Shaking when idling

[dc4u]

Hey guys,

For a while now, i've noticed that the integra shakes as if its about to stall when i am idling. it will shake for a couple of seconds, pause, and then shake again... my passengers always point it out but i can hardly feel it unless i have my hand on the gear stick (but thats probably cause im just so use to it lol)... it dosn't violently shake or is extremely obivous but it is out of the ordinary. This dosnt happen when accelerating or braking.

i've done some research and have found that the most likely cause is worn/cracked motor mounts but i have no idea where these are and how to change them, and if this is even the real problem.

Can anyone vouch for this? and if so, how much would it cost me to replace? (for parts and for labor) If you know of anything that could be causing this other than the above, please fill me in!

THANKS GUYS :thumbsup:

[Tegzieboi_BAR]

i dont think its the mounts as ud notice is a bit more on take off. My car's mounts r gettin a lil old n crustly so when i start takin off i really hav 2 baby the clutch not 2 stall.

I bought myself some aftermarket leads a while bak n a bit after installin em i noticed that on idle the car was "shakin" a bit, obviously 1 of the cylinders wasnt gettin enough spark, i just jammed the lead on a bit tighter n the prob went away n hasnt come bak.

im assuming that it could b ignition-related, check that ur spark leads r on ok n if the prob persists i think its time 4 a spark plug change!

[VTECMACHINE]

It could be spark plug related, or Spare lead related.

It could also be a fueling issue. how many KM's has your car done? Try cleaning your injectors, Replacing fuel filter. Fuel pump is more than likely fine, but it could be a dirty/clogged. Or you might just be getting a bit too much fuel at idel.

[dc4u]

thanks for the input guys. It has really cleared things up.

i think i am due for both new spark leads and a fuel filter replacement. I'll order some in and see if it fixes the problem this weekend.

Thanks guys

[Tegzieboi_BAR]

make sure u get the spark plugs themselves coz in my opinion its most likely the prob, fit them n c if it runs better b4 u get the leads coz the leads will set u bak around $120 n copper plugs mite only b around $20 all up, if that.

[dc4u]

hey guys,

i got new spark plugs and leads, replaced my fuel filter and the car is still shaking when idling... any other suggestions?

thanks

[squish85]

something to do with Ignition Module (if honda has one. not sure) ? check it out with a qualified mechanic or workshop... My gf's old ford used to do that at idle and would slowly putter to a stall... turns out that the ignition module was dying..

Otherwise.. check your idle rpm settings.. should be 750rpm +-50 (from memory).. You should really go visit a qualified workshop to check it out before the problem gets too big to solve...

Just my 2 cents worth of opinion and experience... :)

[A-man]

check ur throttle body it might need a cleanout.... big overlooked thing....


it is possible for it to be engine mounts.. depends how bad they r... what is ur tacho doing????

the ignition module is in the dizzy... u can test them just grab a honda manual for the correct procedure on doing this.. they do wear out but the fords r notorious for it...

[outatime]

it could be the map sensor. try to replace it. i had the same problem with my ek..

[dc4u]

thanks for the suggestions guys.

well the revs slightly drop when it starts to shake... the shake is not strong enough to feel like its about to stall and its never really actually stalled... just when i stop, the car alternates between shaking and not shaking. its not obvious from the outside or anything like that so i cant figure it out!

ummm im not very engine orientated but i have cleaned my throttle body already... not sure if its the ignition module but anyidea what would specifically be wrong with it?

and whats the map sensor?

thanks

[Sp00ny]

thanks for the suggestions guys.

well the revs slightly drop when it starts to shake... the shake is not strong enough to feel like its about to stall and its never really actually stalled... just when i stop, the car alternates between shaking and not shaking. its not obvious from the outside or anything like that so i cant figure it out!

ummm im not very engine orientated but i have cleaned my throttle body already... not sure if its the ignition module but anyidea what would specifically be wrong with it?

and whats the map sensor?

thanks


- Clean out your IACV/FITV (DIY: IACV (http://www.team-integra.net/sections/articles/showArticle.asp?ArticleID=1174) FITV (http://www.team-integra.net/sections/articles/showArticle.asp?ArticleID=1167)) Links Coutesy of Team-Integra.net

Check Voltage/Current at Battery Terminals, Check all Grounding Points (Battery To Chassis, Trans To Chassis) (UNLIKELY BUT IS A POSSIBILITY)
Ensure there is little corrosion and no rust on the main grounding points of the electrical system. Taking them off anyway and using 400 grit sandpaper around the gounding point will see a voltage gain if they are aging.

- Check Condition of Engine Mounts (Can cause shaking if excessively worn)

Also check what RPM your car idles at and fluctuates to...this will help determine wether the engine is physically changing in rpm dramatically or its a engine mount problem.

Cleaning out/inspecting your IACV/FITV is probebly your best shot.

MAP Sensor = Manifold Absolute Pressure Sensor...it is used to determine air pressure inside of the manifold. It could be a contributor but I personally would be looking into at least cleaning the FITV/IACV prior to looking at anything else...

[A-man]

very good

[dc4u]

I cleaned both the IACV and FITV a while ago but then i got the issue of rising idle at start up. Also cleaned my throttle body at the same time.

Just got a new battery as well.

where are the grounding points for the electrical system and how do i know if the engine mounts are cracked?

thanks

[A-man]

i wouldntve done the battery but thats me... i duno y u would was it buggered?


maybe its time to look at ur ignition?

[outatime]

dc4u, like i mentioned earlier, replace the map sensor.. wreckers should have it.. cost less than 50bux.

happened to my ek and it fixed the problem.

[Sp00ny]

I cleaned both the IACV and FITV a while ago but then i got the issue of rising idle at start up. Also cleaned my throttle body at the same time.

Just got a new battery as well.

where are the grounding points for the electrical system and how do i know if the engine mounts are cracked?

thanks

Replace the map sensor as mentioned above...if that doesnt work take it to a trusted mechanic for a diagnosis, at least if you have done some trouble shooting you will be able to narrow it down for him.

Cleaning your IACV/FITV may not fix the problem, you may need a new assembly.

[dc4u]

yea i needed to replace my battery anyways... it was very weak.

thanks heaps for the help fellas... im sorry for not knowing much and constantly asking about it but can someone post up a pic of the map sensor or explain what it looks like/where it is?

rekon anyone sells them on ozhonda?

[A-man]

it says map sensor assy on it


otherwise it could b on the manifold near the injectors on the ports for the 1st clyinder



uve also gotta remember that a mechanic would do the same things as what u have done and this is saving u money anyways i need to do the same things to my cars and its good to know these things the information is good for more then just hondas

[dc4u]

agreed! thanks guys

oh if this clarifies anymore... my idle dosnt really drop much at all... its sitting at about 500 to 600rpms at idle i think.. it might drop a mm but its not even noticeable when the car starts to shake!