C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

will an 85' run without maf?

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Old 10-01-2013, 09:17 PM
  #41  
Ghast
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Last edited by Ghast; 10-01-2013 at 09:19 PM.
Old 10-01-2013, 09:57 PM
  #42  
85corvettec4
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hes saying the counterclockwise direction of 0 on damper is atdc isnt that btdc?
Old 10-01-2013, 11:25 PM
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Here's a tip that will help you get the distributor dropped in pretty close to where you want it. Before bringing the engine to tdc stick the distributor all the way down in and engage the oil pump drive shaft. Now turn the engine so that your rotor points exactly where you want it to point when you set the distributor. Now you can pull the distributor up and with a dial indicator or your finger find tdc. Since the oil pump drive shaft is lined up what little play you have in it will allow you to drop the distributor in and engage the pump drive shaft with little trouble. Hope this helps. Just my .02
Old 10-02-2013, 12:33 AM
  #44  
Cliff Harris
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If you get the rotor pointed more or less toward #1 at TDC you can turn the engine over and the distributor will drop into place. Continue turning the engine until you're back at TDC and the rotor should be pointing at #1. If it isn't then you need to pull up the distributor and turn the rotor until it is pointing at #1.

Keep doing this (it should only take one or two tries) until the distributor has dropped into place, the engine is at TDC and the rotor is pointing at #1.
Old 10-02-2013, 12:38 AM
  #45  
85corvettec4
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alright ill try all this. in just confused as i had the rotor lined up and the engine at tdc of compression and the distributor seated. ill give it another whirl. thank you guys its awesome that you walked me through this.
Old 10-02-2013, 10:54 AM
  #46  
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Originally Posted by 85corvettec4
alright ill try all this. in just confused as i had the rotor lined up and the engine at tdc of compression and the distributor seated.
Dont feel bad, when it happened to me I spent two weeks trying to figure out why it wouldn't idle but would turn over.
Old 10-02-2013, 01:03 PM
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85corvettec4
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its just weird because it idles fine, no concerns with it at all. it just wont take any acceleration or run without the est
Old 10-02-2013, 01:43 PM
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So you are saying as you open throttle the flaps open and the motor dies from too much air.
I expect the throttle position sensor would then tell the ecm to put more gas into cylinder and it would accelerate. I think you should work on the check engine light and slap a maf on there. Also check vacume lines again especially the brake booster if that is left or cracked your car will be backfiring and sputtering.
Old 10-02-2013, 03:21 PM
  #49  
85corvettec4
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ya im running open TB right now. my coupler will be in the mail when i get home. when i was installing the brake line i bent it trying to ge tit to fit so it is kinked and may have ripped open a little bit
Old 10-02-2013, 03:21 PM
  #50  
85corvettec4
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the booster line is half hardline half hose
Old 10-02-2013, 04:24 PM
  #51  
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It will be hard to hear leaks with the noise created by the open throttle body. The car used a ton of vacume, when I went to pull the line off the cruise control bulb(thats what I call it) the hose wouldn't come off because the vacume was so strong and that was after 2 days of sitting!
Old 10-02-2013, 10:28 PM
  #52  
85corvettec4
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im throwing codes left and right. i hooked up the intake coupler and its fine now i can slam the gas and itll go. but theres soething wrong for sure



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