Most prevalent between 2500-3000 rpm. Started after dealer replaced bad coil pack. no odb2 codes. Gets worse if car is driven hard. At low speed the car seems to lope away from stop, not smooth. Kind of like a V8 with a couple of bad cylinders. The car was very smooth before the coil pack went bad.
Make sure the EGR system is working. Sounds like the engine is running lean.
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
SOURCE: 1994 Cougar XR7 Engine idling rough and running rough at low and
Not saying this for sure, but I had the same problem, and i have a 1994 xr7 V6 3.8 L , and all u need to do is set the idle down manually because your computer could have seen that the injector was stuck open, and tried to turn up idle to keep up with the amount of fuel being pumped, worth a shot :P
SOURCE: bad vibration engine trans under load
seems your problem is within your clutch,defective part,usually a defective release bearing will cause gear shifter and pedal vibration but not as bad as yours,but by pressing on clutch pedal vibration stops,point to clutch!
SOURCE: 2004 Audi A4 misfire
it is always a good idea to stay with o.e.m parts and yes there is updated parts in the newer coils. and yes the M.A.F will also cause misfire faults but will not make check engine light flash or make car shake and shudder. also check you wire harness going to your coils make sure your ground wires are not cracked. That could be the main culprate. good luck hope this helps
SOURCE: Galant 4G63 Non Turbo 2.0 Litre 1988 ... has bad
sounds like its breaking down, check your ignition system, test your leads, check your plugs, check your ignition coils etc etc etc.
Testimonial: "Proof in the pudding - the engines performance has totally changed with a simple but hidden leak in the intake manifold area ( now sealed ) ."
105 views
Usually answered in minutes!
×