LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

IT STARTED!!! (Does the happy dance)

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Old Apr 7, 2004 | 12:15 PM
  #16  
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Originally posted by scoobysnax83
I had a huge brain fart and I am embarrased of it.
Oh, lol, i've had my share of those haha.

Hey guys, any of you happen to have a vacuum hose diagram I can check out? Thanks for the help guys.
Old Apr 7, 2004 | 12:26 PM
  #17  
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Well, now that I think about it, I believe i do have a vacuum leak or something. Because Datamaster says my MAP is 100 when i turn the key and rpm's are 50, that is just with the car on, nothing run. As soon as I run it it immediately climbs to 4800rpm (And you have no idea how loud that is when its outside your house in your driveway with open headers at a constant 4800k rpm) and the map usually stays between 35-45. Now im just trying to figure this out really. Any ideas folks? Would the opti some how tell the computer to go that fast? I mean, it couldnt be a fault opti right? I just bought it and it seems to work.
Old Apr 7, 2004 | 12:27 PM
  #18  
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Originally posted by TransAm219
everything on the back of the intake pluged up ?
I'll check when I head home for lunch.
Old Apr 7, 2004 | 03:37 PM
  #19  
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Ok I went home for lunch and believe I spotted the problem. My goofball cousin when we were putting the fuel rails back on never put the passenger side rails on correctly, I have the two rear #6 & #8 fuel injectors outside of the damn housing their supposed to be in, he is getting smacked thats for sure. Would this cause this high idle? Ideas?

BTW: THe injectors are hovering over the injector cavities, which would probably explain why it could start. Also this would probably explain the 100 MAP reading in datamaster when the key was on.

Last edited by Pasky; Apr 7, 2004 at 03:51 PM.
Old Apr 7, 2004 | 04:32 PM
  #20  
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yes it would. It was sucking in air through the gaps
Old Apr 7, 2004 | 04:33 PM
  #21  
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Thanks, me and my best friend "The baseball bat" are gonna go pay a visit to my cousin :P.
Old Apr 7, 2004 | 07:02 PM
  #22  
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Ok, when I got home I fixed the fuel rails and badda boom badda bing, she purred like a kitten at 850-900 rpm constantly. It started at about 1600 rpm then slowly dropped down. Least I know that was my "High Idle" Problem . Thanks a bunch guys.
Old Apr 7, 2004 | 07:30 PM
  #23  
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Originally posted by Pasky
Ok I went home for lunch and believe I spotted the problem. My goofball cousin when we were putting the fuel rails back on never put the passenger side rails on correctly, I have the two rear #6 & #8 fuel injectors outside of the damn housing their supposed to be in, he is getting smacked thats for sure. Would this cause this high idle? Ideas?

BTW: THe injectors are hovering over the injector cavities, which would probably explain why it could start. Also this would probably explain the 100 MAP reading in datamaster when the key was on.
100 kpa is atmospheric pressure, and thats what the MAP should read when the engine is not running!
Old Apr 7, 2004 | 07:55 PM
  #24  
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Sounds to me like you need to calm your excitment and double check things before turning the key again.
Old Apr 7, 2004 | 08:01 PM
  #25  
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It wasn't so much that, its that my cousin usually helps out and I assumed he knew he what he was doing but that is obviously not the case, he isn't getting anywhere near my engine bay any more :P. Thanks for the help though .
Old Apr 7, 2004 | 08:19 PM
  #26  
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i've never had my TB apart but isn't there coolant lines that run into the throttle body? if so, and he does not have the radiator hooked up, it may be possible that is the origin of the air causing his high idle.
i'd say get EVERYTHING hooked up and then try starting it.

i was thinking about starting mine tomorrow w/o the radiator hooked up, but might think otherwise now

oh, my bad, i didn't read the 2nd page of this thread! sounds like he already solved the problem
Old Apr 7, 2004 | 08:27 PM
  #27  
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Nope, the injectors were definatley the cause, I fixed that and didnt touch the throttle body and it wasn't at a deafening 4800k. It idled smooth at 900.
Old Apr 7, 2004 | 08:33 PM
  #28  
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i bet it sounded cool though with that 5000rpm!
...probably not too good on the engine though, either way, glad you got it fixed!
Old Apr 8, 2004 | 03:35 AM
  #29  
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Originally posted by mkent
i've never had my TB apart but isn't there coolant lines that run into the throttle body? if so, and he does not have the radiator hooked up, it may be possible that is the origin of the air causing his high idle.
i'd say get EVERYTHING hooked up and then try starting it.

i was thinking about starting mine tomorrow w/o the radiator hooked up, but might think otherwise now

oh, my bad, i didn't read the 2nd page of this thread! sounds like he already solved the problem
I'd be really curious to know where the direct path between the intake manifold to the coolant system is? There should be no problem starting you car without the radiator on!
Old Apr 8, 2004 | 03:40 AM
  #30  
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Originally posted by SMOKNZ
I'd be really curious to know where the direct path between the intake manifold to the coolant system is? There should be no problem starting you car without the radiator on!
There isn't any problem starting it...

You just can't let it run for more than a few seconds...



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