HELP!!! 90/90 change gone awry??
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From: Paxs River, MD
HELP!!! 90/90 change gone awry?? I just changed my intake, t/b and the fuel rails, went with a F.A.S.T all the way. And now my car is running really, really chitty??? I didn't have a hard time with anything; it was easier then I thought it was going to be. Now my idle seems to be all over the place and the car is spitting and sputtering. Looks to be running rich, alot of white smoke way more then normal. Then my ARS light won't go out. All I can think of is that I have a loose wire somewhere so I'm going to check everything again in the morning. Any words of wisdom would be greatly appreciated. As always, thank you!!
Yep, did you change the valley tray bolts to the button head type that come with the FAST? if you didnt do that than thet bottom of the manifold may be cracked now.
Check for vacuum leaks as they are the primary cause for troubles.
Check for vacuum leaks as they are the primary cause for troubles.
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Yup sure did!!
Originally Posted by LS1Formulation
Did you change out all the button head bolts in the valley cover? What about reconnecting all your vacuum hoses and the brake booster hose?
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Originally Posted by LS1Formulation
Did you change out all the button head bolts in the valley cover? What about reconnecting all your vacuum hoses and the brake booster hose?
Pull an easy plug to reach and see how bad it looks (wet/black). I know the 90 install throws the tune off, but yours sounds really bad. Did you change injectors too? Also, try spraying some brake cleaner around the intake ports and throttle body to check for leaks. Is there a gap between the throttle body and the intake, there should be.
I am intersted in what you find, I am installing mine next week.
I am intersted in what you find, I am installing mine next week.
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From: Paxs River, MD
Originally Posted by vettenuts
Pull an easy plug to reach and see how bad it looks (wet/black). I know the 90 install throws the tune off, but yours sounds really bad. Did you change injectors too? Also, try spraying some brake cleaner around the intake ports and throttle body to check for leaks. Is there a gap between the throttle body and the intake, there should be.
I am intersted in what you find, I am installing mine next week.
I am intersted in what you find, I am installing mine next week.
thank-you barry
Oh there is a small gap between the t/b and intake on the under side?
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Originally Posted by shooter
there is a small gap between the t/b and intake on the under side?
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From: Paxs River, MD
Originally Posted by silent1
What manifold gaskets were used? The stock gaskets are a common problem since they don't "fit" or "fill" very well. Fast gaskets are thicker for this reason.
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From: Paxs River, MD
Originally Posted by vettenuts
There should be a gap, but it should be even. If you overtighten the TB, it will bend/break the ears of the manifold. Try spraying this area for a leak.
Originally Posted by vettenuts
Also, try spraying some brake cleaner around the intake ports and throttle body to check for leaks.
That trick does work, tho. If the idle changes, then you found the intake leak.
Anywya.. Not too familiar w/ the 90/90's but do they still retain the MAP sensor in the back? If it's running excesivley rich, you may have an intake port leaking and the 02's are picking up on the extra air in the system and compensating w/ more fuel, thru the computer.
just my $0.02.......
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From: Paxs River, MD
Originally Posted by bayer-z28
I've acutally accidnetally set a For Taurus on fire doing that. Just reassembled the engine, was checking for intake leaks and WOOOF! Soemhtign on the ignition must have sparked it... It didn't doo much dammage case there was a fire extinguisher about 10 feet from me.
That trick does work, tho. If the idle changes, then you found the intake leak.
Anywya.. Not too familiar w/ the 90/90's but do they still retain the MAP sensor in the back? If it's running excesivley rich, you may have an intake port leaking and the 02's are picking up on the extra air in the system and compensating w/ more fuel, thru the computer.
just my $0.02.......
That trick does work, tho. If the idle changes, then you found the intake leak.
Anywya.. Not too familiar w/ the 90/90's but do they still retain the MAP sensor in the back? If it's running excesivley rich, you may have an intake port leaking and the 02's are picking up on the extra air in the system and compensating w/ more fuel, thru the computer.
just my $0.02.......
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From: Paxs River, MD
Originally Posted by brad8266
If the MAP senor was unpluuged you would have a lean condition not a rich condition and your idle would be very high.
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From: Paxs River, MD
Originally Posted by 99blancoSS
no gaps on my 90/nw90