i have been trying to hunt this problem down since i bought this thing. at idle rpms hunt and tach flutter at idle. wot seems ok. it has a little miss a part throttle. i have changed all vac lines, throttle body, plugs, cap, rotor, coil, map sensor, wires (msd), timing is right on, also flow tested / cleaned injectors,and intake gaskets. when i disconnect the wire to set timing the timing mark is rock solid every time. when i reconnect the wire it starts jumping around a couple of degrees. even with the wire disconnected it idles funny. i have yet to check iac counts after throttle body swap but they were in the 0-8 range. no codes have popped up ever while ive had this truck. does anyone have any ideas? the truck no longer dies when i put it into gear but the rpm's go pretty low and it sounds like it might die now. i'm thinking something in the computer/wiring harness...any help PLEASE!!! i'm almost ready to sell this thing it has given me nothing but problems! BTW the exhaust is sputters every couple seconds like a wire is arching out of something. PLEASE!
idle hunt/tach flutter need help!!
- Thread starter gmcturbo
- Start date
kreepstr said:
Then stay away from the Ty. Go have a beer read a book..whatever. Wrenching while being pissed is never good.
Tach flutter = Ignition repeat after me Tach=Ignition
Doesn't matter what you have replaced parts can be defective out of the box or fail quickly. Ask me why I don't use taylor wires anymore. Here are some thoughts off the top of my head
1.Are all of the wires snapped on correctly.
2.If you crack a insulator on plug install=problems. Easy to do. Look at them closely
3.Cap and rotors don't last long. Look at them again.
4.Coil check
5. Ohm the wires. Msd 8.5 will have very little resistance.
6. Pull the wheel wells. (This is the first step in doing anything to a syty,ask my friends). At night in a dark location point the truck in a safe direction. With the engine idling use a spray bottle and mist water around the ignition components. You will see a nice electrical storm if anything is leaking. If you see nothing at a idle try this. Set the emergency brake and have a assistant hold the brakes hard and build some boost. Have he/she keep their hand on the key so that if the truck moves against the brakes at all the ignition can be cut.
A local Ty had sparks flying everywhere. Coil wire was arcing to the manifold. The coil itself was leaking voltage everywhere. Several wires had spark jumping to any ground nearby.
If you still find nothing find a good distributor and swap it out.