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Installing Fast 90..Need help

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Old Oct 18, 2010 | 10:43 PM
  #21  
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So whats the process with the voltmeter?
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Old Oct 18, 2010 | 11:00 PM
  #22  
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Originally Posted by powerjunky
Well thanks man!

Any idea as to why a bunch of ppl put the sensor on the front?
Yes, the map sensor usually doesnt fit back there because it hits the firewall. LPE makes a nice relocation kit up front right behind the TB up top.

Hopefully the intake is not warped like some 90s are. You'll prob need a re-tune after install to see the proper gains.

Last edited by Ikester; Oct 18, 2010 at 11:09 PM.
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Old Oct 18, 2010 | 11:24 PM
  #23  
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My touches but it did fit actually . How do I check the harness with my volt meter?

Can just the harness cause all those codes?
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Old Oct 18, 2010 | 11:37 PM
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Power Junky I know you are already past this point but I wanted to appologize for giving you some bogus numbers. I went to the local Chevy dealer today to get the Front only coolant line and back plugs with the numbers that were in the FAST directions. The parts are obsolete or not being made anymore. I called FAST to ask them what the deal was and they didn't realize the numbers were no good anymore. They gave me the following new numbers. GM #12602544 Front only coolant vent line. GM #12602540 Plugs for the back coolant vent openings.
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Old Oct 18, 2010 | 11:55 PM
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Did you not relocate your MAP sensor? The Casper harness number was for the MAP sensor to be relocated. If your sensor is touching it may not be sealing properly.
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Old Oct 18, 2010 | 11:59 PM
  #26  
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Thanks for the update Bucketlist! I taped them down and it worked fine, but all these codes, Im trying to figure out what theyre being caused by


Fuel level sensor I think is another problem Im having where my fuel will just drop to empty.

But with that aside all these throttle related codes are becuase of the harness?
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Old Oct 19, 2010 | 12:11 AM
  #27  
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you mean the Thing that you can put in the back correct?

I cant imagine that thing creating all this lol

Misfiring I think is a Cracked plug... But everything with the harness plugged up fine. I dont see how its "new" location could make this much of a difference, my car sound cammed out lol big time lol
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Old Oct 19, 2010 | 12:43 AM
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I was told by a couple different places to relocate the MAP sensor to the front. The fuel level thing is a known problem. Mine was doing the same thing when I first got it. Some people recomended using Seafoam in the gas to solve the problem. I didn't. I have been using Premium Gas with STP Octane booster and haven't had any more problems with it.
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Old Oct 19, 2010 | 01:14 AM
  #29  
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Ill check the MAP sensor tomorrow, but What about the Throttle codes?
obviously Ill check the harness it self to see if its plugged in correctly, but Lucky was talking about checking it with a voltmeter?
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Old Oct 19, 2010 | 05:40 AM
  #30  
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Need better photos. How did you reconnect the PCV system? Where does the hose near the TB go, what does it attach to? Which TB are you running, LS2?
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Old Oct 19, 2010 | 11:33 AM
  #31  
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Ill Grab some more photo's for you guys, as for the Pcv system its the same, only thing different is that line near the TB isnt hooked up right now, only because I wanted to make sure I could at least get the car started lol
Ill get a fitting and I guess route it into my intake piping?

And yes the TB is an Ls2 TB
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Old Oct 19, 2010 | 11:41 AM
  #32  
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Ok so far I gathered that I guess that MAP sensor isnt as good as I thought lol looked at the LPE kit $66??? Really? Screw that Ill go to Home Depot and do my own way lol

And Im trying to figure out how I will connect the air tube beside the TB, Im starting to think ithe Pcv system is loosing pressure because its disconnected.

Last edited by TriplBlk; Oct 19, 2010 at 01:13 PM.
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Old Oct 19, 2010 | 01:30 PM
  #33  
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[QUOTE=powerjunky;1575666427]Screw that Ill go to Home Depot and do my own way lol

QUOTE]

Right, just look how "your own way" has worked up to this point.....
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Old Oct 19, 2010 | 01:51 PM
  #34  
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Dammit man, you made a good point lol

ok you got me haha

but I cant justify spending almost 70 on simple materials
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Old Oct 19, 2010 | 03:32 PM
  #35  
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It's good you have a sense of humor. I strongly suggest you do more research or have other experienced (with LS1s) friends help you install stuff. Leaving that vacuum line disconnected is probably why the car idles bad and is throwing the MAF error (1514). That code is set when metered airflow and "actual" airflow (calculated) don't match.

This is the first time I've ever heard of someone flattening those coolant lines. It sounds like redneck engineering to me.
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Old Oct 19, 2010 | 04:24 PM
  #36  
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To pass time Im actually search all threads about fast intakes (surprisingly not many)
I may see what ls1tech has over there.

I saw in a Thread how a member routed that Vac line to his catch can than into the intake manifold. I've been wanting this anyway so maybe its time for me to just do this as well...

As for "tapping" down the lines, its very subtle and takes no time, saves buying 01-04 lines. The "DIY thread" There's a a write up of a FAST install and he actually tapped the lines from what I was told lol, Im guessing its pretty common lol
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Old Oct 19, 2010 | 11:48 PM
  #37  
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Ok took the one picture I felt was necessary cause its basically my one problem...




My one solution is a Catch can as Ive wanted one anyway

Any feedback on Catch can and Installs of them with a FAST is even better!!
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Old Oct 20, 2010 | 12:01 AM
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Here is my fix for the hose. Over 1500 miles and no problem.

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Old Oct 20, 2010 | 12:07 AM
  #39  
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I can kinda see it, but all you did was put a breather filter on???

Well then damn, how can my car idle so roughly if all you have is a breather? Looks like something else could be wrong.

Ive checked all 3 plugs on my Casper harness,all pins, and it looks good

Im starting to wonder Im my TB isnt sealed up enough and is leaking air in,too much at that

Last edited by TriplBlk; Oct 20, 2010 at 12:09 AM.
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Old Oct 20, 2010 | 12:08 AM
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PM sent with number.
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