need help bad
#1
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need help bad
i have a 89 turbo ll mods are walbro pump,fcd, rewired fuel pump,eng rebuilt 6 months ago (street ported) racing beat full exhaust.if you go at a constant speed above 3500 rpm it starts to buck ,you can hear it in the exhaust popping ,saturday i adjusted tps with the tool from mazda ,the car idles fine ,car has new fuel filter ,spark plugs and spark plug wires are 6 monts old , inj were cleaned 6 months ago by rc eng.
codes strored are 1,18 ,33
i installed a new thermosensor with a brand new connector saturday.
what wire is the ground to the trailing coil?
where does the tach feed from?is it the crank sensor or the trailing coil?
any suggestions ?please dont hesitate!
codes strored are 1,18 ,33
i installed a new thermosensor with a brand new connector saturday.
what wire is the ground to the trailing coil?
where does the tach feed from?is it the crank sensor or the trailing coil?
any suggestions ?please dont hesitate!
#3
Former Moderator. RIP Icemark.
Re: need help bad
Originally posted by vmb
what wire is the ground to the trailing coil?
what wire is the ground to the trailing coil?
where does the tach feed from?is it the crank sensor or the trailing coil?
#5
Former Moderator. RIP Icemark.
set your digital multi-meter for AC voltage, and ground the negitive lead of your meter. The voltage should increase and decrease with engine speed.
Or if you have a meter with a tach input, just hook up right on it
Or if you have a meter with a tach input, just hook up right on it
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#8
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I the vacum line for your crank case pressure still hooked up to your turbo inlet duct and is the check valve still good? Also do you have the stock boost pressure sensor still in the car( located on passenger side fender under hood)? Does it still have the stock oraface in it(little round plastic piece in boost line)? If the check valve for your crank case pressure line is bad you will have trouble starting your car. It make it feel like your not keeping fuel pressure. Also the orafice will make your engine buck if it is not installed. You can get one from you local dealer for about $2.88. When they pull up the parts screen it will be under the intake section.
#9
RX-7 Bad Ass
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Re: Re: need help bad
Originally posted by Icemark
The car's body grounds the coils. They must be bolted onto the body.
The car's body grounds the coils. They must be bolted onto the body.
I used to think the same thing. The ground is the spark plug. The coil builds up a current field, then when it gets the "fire" signal from the ECU it sends the output to ground, which is the engine. On the way to ground, the current jumps a little gap called the spark plug, igniting the mixture. Pretty ingenious, eh?
Dale
#11
Former Moderator. RIP Icemark.
Re: Re: Re: need help bad
Originally posted by dcfc3s
Bzzt
I used to think the same thing. The ground is the spark plug. The coil builds up a current field, then when it gets the "fire" signal from the ECU it sends the output to ground, which is the engine. On the way to ground, the current jumps a little gap called the spark plug, igniting the mixture. Pretty ingenious, eh?
Dale
Bzzt
I used to think the same thing. The ground is the spark plug. The coil builds up a current field, then when it gets the "fire" signal from the ECU it sends the output to ground, which is the engine. On the way to ground, the current jumps a little gap called the spark plug, igniting the mixture. Pretty ingenious, eh?
Dale
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