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Ford 5000 engine knock at high revs - Cars & Trucks

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  • Cars & Trucks Master
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Sounds like its had its day ,could be mains or ends ,possibly even piston slap caused by broken top rings

Posted on Nov 29, 2012

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: engine revs on ford focus

hi there, can you tell me the engine size. it sounds like you have a problem with the idle speed adjuster. you can try and remove it for cleaning. they tend to carbon up inside and stick, which causes the idle problems. however if your car is a diesel then this fix does not apply. cheers. dave

Posted on Nov 13, 2008

  • 70 Answers

SOURCE: the engine knocks at higher rpm, only at high rpms

First no matter what check the oil level and then if it's a high rev tapping you need to allow the oil to flow through the engine block to try to coat and settle your valves.

But if it's really " knocking " sounds like your lifters and rocker arms are allowing your piston rods to clatter and that needs to be looked into fast.

Posted on Jul 27, 2009

headstrong56
  • 493 Answers

SOURCE: whats the cause of high revs after cleanin the engine when starting it

you obviously have gotten water in somewhere not meant to get wet. if it hasn't fried anything it should settle down as it dries out.

Posted on Jul 14, 2012

emissionwiz
  • 75005 Answers

SOURCE: RPMs around 5000, reluctant hard shifting

The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.




Posted on Oct 04, 2012

little_shaws
  • 493 Answers

SOURCE: My 2000 Ford 1.6 lt. Laser Automatic; at around 60 km/h speed, suddenly Gear changes back to a very low gear (engine rev goes up to 4000-5000 rpm) and goes back to normal in few seconds. runs normal a

TPS (Throttle posision sensor) would be my guess

Posted on Oct 23, 2012

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you fail to menyion what kind of car and which engine. I can only guess that this is what is known as spark knock which can be caused by several things, most common would be low octane fuel. another more critical cause could be improper timing.

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I would definitely have your Idle Air Control valve checked/replace....I've had them stick at around 3000 rpms, even while driving, and couldn't stop the car without turning off the ignition first....

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Ac works but when compressor cycles, it wont come back on until i rev engine to 4500 to 5000 rpm's and compressor kicks back on until it cycles again. i have to repeat reving engine every time com


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1 Answer

Whats the cause of high revs after cleanin the engine when starting it


you obviously have gotten water in somewhere not meant to get wet. if it hasn't fried anything it should settle down as it dries out.

Jul 14, 2012 | Cars & Trucks

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My grang cherokee2002 us spec, while driving trnz changes fine but when cick down or full excelrate and RPM reaches 4.5 or 5 engine is loosing power and getting noisy and RPM not going more, while gear on...


You are hitting the rev limiter top range, which cuts off your ignition.

I have a 2001 Grand Cherokee and the problem drives me crazy, but it is the way the car is designed- as soon as you hit the rev limit, it shuts down ignition and your jeep will "buck" - a real pain when you are trying to accelerate into traffic!

You have the 4.0L straight six engine, yes?

If so, please take my advice and learn to live with the minor annoyance of the rev limiter- that engine is IMHO the best Chrysler ever made (nearly "bulletproof"!) and it was so reliable you cannot even get it in a jeep now! For decades, that engine was used in welders, tractors, generators...and yes, jeeps... and it is a favorite among mechanics for its durability!

Feb 01, 2011 | 2002 Jeep Grand Cherokee

1 Answer

The engine knocks at higher rpm, only at high rpms


First no matter what check the oil level and then if it's a high rev tapping you need to allow the oil to flow through the engine block to try to coat and settle your valves.

But if it's really " knocking " sounds like your lifters and rocker arms are allowing your piston rods to clatter and that needs to be looked into fast.

Jul 27, 2009 | 1992 Dodge Dakota

1 Answer

I have a knocking sound in the engine when I first start it up that goes away after a few minutes. 1998 Ford Windstar with about 116,000.


Is it a low down in the engine toc, toc, toc or a lighter tic, tic , tic sound?
The lower one is quite often the main bearings, rather than pulling the engine to fix it run 10W30 oil in it instead of 5W30 and treat the old lady with respect and don't rev or drive her till the knocking stops. It stops because the oil pressure has build up. If it is the lighter ticking this is the hydraulic lifters, don't worry about it, just do the same. Make sure you don't go longer than about 4000 miles between oil changes. I put Synthetic blend in all my cars and run 5000 miles between changes.
Hope this helps.
Sam

May 12, 2009 | 1998 Ford Windstar

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