boost69 Donating Members 737 Member For: 18y 11m 8d Posted 18/04/10 11:34 PM Share Posted 18/04/10 11:34 PM Guys my car idles very rough and in my attemt to solve this problem I have done the following...Changed the plugs standard Motorcraft plugs (they are gapped at 0.8mm)...as my car is stock as a rock...I have cleaned the throttle body and also used the Subaru Upper Engine Cleaner (this didnt fix my idle problem but the car does seem more eager to accelerate...)Should I be looking at cleaning injectors and changing petrol filter??? Link to comment Share on other sites More sharing options...
Benji_vs Donating Members 403 Member For: 15y 11m 19d Gender: Male Location: East Suburbs Melbourne Posted 19/04/10 12:00 AM Share Posted 19/04/10 12:00 AM Hey mate if your car is stock I wouldn't be using the .8mm gap plugs. That will most likely be causing your bad idle. Use the stock 0.9mm ford plugs. Link to comment Share on other sites More sharing options...
boost69 Donating Members 737 Member For: 18y 11m 8d Posted 19/04/10 01:10 AM Author Share Posted 19/04/10 01:10 AM Fair enough its the stock Denso Motorcraft plugs I have in the car...I was told by the Ford parts guy that they are pregapped to 0.8mm...maybe he didnt know what he was talking about...but the plugs I was given were for a BF Mark II XR6T...the same plug model number that came out of my car went into my car...though I am contemplating getting another new set all together and see if that makes any difference to my idle problem... Link to comment Share on other sites More sharing options...
Benji_vs Donating Members 403 Member For: 15y 11m 19d Gender: Male Location: East Suburbs Melbourne Posted 19/04/10 01:36 AM Share Posted 19/04/10 01:36 AM It may be worth a try swapping them out. Ive just heard that they can cause idle problem esp on stock cars. If not a clogged fuel filter can cause problems as well.How does the car perform higher in the rev range? If badly id suggest filter or coils if not probably plugs.Hope that helps. Link to comment Share on other sites More sharing options...
The_Bogan Donating Members 881 Member For: 17y 23d Gender: Male Location: Brisbane, Queensland Posted 19/04/10 02:13 AM Share Posted 19/04/10 02:13 AM how many km's has your car done??if you have cleaned out the throttle body and changed the spark plugs I would also be looking at:- coil packs- blocked fuel filter- faulty fuel pump - possibly faulty or dirty injectors. Link to comment Share on other sites More sharing options...
boost69 Donating Members 737 Member For: 18y 11m 8d Posted 19/04/10 02:50 AM Author Share Posted 19/04/10 02:50 AM Im siting on about 115,000KMS...(plugs changed with genuine plugs at around 105,000KMS) The car performs well all through out the rev range with no hessitation or flat spots or missfires etc...its as soon I stop at a traffic light you notice the car shaking...appart form that there are no other symptoms... Link to comment Share on other sites More sharing options...
boost69 Donating Members 737 Member For: 18y 11m 8d Posted 19/04/10 02:53 AM Author Share Posted 19/04/10 02:53 AM It used idle rough when the engine was still cold then by the time it wamred up it idled smooth...now its gotten progressivley worse where it idles rough even when its warm... Link to comment Share on other sites More sharing options...
The_Bogan Donating Members 881 Member For: 17y 23d Gender: Male Location: Brisbane, Queensland Posted 19/04/10 06:15 AM Share Posted 19/04/10 06:15 AM I would be looking at the 02 sensors then mate! Link to comment Share on other sites More sharing options...
boost69 Donating Members 737 Member For: 18y 11m 8d Posted 19/04/10 07:04 AM Author Share Posted 19/04/10 07:04 AM My engine light isnt comming on but I guess it can still be faulty and not trigger off any codes?...My average fuel consumption is around 16.5L/100 which is quite high for a stocker...I might take your advice...and change it as I do have the tell tale symptoms of a faulty O2 sensor...Rough Idle and higher than average fuel consumption... Link to comment Share on other sites More sharing options...
BensXR6T Member 478 Member For: 15y 3m 20d Gender: Male Location: Burpengary QLD Posted 19/04/10 09:30 AM Share Posted 19/04/10 09:30 AM Get it dyno'ed and you can kill 3 birds with one stone 1. Makes sure your 02 sensor isn't faulty2. Improves your fuel economy3. Increases the pleasure of driving your car Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now