Idle Issue
10-09-2010, 01:50 PM
#1
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Join Date: Oct 2010
Location: Newport News Va
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Idle Issue
Hello my name Chris
When I start my car and it has been sitting for at least 2 hours for some reason it doesnt want to hold its idle so I have to hold in the gas until it warms up then it can hold itself.
A friend said it may be a bad air flow sensor and I read somewere else that it can be adjusted.
Another person said the EGR Valve is to blame.
Can anyone help me?
When I start my car and it has been sitting for at least 2 hours for some reason it doesnt want to hold its idle so I have to hold in the gas until it warms up then it can hold itself.
A friend said it may be a bad air flow sensor and I read somewere else that it can be adjusted.
Another person said the EGR Valve is to blame.
Can anyone help me?
10-09-2010, 07:49 PM
#3
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Join Date: Oct 2010
Location: Newport News Va
Posts: 23
Its an 82 non-turbo 2+2 280zx
After its warm it runs great! We just put a new head on it and swapped all the bolts over to studs.
New timing kit also. The timing was done when the motor was together again, wich was about 3 weeks ago.
New spark plugs, fuel injectors, and water pump too.
The only other problem with the car is that the radiator is messed up.
Like if you drive it for a long distance it will start to get hot.
Is the air flow sensor nessesary?
Can I remove it?
And what exactly does it do?
Sorry for so many questions at once.
After its warm it runs great! We just put a new head on it and swapped all the bolts over to studs.
New timing kit also. The timing was done when the motor was together again, wich was about 3 weeks ago.
New spark plugs, fuel injectors, and water pump too.
The only other problem with the car is that the radiator is messed up.
Like if you drive it for a long distance it will start to get hot.
Is the air flow sensor nessesary?
Can I remove it?
And what exactly does it do?
Sorry for so many questions at once.
10-09-2010, 08:38 PM
#4
Intrawebz Wizard
Join Date: Feb 2009
Location: Vernal, UT
Posts: 3,176
Idk what your idle issue is, you didn't give enough details. but its probably your IAC sense they fail commonly
YES! Its VERY important. No AFM, car wont run.
No
Uh idk Measures the airflow into the engine so it keeps the air/fuel ratio correct.
Its ok every has questions
YES! Its VERY important. No AFM, car wont run.
No
Uh idk Measures the airflow into the engine so it keeps the air/fuel ratio correct.
Its ok every has questions
10-10-2010, 09:24 AM
#7
Big Poppa
Join Date: Jan 2005
Location: Mission, British Columbia
Posts: 4,499
prolly the air reg. i removed mine and it does the same thing, cold start injector hooked up or not. its not a big deal, but get that rad fix pronto, no need to overheat a perfectly good engine.
10-12-2010, 01:16 PM
#13
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Location: Newport News Va
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What does the air regulator look like?
10-12-2010, 04:15 PM
#14
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Join Date: Apr 2006
Location: Concord, NC
Posts: 2,826
Follow this link:
Service Manuals
Grab the manual for your year... once downloaded, look for the PDF that says "Engine Fuel"
Service Manuals
Grab the manual for your year... once downloaded, look for the PDF that says "Engine Fuel"
10-12-2010, 06:30 PM
#18
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Join Date: Oct 2010
Location: Newport News Va
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10-12-2010, 08:19 PM
#21
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Location: Newport News Va
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Oh my bad. I meant that I had figgured out what the air regulater was.
But we did order the vaccum control valve from nissan and I will post up what the result is. According to Tidewater Z, the symptoms that my car is having are caused by the bad valve wich they said was very common so were trying that first.
But we did order the vaccum control valve from nissan and I will post up what the result is. According to Tidewater Z, the symptoms that my car is having are caused by the bad valve wich they said was very common so were trying that first.
Last edited by RaTT92; 10-12-2010 at 08:22 PM.
11-02-2010, 06:06 PM
#23
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Location: Newport News Va
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So after the car warms up the idle gets much better and the after it runs for a while the car starts running like its got a turbo because at around 2500 you get a sudden burst of power that feels like your being pinned to the seats, what causes this?
11-02-2010, 10:02 PM
#24
More Than Meets The Eye
Join Date: Feb 2005
Location: Mesa, Az
Posts: 5,120
I would say your Z is running a lot better. And everything is working properly. It should put you back in the seat. When it is running 100%. I know from experience. These N/A's alone, have quite a kick for stock. I can't imagine what a Turbo would feel like. I would probably get whiplash. lol
11-04-2010, 10:14 AM
#25
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Location: Knoxville, TN
Posts: 28
2500-4500 is your power band for a non turbo ZX...third gear is probably where you feel it most...second and fourth will be strong but third around 3500 is the "im haulin ***" gear.
Off the line the stock ZX doesn't have nearly the torque other cars have, but upwards of 45mph and on...hang on! I used to smoke all american cars once on the interstate from 60 mph up...but they would eat me up off the line...it is the gearing ratio.
The Imports of that time were almost all like that...Toy Supra is exactly the same way in the late 80's...all geared for high end speed.
Off the line the stock ZX doesn't have nearly the torque other cars have, but upwards of 45mph and on...hang on! I used to smoke all american cars once on the interstate from 60 mph up...but they would eat me up off the line...it is the gearing ratio.
The Imports of that time were almost all like that...Toy Supra is exactly the same way in the late 80's...all geared for high end speed.
