2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

91 fc na won't start

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Old Sep 16, 2016 | 12:51 PM
  #26  
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From: tulsa,ok.
Originally Posted by David Jones
Yes i can take a pic when I get home from work. Thanks man
A pic isn't really necessary, but just cross reference your CAS with the one in the link.
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Old Sep 16, 2016 | 12:58 PM
  #27  
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Originally Posted by satch
A pic isn't really necessary, but just cross reference your CAS with the one in the link.
Ok I'll do it when I get home from work! Thanks for taking the time to help me out!
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Old Sep 16, 2016 | 01:00 PM
  #28  
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From: █▬█ █▄█ █▬█ █▄██▬█ █▄█ █▬█ █▄█
Whats the number on the side of the injectors? should be a 19550-XXXX
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Old Sep 16, 2016 | 01:10 PM
  #29  
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From: Ohio
Originally Posted by Fuhnortoner
Whats the number on the side of the injectors? should be a 19550-XXXX
Im not sure off the top of my head. Their 460cc I beleive, whatever the factory size where they are an exact match I do know that though.
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Old Sep 16, 2016 | 02:11 PM
  #30  
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read the number on the side, or take a volt meter and check resistance of the 2 pins. Let us know the result. Do you know if your car uses the resistor boxes for the injectors or not?

Should be right here:


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Old Sep 16, 2016 | 02:34 PM
  #31  
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From: tulsa,ok.
He has an S5 in this instance.
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Old Sep 16, 2016 | 03:07 PM
  #32  
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They could still be low impedance. He stated he replaced them. What color are they?

Theyre either

86-87 13B NA, low square center, 460cc, red, 195500-1350
88 13B NA, high square offset, 460cc, purple, 195500-1350
89-91 13B NA, high oval center, 460cc, red, 195500-2010
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Old Sep 16, 2016 | 05:31 PM
  #33  
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From: Ohio
Originally Posted by Fuhnortoner
They could still be low impedance. He stated he replaced them. What color are they?

Theyre either

86-87 13B NA, low square center, 460cc, red, 195500-1350
88 13B NA, high square offset, 460cc, purple, 195500-1350
89-91 13B NA, high oval center, 460cc, red, 195500-2010
They are the 89-91 13b na 460cc red ones. I just got home and im going to do the CAS now.
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Old Sep 16, 2016 | 11:07 PM
  #34  
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From: Smiths Falls.(near Ottawa!.Mapquest IT!)
is your AFM plugged in?
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Old Sep 17, 2016 | 05:31 PM
  #35  
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ok i got the car to TDC. rerouted the vacuum line for the pressure sensor to how it was supposed to go. De flooded the car. it seems the car is stuck in security mode. I tried pulling the car and jumping it and when doing so the horn goes crazy. I checked the main fuse and it had corrosion in it so im guessing its bad? not sure what else to check
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Old Sep 17, 2016 | 05:31 PM
  #36  
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From: Ohio
also what is the afm?
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Old Sep 17, 2016 | 06:15 PM
  #37  
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Air flow meter
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Old Sep 17, 2016 | 06:22 PM
  #38  
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From: tulsa,ok.
Originally Posted by David Jones
ok i got the car to TDC. rerouted the vacuum line for the pressure sensor to how it was supposed to go. De flooded the car. it seems the car is stuck in security mode. I tried pulling the car and jumping it and when doing so the horn goes crazy. I checked the main fuse and it had corrosion in it so im guessing its bad? not sure what else to check
If the alarm was set you would not be able to get the starter to turn over as the alarm would prevent it from happening. If the fuse is corroded then replace it. It is secured in place by a screw so be cognizant of it.
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Old Sep 17, 2016 | 06:37 PM
  #39  
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From: Ohio
Originally Posted by satch
If the alarm was set you would not be able to get the starter to turn over as the alarm would prevent it from happening. If the fuse is corroded then replace it. It is secured in place by a screw so be cognizant of it.
Ok i just got back from getting a new one. But when i was trying to jump start it, the alarm would go off. What could be the cause of that??

And yes the afm is plugged in as well.
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Old Sep 17, 2016 | 06:39 PM
  #40  
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Also whenever we got done pulling it we could smell gas in the exhaust?? Its almost like the fuel is just flowing and not pressurizing or something. Some one suggested i test pins on the ecu but im not sure how to check them. if anyone has any insight.
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Old Sep 17, 2016 | 07:24 PM
  #41  
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From: tulsa,ok.
Originally Posted by David Jones
Ok i just got back from getting a new one. But when i was trying to jump start it, the alarm would go off. What could be the cause of that??

And yes the afm is plugged in as well.
The alarm is located in the CPU (one of the boards). You could have an issue there.
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Old Sep 19, 2016 | 08:38 AM
  #42  
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unplug the top connector of the ECU, that'll kill the alarm...

...and the horn, and a few other things, but it's quick.

Can also ground the light green/black wire in the same plug to disable it.
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Old Sep 19, 2016 | 10:19 AM
  #43  
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From: tulsa,ok.
Originally Posted by jjwalker
unplug the top connector of the ECU, that'll kill the alarm...

...and the horn, and a few other things, but it's quick.

Can also ground the light green/black wire in the same plug to disable it.
I know you meant to say CPU.
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Old Sep 20, 2016 | 07:06 AM
  #44  
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From: Mesquite, TX-DFW
Originally Posted by satch
I know you meant to say CPU.
Yeah, haha.

Top plug of the CPU.
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Old Sep 20, 2016 | 01:13 PM
  #45  
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ok so i changed a faulty main fuse and the car started right up then died 30 seconds later. im not sure if the fuel pump is kicking on, at the relay it has power though. Also ive been reading that the fuel pressure regulator could be going bad if its flooding easily or if the plugs are black. Ive noticed the plugs getting some grit on them that smells like fuel. I just changed the oil and the plugs are new. How can i check the fuel pump or regulator?
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Old Sep 20, 2016 | 01:34 PM
  #46  
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Did you try jumpering the fuel check connector and try starting it again? Sounds like the fuel pump got shut off like a s4 with a bad MAF flapper
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Old Sep 20, 2016 | 01:50 PM
  #47  
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Originally Posted by lduley
Did you try jumpering the fuel check connector and try starting it again? Sounds like the fuel pump got shut off like a s4 with a bad MAF flapper

I have not. that connector is the yellowish green one isnt it, the 2 prong connector?
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Old Sep 20, 2016 | 01:55 PM
  #48  
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From: tulsa,ok.
Plain Yellow in a Black boot. Black wire and a Brown wire.
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Old Sep 20, 2016 | 01:59 PM
  #49  
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From: tulsa,ok.
A pressure gauge rented/borrowed from the auto parts store and placed in line would tell you of the fuel pressure. And if you by chance start the car again play w/the throttle pedal a bit to make sure it runs longer.
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Old Sep 20, 2016 | 02:16 PM
  #50  
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From: Ohio
Originally Posted by satch
A pressure gauge rented/borrowed from the auto parts store and placed in line would tell you of the fuel pressure. And if you by chance start the car again play w/the throttle pedal a bit to make sure it runs longer.

going out to jumper it now. when it started a little bit ago it would rev up but died.
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