Question about GMC Jimmy

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Fix cracked radiator

My 2000 jimmy is leaking out its coolant within minutes by the time it starts drives a couple blocks its over heating really bad andvthe temp ahows hot really hot

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You have a leak, fill it with water and look for where the leak is coming from you may get lucky and find it is coming from a hose and hopefully not your radiator thats more expencive to replace and you will need professional help.

Posted on Jul 23, 2013

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Posted on Jan 02, 2017

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SOURCE: 2001 Jeep Grand Cherokee 4.7 Radiator Leak

After 20 minutes, your motor usually comes up to temperature, so that's when the thermostat will open, and start circulating coolant through the radiator. (before that it is just recirculating in the motor). It also takes that long to build up heat pressure, so a leak appearing from the radiator at that point does make sense.

Removing and replacing a radiator is a fairly simple disconnect, reconnect job.
But a new radiator can be somewhat expensive. Some are made from aluminum, some copper (being that yours is a 2001, it's probably aluminum).
So the first step would be pricing out a replacement.

To actually R&R it, let the engine cool, drain the coolant, and dispose of properly, disconnect the hoses, if it's an automatic transmission, disconnect the cooler lines, and plug them with small rubber plugs, and then locate and remove the radiator hold down (it can either be the top plate, or just a couple of simple clamps, usually on the top only. Then lift out and remove the old radiator (it just sets down in the bottom locator) installation is the opposite. Set it in, connect the lines, refill with fresh coolant.

I would not try repairing the old radiator on your own. It can almost be considered an art to clean and re-solder leaks on them. You would then also need a tank and a pressurizer to test it after.

However, you can take your radiator to a radiator shop, and have them repair it for you. Depending in the leak, this can save a substantial amount of money.

A job like this should take less then an hour if you have a new part in-hand, longer if you decide to take it in to be repaired.

Posted on Aug 31, 2008

  • 4 Answers

SOURCE: possible overheating, 2004 pontiac montana

Its definitly a bad reading, you would know if your vehicle is overheating, you can usually smell it right away.I would say its your temperature gauge sending unit is defective, check the wires to see if they are well connected or broken. ask a backyard mechanic for assistance.

Posted on Dec 23, 2008

  • 2920 Answers

SOURCE: coolant leaking on manifold, steaming.No hose or radiator leak.

i think its going to be the head gasket duto the way its leaking coolant. one of the water jackets maybe i would have it checked to be sure but it sounds like head gasket

Posted on Feb 03, 2009

  • 31 Answers

SOURCE: Overheating/No Heat 2001 Impala

change the thermostat and the temp gauge in the radiator

Posted on Mar 08, 2009

  • 102 Answers

SOURCE: coolant leak from left side of engine block running down oil pan.

when you say left side are we talking passanger side or drivers side if drivers side which is my guess most likely your waterpump seal is leaking

Posted on Mar 22, 2009

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WHY IS MY HINO 500 TRUCK OVER HEATING ALMOST TO THE RED ZONE AND THE COOLANT LEVEL IS ON THE MAXIMUM?


couple of reasons
have a compression test done to determine head gasket or cracked head
watch closely when the over heating starts and if it cools down
it the temp rises when going slow ( heavy traffic, hard pulling up hills , stop lights -- basically when the road speed is low and there is low/no air through the radiator-- check for a faulty fan clutch or viscous fan hub failure ( spins but doesn't pull air )
check for thermostat failure and not opening if from a cold start it is going to over heat within 5 miles of 10 minutes of idling
check for blocked radiator(internal)cores or radiator fins (external) falling off the cores
The first point of call for me would be the fan drive system

Mar 07, 2016 | Cars & Trucks

1 Answer

My Honda CRV 97 radiator does not have any leakage


check for coolant leak on and around the engine. it could be a water pump, frost plug, heater hose, head gasket. is there water in the oil if so this is an indication of a bad head gasket crack cylinder head or block.

Aug 26, 2014 | Cars & Trucks

3 Answers

Head gasket or something simpler? 98 cadillac overheats and the coolant is gone with no visible leaks


You bought a car with a failed head gasket or crack in the block
or cylinder heads,that is why it was gotten rid of

The A/C System probably failed years ago,not related

Jul 23, 2014 | Cadillac DeVille Cars & Trucks

1 Answer

My 2002 audi a4 3.0 quattro coolant gushed out then overheated


First off, the bad news:
DO NOT DRIVE it while you have coolant missing/leaking. If your engine over heats (and it sounds like it already did if it shut off) you could crack the engine block, which means you'll be in for a HUGE thousands of dollars repair).

Secondly, the optimistic news:
It sounds to me like all you have is a broken radiator hose, which is probably less than a $20 part. Start by checking all the hoses, find the one that's broken/cracked or leaking and replace it.

Thirdly the less optimistic news:
You could have a bad radiator. If you're radiator is leaking you need to replace the radiator. Probably a few hundred dollars for a new part.

If it's none of the above then it could be leaking from around the water pump, head gasket, or some other part.

Fill your radiator back up with water (when the engine is cold) and look for leaks. If you see nothing, start it back up for (no more than a minute or two) and look for the leak. Once you've found the leak, flush the cooling system and fill it back up with the proper coolant (not just any coolant, get the right coolant for your car at the auto parts store or dealership, just ask them what you need- they can look it up). Be sure to use the proper procedure for returning coolant to the system (you need to fill it up wait for the thermostat to open, then add more coolant- missing the last step could cause your engine to over heat again, and crack the block. Never add coolant/water to a HOT engine (or you could crack the block).

If you find the leak, replace everything that's leaking, replace all the coolant, and find that you're still slowly losing coolant mysteriously (no drips anywhere) then you did indeed crack the block.

Good luck James. Let us know how it goes.

Mar 26, 2014 | 2002 Audi A4

1 Answer

Should my thermostat be removed?


No It is there for a purpose and the problem that makes you consider the removal of the thermostat should be fixed . It is there to bring the coolant to correct operating temperature as quickly as possible and then to regulate the flow through the radiator to maintain a constant temperature. The easiest check for a thermostat problem is to start the engine cold and let idle for around 10 minutes Place your hand on the top radiator hose and if the thermostat is ok you will feel the hot water start to flow through the hose. If you have the radiator cap off you will feel the water heat up and you may see the water start to flow as well.. Over heating problems can come from blocked or partially blocked radiator cores, leaking head gaskets or cracked head, thermostat, old soft hoses, timing , air/fuel mixture, blocked exhaust, overload /over speed , wrong gear resulting in excessive rpm's, coolant fan not working, viscous fan hub not driving fan, loose fan belt, blocked fins of the radiator( plastic-grass-mud)

Dec 17, 2013 | 1999 Toyota Camry

1 Answer

My 2000 jetta is leaking coolant , it only does this when i turn it off after a 10-20 min drive(im guessing this leak is somewhere within the heating core, since i cant find where that water is going , all...


take it to an accredited radiator shop and have the system pressure tested ' could be a cracked plastic radiator tank leaking under pressure

May 06, 2017 | Cars & Trucks

2 Answers

My 99 alero v6 is over heating not leaking ight mite be hoses or thermostat . or head gasket but when it overb heats the smoke comes from the top of the engine


REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.IF CAR OVER HEATING WHILE IN MOTION.MORE LIKELY ITS THE THERMOSTAT,LOW COOLANT IN RADIATOR OR COOLANT SYSTEM,BAD WATER PUMP,WATER PUMP WEEP HOLE IS LEAKING, WATER PUMP NEEDS REPLACING.CHECK ENGINE OIL,IF OIL LOOKS LIKE MILK SHAKE YOU HAVE LEAKING HEAD GASKET.IF CAR IN PARK AND OVER HEATS WHILE IN A LONG TRAFFIC LINE OR.BANK DRIVE THROUGH COOLANT FAN NOT TURNING ON, BECAUSE THE ENGINE COOLANT TEMPERATURE SENSOR FAULTY.CODE SCAN CAR FOR FAULTY COOLANT FAN RELAY OR FAULTY PCM. CHECK COOLANT FAN FUSE, AND HOT WIRE THE COOLANT FAN TO MAKE SURE ITS WORKING.IF COOLANT FAN DONT WORK WHEN HOT WIRED. COOLANT FAN NEEDS REPLACING. REPLACE BOTH RADIATOR HOSES, REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.BUY NEW COOLANT ADD 50/50 WATER AND COOLANT.IF ENGINE OIL HAS ANTIFREEZE IN IT.REPLACE ENGINE OIL AND OIL FILTER TO KEEP FROM LOCKING UP THE ENGINE.GET CAR FIX.DONT KEEP DRIVING IF IT KEEP OVER HEATING,ENGINE DAMAGE WILL OCCUR.I HOPE INFORMATION I GAVE YOU WILL FIX PROBLEM.PROBLEM COULD BE LEAKING RADIATOR HOSES BUT CHANGE THERMOSTAT THATS FIRST THING I WOULD CHANGE BECAUSE IF IT CLOSED, ENGINE WILL OVER HEAT AND CRACK CYLINDER HEAD OR CRACK PISTON, COOLANT NEED TO CIRCULATE THROUGH THE ENGINE TO TAKE AWAY THE HEAT FROM ENGINE.

Apr 19, 2011 | 1999 Oldsmobile Alero

2 Answers

Was driving my 1999 chevy venture this morning after 12 miles had no heat & temp gauge pegged in the red. then went down & came right back up. Stopped & turned it off for 20 minutes or so. ...


You are describing a slow coolant leak and the resultant no heat and blockoverheating symptoms. The no heat is because there is insufficient coolant to cycle through the heater core, and the chuggin you describe is the engine indicating serious overheating.
With engine cold, you must add water--not anti-freeze--to the radiator itself, until it reaches the top of the radiator, then start the engine. If you do not have a radiator cap in addition to the overflow bottle (some vehicles don't), you must still add water to the radiator, even if you have to bypass the overflow bottle hose to do it. Add water until no more will go into the radiator. Start engine, let idle until operating temperature is reached. Thermostat should open and a good bit of the water will "sink" into the depth of the radiator. If you have no radiator cap, observe the temperature guage. When it reaches normal operating temp, when the thermostat opens, the temp will drop briefly at first, and you will notice warm air from the heater/defroster.
Once engine is warm and known to be full of water, seal radiator cap and/or system, and let idle for 30 minutes. Use this time to locate the "mystery leak." They can be very hard to find, and some won't leak until after the engine is turned off. During this idle period, observe the vehicle exhaust from the tailpipe as well as looking for actual water leaks: sometimes a bad head gasket can be diagnosed this way; if the exhaust is white and thick like steam, and smells like anit-freeze, you have a more serious problem. It is possible that after the repeated overheating cycles you have endured you may now have both a "mystery leak" and a blown head gasket.
Once leak is located, your next step is to let engine cool completely, drain the water, fix the leak, and then and only then add new antifreeze of the proper rating and ratio recommended by Chevy for your vehicle.
Anytime you drain a cooling system and refill it, it is necessary to check the overflow bottle at least 3 times in the first week after repair to ensure that you have the proper coolant level, and have not either missed another leak or not correctly repaired one. You MUST check it before you drive the vehicle the second time after the first repair attempt because it is normal to need to add more coolant than you added initially after the repair because of air trapped in the cooling system that will only be expelled after the first start/stop heating cycle. If after 1 week of daily normal driving you have only added a little more coolant once, and there are no more problems, you can be very comfortable that you have fixed your car.

Jan 16, 2011 | 1999 Chevrolet Venture

1 Answer

2000 Jimmy giving me some problems.


The reason you engine over heats is the engine cooling fan(s) are not coming on. They run by a coolant sensor and a fan relay.
You may also want to make sure you have the proper amount of coolant in your system.

Is your Jimmy a push button 4x4, or do you have to pull a lever to shift to 4x4 ?
Please let me know so I can help guide you through either of these repairs.
We aslo have the parts you need :
www.aescompaniesllc.com
click on the contact.

Feb 12, 2010 | 2000 GMC Jimmy

2 Answers

1998 ford expedition 4.6 engine without tow package...overheating


If you're running it without a thermostat it's clear there isn't enough/any coolant circulating through the block. When the motor is running are the hoses off the radiator soft and flexible or stiff. If they're soft there's no coolant flowing through them. Chances are the radiator core is bad or there is a crack in it somewhere. Have it removed and tested.

Sep 15, 2009 | 1998 Ford Expedition

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