did you change all the sensors on the motor and manifold to obd0?

DAtegLs · 10-30-2009, 06:12 PM

ummm...yea, its all OBD0.

DAtegLs · 11-03-2009, 08:14 PM

i got off my ass and changed the main relay and it did fine for about halfway to the skatepark then started to stutter again...im going to change out the 02 sensor again just to do it. any other ideas though? just to remind you guys, it only does this when it reaches op. temp. when its cold it drives great...

ILS_09 · 11-03-2009, 08:49 PM

check timing is where I would start

God-Driven · 11-04-2009, 03:50 PM

I had the same problem with my and it end up been the ground on the tranny, it looks fine but I checked it with and ohmeter and there was a lot of resistance, also the sensor that sends the signal to the cluster for coolant sensor is not the same that sends the siganal to the ECM, one thing I would suggest is disconnect the exhust pipe before the cat and see if it makes any diffrence, the cat could be clogged it might be a lot of work but its worth the shot.

10-17-2009, 02:33 PM	#2
ek-g6 Member Join Date: Sep 2007 Location: Fresno, CA, United Statses Of A Posts: 1,243	Re: 91 Teggy stumbles like shes drunk! You could be misfiring, i would check spark plugs, spark plug wires, dizzy, dizzy cap, and dizzy rotor. __________________ 92' Gsr B1.9b beast Join the Brute force.

10-17-2009, 07:43 PM	#3
DAintegraGSR Junior Member Join Date: Apr 2005 Location: Port St. Lucie, Fl, United States Posts: 149	Re: 91 Teggy stumbles like shes drunk! I had a similar issue in my 92 GS-R like you said i would come off a red light and the car would lack power like crazy. I would even pin the pedal down and it would slowly start pickin up and then all of a sudden BOOM all power back. I dont know why but all i did was replace my main fuel relay never had the problem again.

10-18-2009, 05:53 AM	#4
aldj310 New User Join Date: Oct 2009 Posts: 6	Re: 91 Teggy stumbles like shes drunk! did it do this before you parked the park or was someone driving the car when you couldnt

10-18-2009, 10:18 AM	#5
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! well all the ignition stuff is almost brand new...the car sat but id go out every couple days and start her up...partly to keep the gas fresh and stuff, but mostly just because i like the sound of her and i felt cool sittin in her! LMAO! but yea i just replaced the plugs yesterday and it helped alot, but still has a slight stumble. then pulled the fuel psi reg. off my other teggy to see if mine was bad and my fuel psi did jump up a couple pounds but is still slighty low. that also helped a touch. ima snag the map sensor off my other teg and see if it changes anything...ill post back. oh yea...only does it once its at op. temp...not when its cold. __________________ <Mr.OASiS>

10-18-2009, 05:46 PM	#6
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! well after swapping the MAP sensor out it barely stumbles at all anymore...still does a touch off idle or under a load. but not too noticeable...so any suggestions to make it go away completely? cuz im stumped... __________________ <Mr.OASiS>

10-18-2009, 06:22 PM	#7
ktran911 New User Join Date: Oct 2009 Posts: 1	Re: 91 Teggy stumbles like shes drunk! did you check your grounds?

10-19-2009, 02:14 AM	#8
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! yes and its also ground out with two gauge cables off the valve cover, therm. housing, fuel rail, and block. all stock grounds are tight. __________________ <Mr.OASiS>

10-19-2009, 06:05 PM	#9
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! well i packed my bike up and headed to the skatepark, when about halfway there a CEL kicks on. its a code 43. started stumbling again under a load. sounds like its running off three cylinders when this happens. oh yea and my temp gauge is jumping around from cold to op. temp. it just bounces back and forth...ugh! this is pissing me off! __________________ <Mr.OASiS>

10-22-2009, 12:51 PM	#10
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! thinking about it...coolant temp sensor goes out, sends a false reading to the ECU, which changes the fuel map accordingly, therefore the 02 sensor picks up a rich reading and throws the imfamous code 43???????? anyone? am i way off? __________________ <Mr.OASiS>

10-22-2009, 02:34 PM	#11
DomesticIKiller 1997 Acura Integra My Garage Join Date: Oct 2008 Location: Jefferson, Ohio, United States Posts: 8	Re: 91 Teggy stumbles like shes drunk! That makes sense. I would try swappin the temp sensor. How many miles on your motor? Might be time for a new one anyways. And temp sensors read to the ecu in Ohms, so if its bad, you can always check the ohms at the plug and check it to the manual, Or buy a new one, cheap fix. Good luck

10-22-2009, 07:47 PM	#12
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! i think its somewhere around 135,xxx...its the third motor ive had in the car. lol yea ima swap the temp sensor tommorow with one out of my garage and see it it helps. __________________ <Mr.OASiS>

10-24-2009, 01:19 AM	#13
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! well changing the coolant temp sensor worked for a couple hours...than back to a slight stumble...nowhere near as bad but it still bugs me. this depresses me. __________________ <Mr.OASiS>

10-28-2009, 01:23 PM	#15
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! i had mine fixed last summer but ill replace it again and see what it does. btw. thanks guys for the help so far! i really needed it. __________________ <Mr.OASiS>

10-28-2009, 01:59 PM	#16
jjspec Member Join Date: Jun 2006 Location: Macon, Ga Posts: 1,265	Re: 91 Teggy stumbles like shes drunk! Tighten the ground on the tstat housing. __________________ Single Cam D16Z6 Integra 11.1 @ 127 JJSPEC.com 478 621 5000

10-29-2009, 07:51 PM	#17
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! all grounds are tight. thats the first thing i checked. this is getting sooooo annoying! i cant, for the love of all things pink, figure this out!!!!! __________________ <Mr.OASiS>

10-30-2009, 01:54 AM	#18
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! new symptom... on the way to and from a party tonight i realized that my tach was figiting. if i was cruising between 2-3k (thats as high as i got cuz i like saving gas lol) or accelerating, my tach would bounce a little bit. like if i was cruising at 2400 it would randomly jump to 2700 or so and come back down to 24. it almost does it with the missfires. like at the same time it missfires. ICM or dizzy itself maybe? __________________ <Mr.OASiS>

10-30-2009, 04:55 AM	#19
jjspec Member Join Date: Jun 2006 Location: Macon, Ga Posts: 1,265	Re: 91 Teggy stumbles like shes drunk! Check to make sure that the terminals are tight at the icm. That could be an issue. __________________ Single Cam D16Z6 Integra 11.1 @ 127 JJSPEC.com 478 621 5000

10-30-2009, 05:58 AM	#20
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! well i just gave her a bath. yea, at 7:30am! so what wanna fight about?! lol anyways, oonce shes drie ima take it off and look in the dizzy and make sure everything is solid. __________________ <Mr.OASiS>

10-30-2009, 10:40 AM	#21
95tegbuild Junior Member Join Date: Oct 2009 Location: Upstate new york Posts: 26	Re: 91 Teggy stumbles like shes drunk! did you change all the sensors on the motor and manifold to obd0?

10-30-2009, 06:12 PM	#22
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! ummm...yea, its all OBD0. __________________ <Mr.OASiS>

11-03-2009, 08:14 PM	#23
DAtegLs Junior Member Join Date: Aug 2007 Location: montgomery, al, United states Posts: 278	Re: 91 Teggy stumbles like shes drunk! i got off my ass and changed the main relay and it did fine for about halfway to the skatepark then started to stutter again...im going to change out the 02 sensor again just to do it. any other ideas though? just to remind you guys, it only does this when it reaches op. temp. when its cold it drives great... __________________ <Mr.OASiS>

11-03-2009, 08:49 PM	#24
ILS_09 Junior Member Join Date: Sep 2006 Location: Merced, Ca, Us Posts: 181	Re: 91 Teggy stumbles like shes drunk! check timing is where I would start

11-04-2009, 03:50 PM	#25
God-Driven Junior Member Join Date: Mar 2007 Location: Houston, Tx, u.s.a Posts: 224	Re: 91 Teggy stumbles like shes drunk! I had the same problem with my and it end up been the ground on the tranny, it looks fine but I checked it with and ohmeter and there was a lot of resistance, also the sensor that sends the signal to the cluster for coolant sensor is not the same that sends the siganal to the ECM, one thing I would suggest is disconnect the exhust pipe before the cat and see if it makes any diffrence, the cat could be clogged it might be a lot of work but its worth the shot.

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