Question about 2001 Lexus LS 430

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On my 2001 LS430, I have a small coolant leak from the engine just rear of the alternator, passengerside. I thought it was a freeze plug, but this looks like a cap that is held on by two small bolts. You can see either an O ring or gasket under the cap. That has dry rotted and there is a little bit of coolant leaking.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Engine oil leak

check the valve covers

Posted on Dec 31, 2008

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  • 236 Answers

SOURCE: My 2001 Lexus LS430 was misfiring, riding rough,VSC light is on

go to auto zone, advanced autoparts, or a certified mechanic and ask if they can reset the codes, it should be free

Posted on Jun 17, 2009

MNfisherman
  • 11896 Answers

SOURCE: REPLACE HEADLAMP BULB 2001 LEXUS LS430

There is a clip that pries up with small flathead screwdriver. The harness and bulb are held in lens with a plastic ring that screws on and off.

Posted on Sep 15, 2009

Testimonial: "good info "

  • 369 Answers

SOURCE: I replaced valve cover gaskets and camshaft seal

crankshaft seal rear main seal oil pressure sending unit to name a few you really have to look closely to locate your leak.

Posted on Dec 01, 2009

Mustgo
  • 2359 Answers

SOURCE: I have an 03 Lexus LS430 with 64K miles. Trans is

The weakest link is on the transmission pan gasket.

You have to buy the transmission service kit.

The kit has the pan gasket and the transmission filter.

My cost is only $38........dealer is a lot more.

Use Amsoil Synthetic ATF if possible. It will help increase the service life of the transmission



Posted on Dec 10, 2009

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2 Answers

I have antifreeze coolant leaking from the rear of my engine and want to gain excess to my rear freeze plugs. Do I pull my transmission to change the rear freeze plugs on the 1989 crown Victoria?


Yes, you have to pull the transmission. But look it over closely. Most likely the coolant is coming from somewhere else. I have never seen or replaced a bad freeze plug back there. Water can't get to them to rust them out from the outside in. Only if you use water only to cool the engine. Heater hoses and the intake manifold gaskets can cause a leak in this area.

Apr 25, 2015 | 1989 Ford Crown Victoria

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Where are the freeze pluges for the trany coolent??


There are none. The Transmission does not use water to cool it.

Apr 03, 2015 | 2002 Mercury Mountaineer

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I have a coolant leak on a 2001 Malibu with a 3.1 engine that is leaking behind water pump. It is not the pump as I have replaced it. New radiator replaced the old one which was leaking. I have checked all...


If it was a freeze plug, it would keep leaking with the engine off. You are going to have to move stuff around, is there a hose outlet down there? Some GM engines had a plastic fitting screwed into the block for a bypass hose fitting. I found one that had broken off flush with the block.
It might help if you register for free at autozone.com. You can list your vehicle information, then look for anything to do with the coolant system. A Haynes manual would almost certainly have a good description. + Good luck.

Feb 25, 2014 | 2001 Chevrolet Malibu

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Coolant leaking at the top, rear of engine on a 1998 Lincoln Towncar


If you are in the cold freeze region then it can be FREEZE PLUGS or head gasket,

Freeze plugs prevent the coolant from cracking the block.

The only fix is to replace the freeze plugs.

Jan 13, 2014 | 1998 Lincoln Town Car

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Where are the freeze plugs located on a 2001 Dodge Intrepid 2.7


There are several freeze plugs but should only be 2 where the transmission and engine bolt up together. You will have to remove the transmission (transaxle) to replace them. To make 100% sure those are the only thing leaking coolant you may want to invest in a coolant pressure pump tool. They really aren't all tht expensive and will pump the coolant system up to normal operating pressures without having to crank the engine and getting it hot. After you pump the tool up just get a light and look for leaks. Also when it comes to freeze plugs. There is kinda of a unwritten rule (change one, change them all). Because freeze plugs are very inexpensive, but the labor is gonna be high usually. And while a technician is already removing this an that to change one. It will save you on labor in the long run. I promise. Because something caused that one to leak probably won't be long before the others start leaking as well. And you'd have to start over. Hope this helps.

Nov 28, 2012 | 2001 Dodge Intrepid

1 Answer

Water leaking behind moter and i cant see were its coming from


If you have antifreeze leaking from what appears to be coming from the transmission bell housing, the leak is most likely (although possible) not at the rear of the engine.

There COULD be a freeze plug at the back side of the engine between the engine and transmission leaking. However, on the 4.6L engines, it is most commonly caused by either a water pump, heater hose, or intake manifold leaking at the FRONT of the engine.

Leaks in these areas will fill the area between the cylinder heads with coolant, which will run to the back of the engine and out the hole in the cylinder block that is located just above the transmission bell housing. This makes it LOOK like the leak is in the rear.

To verify this condition use a flashlight to look under the intake manifold just past the alternator. Sometimes it is also very helpful to remove the serpentine belt and remove the alternator (very easy to do) to verify that this is the problem.

Take a hard look at the coolant cross-over pipe on the front of the intake manifold assembly. These are notorious for leaking on both sides and VERY LIKELY to be leaking on the driver's side where the thermostat is located.

This problem is so common that an aftermarket company named DORMAN has come up with an aftermarket replacement intake manifold to correct the problem. The DORMAN part number for your vehicle is Part Number: 615-175 It is available at many aftermarket parts suppliers including AutoZone, O'Reilly's, and Advance, for around $230 (USD). (See picture below)


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Nov 24, 2011 | 2001 Mercury Grand Marquis

1 Answer

Hav an alero that leaks coolant as i pour it in. thought it was a freeze plug,but it seems to be a gasket at the bottom rear on a water pipe.cant get a good look


Yo have a number of coolant lines back there, I'm not sure about the fitting, sometimes an O-ring, sometimes a gasket, but it is a nightmare to get to. Hope this helps.

Mar 03, 2010 | 2001 Oldsmobile Alero

2 Answers

COOLANT LEAK


On the back side of your motor... On top there is a aluminum coolant hose that has a nylon fitting in it. Make sure it isnt weaping. It will run down the back of your block. The other thing it may be is a frost plug behind your transmission bell housing. This would require pulling the transmission to replace the plug, Check the hose first. Good luck

Oct 28, 2009 | 2001 Chevrolet Silverado 1500

2 Answers

My 2001 ford taurus is leaking coolant on the firewall side of the engine. is there a coolant hose on that side that could be leaking?


It could be a hose on top of the engine leaking back there. It could also be a freeze plug on the back of the engine. Its a round disk about 2-3" in diameter and is recessed about 3/8" into the block. Check those out and make sure all hoses are good and tight. Any hoses that are kind of puffed out above the clamp should be replaced

Sep 30, 2009 | 2001 Ford Taurus

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