i have a 1994 inifiniti j30t with 189,000 miles...so u think it is the fuel injectors that are bad? cause i tried many fuel injector cleaners and still the same thing even been putting nothin but premium gas in it as it requires also changed the spark plugs pcv valve and fuel filter still the same thing and the check engine light is on? cause when the car is warmed up it shakes alot and then when i put it in drive the idle drops and it shakes and feels like its gonna die out? but when its warmed up and in park it doesnt idle low it stays normal but shakes...but when i put it in drive thats when it shakes and idles real low and at stops? when it goes low it will go slowly up a bit then drop up and down its really pissin me off i just wanna get it fixed cause i love that car alot and is all i have and i dont want it breakin down on me...one mechanic said its the fuel injector that one was bad and another said theres a misfire somewhere...
2007-12-19 12:15:20 · 7 answers · asked by live life to the fullest 1 in Cars & Transportation ➔ Maintenance & Repairs
try replacing the fuel filter..or your idle is very low
2007-12-26 21:44:50 · answer #1 · answered by mackie 5 · 0⤊ 0⤋
The 3.0 Mitsubishi engine is rough on valves. Pull your spark plug wires one at a time and see if you find one that makes no change in how the vehicle is running. When you find the culprit, make sure the spark plug isn't loose and the plug wire isn't corroded or falling apart. Pull the spark plug out and see if it is oil or gas fouled or carbon fouled. You may just need a decarb. Check for vacuum leaks, fuel leaks, and corrosion on the coil and distributor. If all of this checks out, it may be time to fork over a buck or two and have a professional look into it.
2007-12-19 16:53:58 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1; Complete Diagnostic Read Out!!!
2; Complete "Major Tune-Up"!!
3; Reset Idle Speed "With Engine at Operating Temp."!!
4; Replace EGR Valve & Throttle Position Sensor, May be O2 Sensor Also!
2007-12-19 15:02:09 · answer #3 · answered by sidecar0 6 · 0⤊ 0⤋
Pull one injector electrical connection at a time and see if the car gets worse or stays the same. If you pull one and it doesn't drop rpms lower or shake worse you've found which bad injector or wiring circuit. The only injector cleaner that works that is added to the fuel tank is Chevron Pro Guard.
2007-12-19 12:28:09 · answer #4 · answered by thebax2006 7 · 0⤊ 1⤋
it is so ordinary, or i assume it is not, yet i've got had the comparable good problem! I actually have a 2003 Nissan Altima with a matching mileage to it and this is been shaking for a while now. After persistently listening to from our familiar mechanic that the motor vehicle is great, we desperate to take it to Nissan and spent approximately $800 on God is acquainted with what the restoration the subject. actually an afternoon once I felt the motor vehicle start to shake back and it may proceed on and stale. ultimately, it have been given to the factor the place the service engine quickly sign grow to be no longer in basic terms continuously on yet could start to blink because of the fact the motor vehicle did the comparable issues as you have pronounced on your description: worry accelerating as though there wasn't sufficient ability, and in maximum cases shaking whilst i grow to be idle or as i began out braking. I went decrease back to my extensive-unfold mechanic considering that Nissan instructed me I had to attend an afternoon or with the intention to (consistent with possibility) get my automobile checked, and in accordance to his gadget it pronounced there grow to be a misfire that for the duration of contact changing between the coils, as you have pronounced. whilst he regarded at it the day in the past although, he theory it grow to be the spark plug that mandatory to get replaced, as you have additionally pronounced. We ended up changing between the coils ($80) and so some distance i've got felt a distinction, the sunshine hasn't confirmed up back yet, and it form of feels to be lots greater efficient. He instructed me to tell him if something adjustments. i will aid you be attentive to besides. maximum suitable of success. (even however this occurred to you 4 years in the past) lol What ended up being the diagnosis besides?
2016-11-04 02:10:11 · answer #5 · answered by dieng 4 · 0⤊ 0⤋
Try several applications of Chevron's Techron to clean carbon deposits from your engine
http://www.chevron.com/products/ourfuels/prodserv/additives/tcp.aspx
2007-12-19 13:02:46 · answer #6 · answered by bobweb 7 · 0⤊ 1⤋
Spark tracking to ground at spark plug caps possible.recommend dielectric grease placed on plug insulators to stop spark tracking to ground.
2007-12-19 12:42:28 · answer #7 · answered by (A) 7 · 0⤊ 1⤋