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4th Generation Camaros 1993-2002

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Old 12-08-2008, 06:53 AM   #1
devildogcollier
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PLEASE HELP@!!!!!!!!!!!!!!!!!!

ok....... ive got a 95 lt1 6-speed....

my cars [B]has been[B] running fine until about 4 days ago. i drove from my house to drop off my wife at work (only a 15-20) minuted drive there and back.
i noticed that when i started the car in the morning it made a kind of whistleing sound at first but went away quickly.(like air being sucked or pushed). on my way home i noticed that i was losing speed and overall power when i was going up hill. within a few minutes i was on my street to my house and had to stop at a sign. once i put it in first and gave it gas it rolled out like normal but once i hit 3k rpm goin from 2-3 gear the engine BOGGED down and i could not get above 1.5-2k rpm. i barely got home and could not push the car past 30 miles and hour.(and that was a struggle) i parrked the car and left it alone for the night... next day i did what i could to check the catylitic converter (seemed fine) put fuel injector cleaner through the car......still ran the same as before... problem

when the engine is (cold) the car can rev to over 4k with no problem!! this is what happens at opperating temp : when the car idles it makes a high pitched whistling sound. as you press the gas and the rpm goes up so does the noise (gets louder). i followed the intake hoses and vacum hoses and could not find any leaks..... HOWEVER... once i sprayed a little wd-40 around the manifold gasket, the noise stopped completely until the 40 was sucked through..... any OTHER IDEAS AS TO WHAT MY PROBLEM MIGHT BE??????

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Old 12-08-2008, 09:00 AM   #2
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where at on the manifold were you spraying?

sounds like you've got a vacuum leak. find out where its at and get it sealed up
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Old 12-08-2008, 09:06 AM   #3
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i was spraying under the injectors, by where the manifold meets the heads. under the number 5 and 7 injector
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Old 12-08-2008, 09:21 AM   #4
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check the bolts on the intake manifold, also check the seals on the injectors themselves.
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Old 12-08-2008, 09:28 AM   #5
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talking about where the injector inters the fuel rail......i checked em and they looked fine....havent checked the bolts yet though...i will later.....oh... question.... on the bottom of the injector where it inters the manifold.... i have small yellow "plastic rings" what purpose do they serve???? are they seals???
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Old 12-09-2008, 12:26 PM   #6
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I don't recall what the plastic rings are for, that's kinda' weird. Also, make sure the intake elbow in front of the throttle body is on square and checking it for any holes or leaks. I had one where the hose clamp actually pinched the hose, cut a hole into it, left a vacuum leak, and had to be replaced. I don't recall the syptoms were quite a match to yours but since it got better when you sprayed the WD40, I'd stick to where you're going with this.
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Old 12-09-2008, 12:28 PM   #7
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You know, aren't there a bunch of grommets and such in that area on that intake manifold too, like the PCV valve, and maybe another crankcase breather hose or something. Check to make sure they haven't fallen apart or leaking too while you have everything apart.
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Old 12-09-2008, 12:46 PM   #8
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yeah , theres quite a few hoses and such on the driver side of the manifold mostly,,,,also a lot of brackets and crap like that..just hope i can remember how to put everything back on......where they BELONG ...
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Old 12-13-2008, 09:09 PM   #9
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any updates?
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Old 12-13-2008, 09:30 PM   #10
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I know this is slightly necro'd, but I have to put in my $0.02 and offer that it's gotta be something with the emissions. If it's fine in closed loop but starts sucking air when it goes to open loop, I'm thinking something in the exhause recirc system is sticking to allow clean air into the engine without it being metered.
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Old 12-14-2008, 03:57 PM   #11
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have you check to make sure your gaskets are good?
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Old 12-14-2008, 04:36 PM   #12
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Quote:
Originally Posted by devildogcollier View Post
ok....... ive got a 95 lt1 6-speed....

my cars [B]has been[B] running fine until about 4 days ago. i drove from my house to drop off my wife at work (only a 15-20) minuted drive there and back.
i noticed that when i started the car in the morning it made a kind of whistleing sound at first but went away quickly.(like air being sucked or pushed). on my way home i noticed that i was losing speed and overall power when i was going up hill. within a few minutes i was on my street to my house and had to stop at a sign. once i put it in first and gave it gas it rolled out like normal but once i hit 3k rpm goin from 2-3 gear the engine BOGGED down and i could not get above 1.5-2k rpm. i barely got home and could not push the car past 30 miles and hour.(and that was a struggle) i parrked the car and left it alone for the night... next day i did what i could to check the catylitic converter (seemed fine) put fuel injector cleaner through the car......still ran the same as before... problem

when the engine is (cold) the car can rev to over 4k with no problem!! this is what happens at opperating temp : when the car idles it makes a high pitched whistling sound. as you press the gas and the rpm goes up so does the noise (gets louder). i followed the intake hoses and vacum hoses and could not find any leaks..... HOWEVER... once i sprayed a little wd-40 around the manifold gasket, the noise stopped completely until the 40 was sucked through..... any OTHER IDEAS AS TO WHAT MY PROBLEM MIGHT BE??????

Your diagnosis is clear, with a 90% probability.

Intake gasket(s) leaking.
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Old 12-14-2008, 05:15 PM   #13
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I know this is slightly necro'd, but I have to put in my $0.02 and offer that it's gotta be something with the emissions. If it's fine in closed loop but starts sucking air when it goes to open loop, I'm thinking something in the exhause recirc system is sticking to allow clean air into the engine without it being metered.
open loop = no readings from the o2s and other equipment
closed loop = readings from everything

however, the AIR system pumps air into the exhaust stream to help heat up the catalytic converter when the car is first started. the hiss that he heard when he first started the car would be that, but the AIR pump only runs for a very short time. but the EGR does not differentiate between open and closed loop. it is actuated by a solenoid from the computer to open the egr valve to allow more exhaust into the intake to decrease emissions.

however his problem is a leak on the intake manifold gasket/fuel injector o-ring. he and I have been pm'ing each other about this and he got new intake manifold gaskets but he never told me if he got new injector o-rings as well.
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Old 12-15-2008, 06:15 AM   #14
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update

ok.... well i got the new intake gaskets on there and used a little bit of copper spray for tack, made a GREAT bead of sealant around the block (ESP. around the oil valve) changed the o-rings on the fuel injectors....and guess what !!!!!


CAR STILL RUNS LIKE CRAP!!!!!! i dont know what to do, im gonna have to break down and get it towed somewhere. sound seems to be comming from ONLY the valve cover or the headers on drivers side of engine i cant pinpoint it .... still not sure ..... thanks for yalls help !!!!!!!

car is starting to depress me ..


semper fi

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Old 12-15-2008, 12:39 PM   #15
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CAMARO SPIKE where ya at bro ?????
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Old 12-15-2008, 02:40 PM   #16
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DDC---- Let me tell you what just happend this past weekend-- My wife calls me on my cell and begins to tell me how bad the Jeep Wrangler ( 2003 ) is running-- I asked -- What's it doing-- She tells me that it won't go over 30 mph and it felt like it was stuck in 2nd gear--My frist thought was tranny trouble then maybe it was the Catylitic Converter-- Anyway I told her to bring the Jeep back to the house and I would take a look at it-- ( by the way -all this time I'm in the garage under the 69' camaro finishing bolting the trans into the block )-- She gets home and begins to tell me the same story as before then she mentioned that she had just left the service station and THEN the problems started--- I thought maybe it was BAD GAS---- Then I remember a time when my LS2 Saturn did the same thing-- I had just filled my tank with fuel and took off down the road when the car did the same thing-- NOW 8 years later the Jeep was doing it -- I asked her to take the gas cap off and replace it by turning it only one click instead of clicking it 5 or6 times to make sure it was locked-- I then told her to drive the Jeep-- She called me back and could'nt belive that I had fix it by just taking the cap off and puting it back on-- SHE LOVES ME--- Moral of this story-- Vaccum on Fuel Pressure Sensor will create these symptoms-- Hope this helps you -- AJM
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Old 12-15-2008, 07:33 PM   #17
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Quote:
Originally Posted by devildogcollier View Post
CAMARO SPIKE where ya at bro ?????
sorry man, been busy at work.

are you getting an SES light at all?

you might have a blown exhaust gasket causing an air leak getting into the exhaust stream which is jacking your o2 readings making the computer run rich as crap flooding your motor out when you get above 3k. you need to find where the leak is coming from.
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Read that link that Spike posted, it'll tell you everything you need to know.
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Nobody makes CamaroSpike happy. You just disgust him a little less than other people.
"You can think I'm wrong, but that's no reason to quit thinking.”
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But not all people were born awesome like you, Spike.
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Old 12-16-2008, 06:38 AM   #18
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NEVER THOUGHT OF TRYING THAT !!!!!!!!!!
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Old 12-16-2008, 11:07 PM   #19
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Dang - out of ALL the trouble I've had out of my LT1 car...i never had this one! wierd stuff.
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Old 12-18-2008, 06:28 AM   #20
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check this out......................

well i had my master mechanic take a look at it and this is the "problem"......

BAD OIL PUMP, SHATTERED MAIN BEARINGS, SCREWED UP CAMSHAFT, BLOWN HEAD GASKET......IVE HAD THE DAMN CAR FOR ALL OF 3 WEEKS !!!!!!!!!!!!!!! NOW i have to either replace the engine or rebuild it.......
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Old 12-18-2008, 06:42 PM   #21
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Quote:
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check this out......................

well i had my master mechanic take a look at it and this is the "problem"......

BAD OIL PUMP, SHATTERED MAIN BEARINGS, SCREWED UP CAMSHAFT, BLOWN HEAD GASKET......IVE HAD THE DAMN CAR FOR ALL OF 3 WEEKS !!!!!!!!!!!!!!! NOW i have to either replace the engine or rebuild it.......
...... the car still runs tho? that seems like a lil to me.

if you shattered the main bearings, or had blown your oil pump, the motor would seize up on you.
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Read that link that Spike posted, it'll tell you everything you need to know.
Quote:
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Post count is truly an accurate measure of how cool someone is on the Internet.
Quote:
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I piss excellence
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Quote:
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Nobody makes CamaroSpike happy. You just disgust him a little less than other people.
"You can think I'm wrong, but that's no reason to quit thinking.”
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Old 12-18-2008, 07:46 PM   #22
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...... the car still runs tho? that seems like a lil to me.

if you shattered the main bearings, or had blown your oil pump, the motor would seize up on you.
It does smell like fish don't it.

The diagnosis don't fit the symptoms.
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Old 12-22-2008, 06:25 AM   #23
devildogcollier
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my mech told me that the oil pump went bad and that caused all the other problems i got....i dont know "exactly" how bad the situation really is cause im not a mech...... any advice??????????
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Old 12-22-2008, 08:50 AM   #24
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if your pump went bad, and all that other stuff happened, your car wouldnt be running as it would have seized up.

LT1's can run with as little as 6psi for oil at idle.
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Quote:
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Read that link that Spike posted, it'll tell you everything you need to know.
Quote:
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Quote:
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I piss excellence
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Quote:
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Nobody makes CamaroSpike happy. You just disgust him a little less than other people.
"You can think I'm wrong, but that's no reason to quit thinking.”
Quote:
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But not all people were born awesome like you, Spike.
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Old 12-22-2008, 09:02 AM   #25
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well what further action do yall suggest ?????????????????????
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