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Discussion Starter · #1 ·
My 89 Bronc was runnin fine, just a little loud (what'd you say???). I narrowed it down to the upper intake gasket and replaced it and I'm almost positive I put all the vaccuum hoses in the right place.
Now when I start her up she runs so quiet :hump . . . for about two minutes (or to the stop sign at the end of the block, which ever comes first), and then dies :shrug .
I haven't checked the codes yet cuz everything was working fine before. I'm wondering if anybody has encountered similar problems and could maybe offer a little insight into what went wrong or what I forgot.
Thanks,
Matt
 

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Discussion Starter · #4 ·
OK, so i checked codes today and came up with 67 (neutral pressure switch open). Now to my knowledge this shouldn't cause the engine to stall. It has been causeing me to start the engine by jumping the solenoid to the positive battery terminal, but thats a whole other can of worms.

Unlike most similar problems I've seen posted, the engine starts right back up after it stalls. If I step on the the accelerator it'll keep running and then die once I let off after a few spikes. Should I check the resistance on the sensors even though I got no codes relating to them? If so which ones are most likely the culprit?

Thanks for the help and support guys.
 

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Discussion Starter · #7 ·


I've been playing with my vaccuum lines and have discovered that when I pull the line going to the vaccuum tree on the top of my intake everything runs fine. When I put it back in it dies. The other hose in this port runs to the back of the engine and I cant see where its going. The third port has a little a little nipple capping it off and there is always oil in it when I pull it off.

I hope I uploaded the pic correctly, if so this port is mounted to the firewall right behind the intake. Any insight in the matter would be greatly appreciated, and Merry Christmas y'all :santa .
 

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Discussion Starter · #9 ·
The tranny is an automatic C6. If the fluid in the lines isn't oil its transmission fluid. I couldn't make out the diagrams on your link so I'll be checking for a map under the hood first thing in the morning.
Thanks for the help.
 
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