Transitor Unit

[J30T_]

Well yesterday I toke my car to my mechanic and after about 2 hours of diagnosting the car he came to the conclusion that it is my transitor unit that is causing my car to miss fire.....its only running on about 3 cylinders..........I was Wondering if the transitor unit can make that happen??????????????And why is it so expensive for a transitor unit??

Thank you for all your help

[gr8scott72]

Well yesterday I toke my car to my mechanic and after about 2 hours of diagnosting the car he came to the conclusion that it is my transitor unit that is causing my car to miss fire.....its only running on about 3 cylinders..........I was Wondering if the transitor unit can make that happen??????????????And why is it so expensive for a transitor unit??

Thank you for all your help

What part is he calling a transitor unit? Does he mean transiStor unit? If he does, what part is the transistor unit?

Is he talking about a coil pack?

[J30T_]

yea he means the transistor unit....the part is just a little square box with a chip in it and som kind of gel......basically what it looked like was the gel got so hot and thats what caused it to go.....but im new to most of this and I really just need good advice...thanks

[gr8scott72]

yea he means the transistor unit....the part is just a little square box with a chip in it and som kind of gel......basically what it looked like was the gel got so hot and thats what caused it to go.....but im new to most of this and I really just need good advice...thanks

I have no idea what part you are talking about. Get him to show you the part. A picture would be great.

[J30T_]

This is the piece the little black square piece..

Thanks

[gr8scott72]

This is the piece the little black square piece..

Thanks

I guess I don't even know where that goes. Did he show you where on the car it is?

[J30T_]

Yes it is above my engine it plugs into a wire harnest

[AZhitman]

It's $340 from the dealer with NICO discount.

Try a used one off another car first.

[elan]

for my background in electronics this does not sound reasonable.

transistors will most likely cease completely than work half-and-half

you need to find an oscilo-scope and check the input and output signals and see what is happening on both sides, or as others have said find a one from another car and check first before investing that money into such an expansive part.

[Gerardjg]

Wow aftermarket ones are $400.00

http://replacement.autopartswa...false

[J30T_]

Well here is the weird thing I changed the transitor unit and now 5 cylinders are running and one still is out and its needs an injector......I am wondering if my mechanic is doing somthing sneaky??? Cuz when i brought it to him 5 cylinders were running and then after him touching it 3 were only running and i needed a Tran unit......But my transitor unit was cracked... I need advice that

Thank you

[95-J30tt]

ok so if you have changed the ignitor chip and it didnt do much.... perform a power balance test (it is easy, you can do it yourself without help), get the engine to warm up a little.... take one plug off at a time (blue arrows in the attached pic), each plug when removed, should drop the rpm slightly and cause the engine to shake, if you have a gas/spark problem, one of your plugs will not change the way the engine runs, that will narrow down your search.... do that and then update of what you get

http://q45.org/gallery/v/car/spark.JPG.html

[J30T_]

You have been a huge help thanks!!! Im gonna try it tonight and give you an update tomorrow!

Is it easy to learn how to change and injector yourself?

[95-J30tt]

if you have a dremel and a vacuum, you could do the replacement yourself (one injector at a time)

[yodawill2000]

Just a FYICarlos (Fuzzycats.com) has said that only 1 injector requires plenum grinding.I havent had too ,,, Yet