Got a 97 3.0l v6 Magna when i start it when it is cold it runs and drives good but when it starts to warm up it starts to missfire and shutter, at idel its fine in nutrel it will rev fine, but when i put my foot flat when driveing it will clear over 3500-4500 rpm and it will drive fine if i drive relly slow at low rpm but if i want to drive normal it will do it, i have changed the plugs and leads, no change, and then i unpluged the air flow meter plug, idels like crap but when driven its fine no missfire i have tryed 2 other air flow meters and it would be fine for about 5-10 mins and then it missfires like it did befor, CAN SOMEONE PLEASE HELP ME!:pray:

could be yur crank angle sensor.
try dissconnecting yur battery over night and see wat it does in the morning

otherwise could be a fuel issue. wens the last time u changed yur fuel filter???

could be yur crank angle sensor.
try dissconnecting yur battery over night and see wat it does in the morning

otherwise could be a fuel issue. wens the last time u changed yur fuel filter???

it cant be the fuel, it runs fine with out the air flow meter pluged in,
i will try an other crank angle sensor soon and i will let u no how it go's.:rofleek:

rough idle can be a vacume leak or injector problem

Have you changed the King Lead, this is the one from the coil to the distributor?

Second is get the injectors cleaned.

Clues are that if the car starts and idles OK but is a pig when you try to accelerate, then OK when running at a reasonable speed - If so is likely to be electrics. Either the leads or plugs are breaking down under load.

If the idle is rough, acceleration is rougher then back to not quite right when cruising then it is likely to be injectors.

I had similar problems with the KS Verada several years ago and it was cused by ALL the Leads and Spark plugs - Then much better but not perfect.
Then had the injectors cleaned and balanced off the car - PERFECT.

Hope that this helps.

Gerry

Any chance you got a load of bad fuel.

Disconnect at filter, put about 1 litre in a glass bottle, let it settle. Check colour, water content or flotsom in the fuel.

Hope this helps

it cant be the fuel, it runs fine with out the air flow meter pluged in,
i will try an other crank angle sensor soon and i will let u no how it go's.:rofleek:

Since it drives OK with the AFM unplugged, it might be an issue when the engine is running in closed loop mode (warm engine, in cruise conditions). Try unplugging the O2 (oxygen) sensor and driving around as before, see if this alleviates the problem.

Have you changed the King Lead, this is the one from the coil to the distributor?

Second is get the injectors cleaned.

Clues are that if the car starts and idles OK but is a pig when you try to accelerate, then OK when running at a reasonable speed - If so is likely to be electrics. Either the leads or plugs are breaking down under load.

If the idle is rough, acceleration is rougher then back to not quite right when cruising then it is likely to be injectors.

I had similar problems with the KS Verada several years ago and it was cused by ALL the Leads and Spark plugs - Then much better but not perfect.
Then had the injectors cleaned and balanced off the car - PERFECT.

Hope that this helps.

Gerry

And where would you find this king lead on a '97 TF v6?

this sounds like the same problem im having with my 94 ts 3lt 6
ive had injectors cleaned and serviced (off car)
plugs and leads
oil and filter
fuel filter

next thing to check for me is the dizzy and rottor button

thanks guys i have tryed allmost all things you said but no good, sold the car today and will be buying an other tf or te next week, thanks for your time guys.