97 rs camaro, vibrations when idling, followed by not running
Over 2 days my 1997 camaro rs (3.6L) started having a vibration issue. it was sort of missing too. this got increasingly worse until i could finnaly fell it and see it all over the car (this stopped or at least greatly lessened when i shifted to nuetral). as i accelerated it would cut out bad until higher rpms (4 or 5 thousand), wich at that point the problem almost vanished. on day 2 i got it home and when i went to start it again it would barely idle, and vibrated really rough, than it died. now it takes holding the key on for a sec or 2 before it fires up, than it idles randomly and horribly for a sec or 2 and dies. i do smell alittle gas, but than again i smelled a slight amount before this problem. the vibrating issue occured once or twice before this but it went away quickly. any direction you can point me would be greatly apreciated.
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Re: 97 rs camaro, vibrations when idling, followed by not...
I recommend checking out your plugs and wires. If you take out any of the spark plugs look at their condition and compare them to each other if there is one darker or wetter than the others that is the one that is misfiring causing the vibration and difficulty in starting.
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You have spend a lot of money on parts, have you invested in a Compression Tester or I believe you have Blown your Head Gasket, Cracked your Head. You are now getting Blow By and it is going into your System.
YOUR problem with your Raw Fuel getting into your Exhaust is due to the LAck of compression to Ignite the fuel.
It could also be a Bent or Swallowed Valve.
A Cylinder Leak Down Test will help you resolve this issue.
If it runs OK, and just won't idle the problem is probably your idle air control. Looking at the front of the motor it's just back and toward the the passenger side from where the air intake tube conects to the throttle body. Looks like a little round canister about 1 1/2 inches in diamater and 2 1/2 inches long with a plug in on the end. Usually held on by two small bolts, although some models thread into the side of the throttle body.
Check to make sure both headlights are tight,,,when it rattles at idle go feel the headlight and hold it and see if the noise and vibration goes away,sometimes the headlight has too much clearance and causes a massive vibration,,if thats not it try...loosening all the motor mounts and rock the car back and forth and them retighten them,it reseetles the mounts and sometimes fixes the issue,,also check the lower engine and trans mounts for wear.
Sounds like a good tune-up and add a cleaner to your gas to keep the injectors clean.It will also help you on fuel.Camaro's vibrate when they go through transitions between gears.You should feel a pull to your back when accelerating.As you stated,"Ride it out and it will "come back" For a while.."If you are talking once you get to top speed, ease off the throttle and the power will come back to you.Also, make sure you keep a fresh oil change.Camaro's are high performance vehicles, so they will burn oil quicker. Have a nice day James
1) It is very possible your engine mounts can be worn, but
2) the vibration you feel may be also due to the idle itself degrading to the point that the car is shaking. Does the engine sound like it is getting ready to die? what is the engine rpm when you feel the vibration? You may just have a dirty throttle body. In this case, clean the throttle body plate and bore and the problem will go away.
3) did the problem seem to come on suddenly or gradually, if gradually, you may just need some plugs and/or wires, and/or cap/ignition rotor, etc. (a tune up)
4) Also, do you only feel the vibration when the AC system is on?
5) there are some other reasons for abnormal engine vibration at idle, but the above are some of the most common, and simpler to repair.
Does the engine stall? if not the motor mount is the issue, it is allowing engine vibration to be sent along the frame to the driver, the mounts have 2 functions, the 1st is of course to hold the engine in place, the 2nd is to isolate the vibration from the driver, engines vibrate allot, but if all the mounts are good you seldom feel it.