91Bird305
08-07-2002, 04:56 PM
Well I got my car running, looks like it was my coil...bad news I am getting a code 15 now. 15 Coolant sensor - low temperature fault
So what does that mean? Do I need to change out my Coolant temp sensor now on my manifold? God dang this car is full of surprises. After i burned all the soot off the plugs i checked my fuel pressure, i am running about 15psi for TBI vehicle which stock is 9-10psi. I uped it though but i don't think thats to bad. I wouldn't want to go any furthur. Anyways how much to CTS cost usually?
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1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
AIM: J007Golden
91Bird305
08-07-2002, 06:44 PM
Yup, it get rid of my code 15 and now all I have to do is lean my car out (plugs were black) and everything should be back to normal.
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1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
AIM: J007Golden
91Bird305
08-07-2002, 08:00 PM
Well i got it from 16psi to 14 psi, but it seems no matter how many times i turn the damn adjustable fuel pressure regulator it only decreases a little bit. Any thoughts on that? Anyways, we will see what this does.
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1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
AIM: J007Golden
Chris Ja
08-07-2002, 09:46 PM
With higher fuel pressure the injectors wear faster and sometimes engine will run rich. If injector seals are weak they will start to bleed. Just get it as close to factory specs as poss. You really don't need higher fuel pressure unless engine is leaning out on top end.
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87 IROC L98 700R4 A few mods. Best et 12.96 at 110 mph
All motor No NOS or Supercharger.
96 WS6 FORMULA Best et 13.5 at 105 mph
91Bird305
08-08-2002, 01:01 AM
I know and I want to lean it out, but with 1000 turns that thing only went down barely 2psi, something isn't right.
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1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
AIM: J007Golden
Chris Ja
08-08-2002, 01:32 AM
Then you have a bad pressure reg. You might want to take the reg off and check the spring to make sure it not binding. A reg is about $35.00. As long as it is close don't worry about it.
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87 IROC L98 700R4 A few mods. Best et 12.96 at 110 mph
All motor No NOS or Supercharger.
96 WS6 FORMULA Best et 13.5 at 105 mph
[This message has been edited by Chris Ja (edited August 08, 2002).]
91Bird305
08-08-2002, 01:36 AM
Ok, I will look into it.
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1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
AIM: J007Golden
[This message has been edited by 91Bird305 (edited August 08, 2002).]