Hi, I have a 2002 s10 pickup I just purchased as a fixer up. I just started hearing a low end knock under very light load or revving the engine from idle to about 1500 rpm. I cannot hear it driving down the road and it almost seems intermittent. I can hear it in gear or out or with the clutch depressed. Any ideas/known issues with these engines?
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you wont see anything from there --lower knock usually called rod knock caused by a bad bearing or wrist pin [piston pin]to inspect the lower end is by the oil pan you can inspect the crank and rods from there
Hi just food for thought,the nocking would normaly mean the big ends where worn,but as you have sied that the oil pressure is low it could well be that the oil-pump is worn or filter of oil pickup is blocked.
hope this was helpfull.
If your trans is leaking between the motor and trans it can only be two things the front seal witch is behind the converter or the gasket on the trans pump and that is highly unlikely probly the front seal
sounds like a bad rod bearing. if auto trans put in drive hold brake firmly with left foot gently push on gas pedal with right foot if knocking increases with engine rpms bad rod bearing time for engine rebuild
The best way to diagnose the noise is to hear it. Without hearing it all anyone can do is guess.
Is it a low dull thud? Goes up as the RPM go up? sound like its low in the motor?
That could be the lower end of the motor going out (worn bearings/rod knock).
Make sure you have oil in it.
most of these models have 2 oil lights.The red one is oil pressure,if flashing or on when engine is running,it is usually serious.check oil level,but usually caused by blocked pickup screen(a common toyota fault) when services aren't done.The orange oil light is tripped by an oil level sensor on the side of the sump when the oil level is low.If the oil level is ok,note this is a common fault especially if oil changes have been missed,and/or a petrol engine oil used and sludge builds up,sometimes using an additive for flushing prior to oil change can help,but may not work on 1st oil change.
Damage has been done to the engine, the noise you hear are the piston rod bearing ( knocking lower part of engine ) you can try putting in a crank kit and have the piston rods mechin but will not last very long, will start to knock again, best bet to replace engine,good luck.
no should be same engine. check your engine mounts and tranny mount. how bad a vibration? sometimes after installing engine the trans gets shifted around and if mount was worn it will allow it to hit crossmeber and vibrate.
The MAP sensor and Knock Sensor are both very easily replaced. A better scanner will tell you which sensor is going bad on your transmission. An Autozone code reader will not tell you which sensor on the trans. is acting up. Most sensors on your trans. are very easity replaced as well. They just screw in and plug it. It's worth paying to get a "real" scan done. The trans. sensors are inexpensive and you can replace any other your listed sensors yourself.