89 Celica MAFM

Tiny
LAETHYN
  • MEMBER
  • 1989 TOYOTA CELICA
I wasn't able to find anything about this with a search, so if there is something, I apologize, and could someone direct me there. Anyways, on to my question:

I've got an 89 Toyota Celica that the rad blew up on me last week. I replaced that, it ran fine, however going up hill, it lost power and died on me. At this point, here is what the situation is:

I have spark, with new spark plug wires. The fuel filter is new, and the fuel pump seems to be working (gas sprays all over the place doing a simple test).

I can start the car, though it dies within about 10 seconds if I disconnect the Mass Air Flow Meter. While it's running like that, it dies immediately if I a) give it gas, or b) plug the MAFM back in.

With the MAFM plugged in, it will not start.

My understanding is that with a problem with the MAFM, it can cause the fuel pump to not function correctly, and with it unplugged, the oxygen sensor is doing it's job and shutting down the system.

Is this correct? And is it correct in assuming (yep, I certainly know what assuming does!) That if I replace the MAFM, my vehicle will function?

Now, I know as much about repairing cars as I do about. Say neurosurgery, which is next to nothing. Though I can pump gas with the best of em!

Cheers, and thanks in advance for anything :)
Do you
have the same problem?
Yes
No
Tuesday, June 27th, 2006 AT 2:50 PM

2 Replies

Tiny
RASMATAZ
  • MEMBER
Bear in mind that MAF sensor controls the fuel pump ground circuit thru the circuit opening relay. Also test the circuit opening relay it could be there.

Malfunctioning MAF will kill the pump circuit-meaning No gas to Injectors. The circuit is incomplete.

Try replacement
Was this
answer
helpful?
Yes
No
Friday, June 30th, 2006 AT 10:02 PM
Tiny
LAETHYN
  • MEMBER
Yeah, I replaced the MAFM with one pulled from a u-pull it place for 40$. Car runs beautifully now. Thanks for the response!
Was this
answer
helpful?
Yes
No
Saturday, July 1st, 2006 AT 3:42 AM

Please login or register to post a reply.

Recommended Guides