Fuel/ignition problem?? (Full Version)

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Fuel/ignition problem??

  

svo86 -> Fuel/ignition problem?? (12/10/2007 1:06:52 PM)

I have an 86 svo, the past month it's been acting up. a few weeks ago I put 93 oct fuel in the car ( I usually run 89 oct low boost no problem) the car would spudder out and die. There would be a lag in power when i would try to get somewhere quick; almost like the car wanted to go, but couldnt. It would spudder and die at stop lights. Yesterday i put 93 oct in and ran for awhile, then it started doing the same ****. this time it was much worse. i would hold the pedal to the floor and it would barely make 2,000 rpms. Im guessing since 93 oct is $3.30 a gallon here in Orlando that no one buys it, and it just sits and collects water maybe. Are there any other problems it could be maybe with the car?

  
sleeper_inc -> RE: Fuel/ignition problem?? (12/10/2007 3:04:55 PM)

Have you turned your fuel switch to premium?

svo86 -> RE: Fuel/ignition problem?? (12/10/2007 8:17:55 PM)

no, I havent tried that; but before it would run fine with the switch on low boost with 93.

SPE926 -> RE: Fuel/ignition problem?? (12/10/2007 8:36:35 PM)

could be a number of things, the one that comes to mind is maybe a bad injector. When I did my la3 swap I used injectors that i had gotten from the junkyard and had a very similar problem.  Took off the injectors had them cleaned and flowed reinstalled and it started right up and ran fine.

svo86 -> RE: Fuel/ignition problem?? (12/11/2007 6:55:12 PM)

so i just changed the fuel filter, and ran it for about 2 hours. It ran much better. didnt stall out at all, however it idles like crap. The rpms surge from around 700 to 1,000. idk what they call it but every now n then the engine will fart. rpms will go to about 700 then back up again. its very consistant. im thinking it might be the tps sensor? 

TRBOPWR -> RE: Fuel/ignition problem?? (12/11/2007 7:58:57 PM)

That could be.  A bit of a surge isn't uncommon in these cars, both of mine have it at idle, but that seems pretty excessive.

svo86 -> RE: Fuel/ignition problem?? (12/13/2007 11:12:06 AM)

i tested the computer. i came up with code 67. the a/c was off, and the car was outta gear. i did the test with the engine off and on. and came up with the same code.

svo86 -> RE: Fuel/ignition problem?? (12/15/2007 9:19:32 AM)

alright so i figured out the code 67 was clutch/transmission related. AND my stalling problem was due to a original fuel pump that went bad,... i had 24 - 35 psi,  i now get 34 - 60 psi with no stalling ;)

sleeper_inc -> RE: Fuel/ignition problem?? (12/15/2007 7:38:18 PM)

You should have 39 PSI fuel pressure with the vaccum line off

Boost Gobbler -> RE: Fuel/ignition problem?? (1/10/2008 4:45:15 PM)

idle surge is most likely goign to be your idle air conntroler not your tps, id try puting on a spare idle air controler if you have an extra

  

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