Question about 1994 Pontiac Grand Am

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Car just stopped...no check engine light, no oil light, no warning at all it just stopped. i heard a squealing noise, but i didnt hear any lifter tapping or piston slap or any type of knocking, its buggin me out. the guy that sold me the car came to try and figure it out he said sumthin bout vapor lock and hydro lock but i neva heard of it... i spent 900 for it i need help bad

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If the motor is hydro locked then it has a coolant leak in the cylinder head or intake. The gm 3.1 and 3.4 are very well known for issue. If the batt is fully charged and the engine will not turn over that probably what it is. It can be a very costly repair so first check the oil if it looks like a milk shake or has white streaks in the oil then sorry but motor done and not worth fixing it.

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

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My Lincoln Continental 2000 Model oil light came on engine stopped after 25 feet. would not restart even though oil full. The car started the next day, but had a rattling sound at the top of the motor


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How to stop lifters from tapping for 1997 lincoln towncar?


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2004 Doge Ram 2500 5.7 Hemi 190K mile had oil pressure gauge drop to ZERO and check gauges light come on and engine shut down.. Check oil 1 guart low, add oil. let cool. crank up, good gauges drove home 45...


If the valve lifters are quiet you most likely have oil pressure even with gauge showing "0".Sounds like the oil pressure switch going bad.I would try that first.

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How do i stop my lifter in the motor from sticking...it makes my engine sound like it needs oil


I doubt if there is a lifter sticking. People who say that usually don't know what the noise is. Lifters in your car are operated by oil pressure from the oil pump in the engine. If you are low on oil you will hear lifter noise, probably from more than one lifter. If you are that low on oil, you have probably done some serious damage to your engine. In short, without tearing the engine down you can do nothing for a noisy lifter.

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TAPPING IN VALVES


ENGINE CLICKING NOISES
A clicking or tapping noise that gets louder when you rev the engine is probably "tappet" or upper valvetrain noise caused by one of several things: low oil pressure, excessive valve lash, or worn or damaged parts.
First, check the engine dipstick to see if the oil level is low. If low, add oil to bring it back up to the full mark. Is the engine still noisy? Check your oil pressure. A low gauge reading (or oil warning light) would indicate a serious internal engine problem that is preventing normal oil pressure from reaching the upper valvetrain components. The cause might be a worn or damaged oil pump, a clogged oil pump pickup screen or a plugged up oil filter. Using too thick a viscosity of motor oil during cold weather can also slow down the flow of oil to the upper valvetrain, causing noise and wear.
COLLAPSED LIFTER NOISE
Worn, leaky or dirty lifters can also cause valvetrain noise. If oil delivery is restricted to the lifters (plugged oil galley or low oil pressure), the lifters won't "pump up" to take up the normal slack in the valvetrain. A "collapsed" lifter will then allow excessive valve lash and noise.
VALVE LASH NOISE
If you can rule out lubrication-related problems as a cause, the next step would be to remove the valve cover(s) and check valve lash. On older import engines, mechanical lifters require periodic valve lash adjustments (typically every 30,000 miles). Too much space between the tips of the rocker arms and valve stems can make the valvetrain noisy -- and possibly cause accelerated wear of both parts.
To measure (and adjust) valve lash, you need a feeler gauge. The gauge is slid between the tip of the valve stem and rocker arm (or the cam follower or the cam itself on overhead cam engines) when the piston is at top dead center (valve fully closed). Refer to a manual for the specified lash and adjustment procedure. Also, note whether the lash spec is for a hot or cold engine (this makes a big difference!).
On engines with hydraulic lifters, oil pressure pumps up the lifters when the engine is running to maintain zero lash in the valvetrain. This results in quiet operation. So if the rocker arms are clattering, it tells you something is amiss (bad lifter or worn or damaged parts) or the rocker arms need adjusting.

Let me know if you have any other questions.  Thanks for rating my response and for using FixYa!

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1 Answer

Very noising


check idler pully and ac pump could be your noise as far as lifter tap i would have tto hear it try a good oil stabilizer like lucas oil treatment good luck

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