Question about Cars & Trucks
HI i bought a skyline r33 gtr recently and it was running fine, then it started hesitating on and off and the rev's at idle speed would go down and run lumpy, i had a feeling it could be spark plugs or coil packs, so i bought new spark plugs and fitted them it seems to run alright for a bit then it started running lumpy again. Then just recently it started running really it started idling at 100 rpm THATS RIGHT 100!! but the car still didn't cut out so i drove it home and when i got home there was smoke coming from the engine bay it looked white but it was dark and it didn't smell like oil and the car now just cuts out when i try to start it and even with foot on gas it starts then dies as soon as i let my foot off but if i hold my foot on at a certain point it wants to die then it goes up then wants to die again then goes up! I;ve tried to be as descriptive as i can i hope someone has the patients to reply
SOURCE: 95 maxima rough idle
The injector could definitely trigger a misfire code, but you also mentioned that you had a mass airflow sensor code , that code code be responsible for te sluggish moment of the vehicle and rpm going up and down. However if you have a misfire onCyl#6 and the coil and the plug is good the ONLY other thing to cause a mis-fire would be the injector. To check the injector get a NOID light, you can get one at almost any auto-parts place. To use unplug injector plug from the bad injector and connect it to NOID light the light should have a steady PULSE/ligt flickering. If light flickers fine then injector is bad and will need to be replaced. If light doesn't flicker or flickers intermittently then you may have a bad wiring to that injector. Check if wiring is good, then you may have a bad cam sensor or sensor gear. Good Luck and contact if you need more help. Thanks for using FIX YA
Posted on Jan 13, 2009
I would suspect a vacuum leak. At idle under high vacuum the air fuel mix is being leaned out until you have misfiring so bad the engine quits. The exhaust smells rich because even a lean mixture, if it doesn't light off, if full of unburned fuel. At road speeds, the vacuum is low so the engine doesn't care if there is a small leak somewhere. It is getting most of its air through the open throttle. Check all your vacuum lines but remember that even if every line is okay, it could still be leaking from an old cracked intake manifold gasket.
Posted on Jan 28, 2009
Check the timing and compression of the engine. It sounds like you either have a blown head gasket or a the timing jumped.
Posted on Mar 26, 2009
I just worked on this problem a couple of days ago. If the motor is a 3.0 liter. The idle control valve is located at the bottom of the throttlebody assembly right below the bore for the throttle butterflies..What usually causes this valve to go bad is the mechanical part of the sensor sticks as it becomes sludged or carboned up. Manufacturer claims that the valve cannot be cleaned and should only be replaced....It's a high dollar repair to replace this sensor as your engine coolant flows through this electrical valve. The valve idles the car fast when cold, as the antifreeze gets hot the valve drops the idle down.....I have successfully cleaned several of these valves and cured the dying problems...
First remove the air filter top cover and the tubes that connect to the throttlebody. In the right throttlebody you will see a port right before the butterfly. Under the throttlebody you have a black plastic sensor with a 2 wire terminal. Remove the 2 phillps screws and pull off the electrical part of the valve. you will feel a magnetic pull while removing. Remove slowly and catch the black sealing oring, and there will be a metal washer also.. The shaft that is exposed is the mechanical control of the valve. Rotate the shaft and it should feel sticky if bad..Using a throttlebody spray cleaner spray into the small square port of the right bore, rotate shaft and spray until stickfree.....Reassemble
Posted on Apr 05, 2009
try blocking off the valve that connects the inlet manifold to the exhaust and see what happens ??? or just disconnect it from the inlet manifold and try that before you remove the pump to have it overhauled ,Yes we do seem a bit short of motor vehicle categorys if not a yank it doesnt exist ,and as for the spelling¿¿¿¿ DA??? pigs tails??? fire wires??looks like we will have to re invade the colonys and teach them proper queens english .The only problem with that is and thats all the english have left the UK ,Its now a third world muslim country .Anyway best of british with it ---from spain
Posted on Sep 12, 2009
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