Pontiac Problems? Ask a Mechanic for Answers ASAP
Are you saying that 3 of the injectors are pulsing together while the other 3 are not? Then the other 3 pulse? so, it goes back and forth? What about the tan ground with high resistance?
Is there any way that the entire fuel charge can be delivered to the intake valve accidently?
Thanks. I'll get back to you in a day or two.
Hello. Just to let you know I haven't forgotten you. We still have not found the problem yet. Will let you know when we do. Thanks.
The only consistent code is for the coolant temp. sensor. The one in there now is new.
Thanks. I will. But it won't be 'till Monday. It's my next day off. How about a MAT sensor?
I got lucky. Here's the info. you want. Battery voltage is 12.22 with charger on. Yellow wire is 4.75 volt and black is 0.00 volt.
This is the wrong reading with it plugged in. With that reading the computer thinks the engine temp is -40f (fault minimum).Make sure its plugged in for readings. Replace coolant temp sensor and wire connector with new parts and retest.Expect to see 1.5 to 2.0 volts with it plugged in. Hotter engine lower volts on yellow wire.TX3 sensor and TX3A connector (standard ignition)
I unplugged the wire from he sensor and tested it for the readings I sent you. I'll try it again with wire connected. The sensor is brand new. I'll have to wait till my day off to change the wire.
I plugged the wire onto the sensor. With a battery voltage of 9.69. I measured 1.9 volts on the sensor wire.
Here's a separate problem on another car, if you want it. Of course, I'll pay extra for your help. I've already decided to pay you in full regardless of the outcome with the Fiero since you've been of great help. I just want you to hang with me until the end. Any way, I have another car, a 1979 AMC Pacer. I put the multi meter to the charging system. It's only charging at 11 or 12 volts. So, I went and got a new alternator. It's charging at about 13 volts. The battery and wires are all new. I go back to the auto parts store. They test it in the car and now all of a sudden it's charging at 14.5 volts. Later on in the day the battery was dead. What do you think?
it sounds like it was charging but you may have a battery drain. It must be a big drain to kill a new battery that quickly. With everything in the car turned off perform a battery draw test by putting a teslight in between a battery terminal and the battery. If the light lights up then there is a draw. Remove fuses one at a time until the draw goes away then figure out what is on that circuit that would be drawing power with the key off. If all fuses are out and there is still a draw look at unfused items like the alternator itself.As for the fiero, charge the battery and recheck and record the coolant temp voltage (both wires) with engine running. Recheck for codes in the computer record and report codes.
Hi. It's me again. I think I spoke too soon. Car running rough and coding 14 and 15. Friday I will get you the voltage you were asking for.
The car is back at my house, now. So, I'll do the work. Can you tell me exactly how to do these things? I have a good multi meter. I set it to 20 volts DC. Correct? Then what?
Exactly where do to touch the red probe? Right at the ECM/wire connection?
That's what I was thinking. Thanks. I'll have the info for you Friday. Talk to you then. Good night.
Hello. I need to let you know, I won't have those numbers until Monday. I have to work Fri. Sat., Su.. Get back to you on Monday. Thanks for your patience.
You know, just before I sent you that message, I was thinking ' My God , I hope he doesn't die before then! Then again, I hope I don't either!