1995 3.4L DOHC PCM (was: Cylinder No.5 not firing)

Through some internet research I just found out that this transistor I'm looking for is a Metal-Oxide, Single-Gate transistor. Does this help anyone help me?

Steve

Just got off the phone with IR, the part number is not in their system. They told me it must be a custom OEM component, figures. He gave me the tech support line phone number for Delco-Remy, I hope they are the people that made this PCM. Anyone know?

Steve

Post this over in sci.electronics.repair, and sci.electronics. What you have is a house numbered transistor. there will be no listed cross. What you need to to is ID if its a PNP, NPN or a Mosfet. Then what type of package its in. A transistor substitution manual will be of help trying to ID the package type. From that information, someone can try to make a guestimate cross. If this drives the coil directly, it will be a higher current device. I am not sure in your case if it does.

A DVM ohm meter with a diode check function will be of help in the ID.

Bob

Thanks for the advice. I have determined that it is an N-Channel MOSFET in a TO220 case.

Steve

Maybe something like a IRFZ44 then? They are common in car stereo amps for power supply switchers.

What about an IRF3707? That is the one that I selected before we started this conversation.

You probably looked at these pages then:

Bob

No I haven't seen those. Never saw that page on the IR website. Thanks. How do I know for sure which one is best for me? If I find a good replacement I will replace all 6 drivers. If I just measure the resistance of my injector coils and then select one that way?

Steve

Nevermind, there are only 2 to choose from apparently. The IRLZ44N and the IRLZ44NV, and it appears the IRLZ44NV doesn't exist, so there is only one choice.

Steve