Question about 1999 Saturn SL

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1997 CHEVY EXPRESS CONVERSION VAN 5.7 ENGINE MARK III VAN OVERHEATED AND THEN I HEARD A KNOCK IN THE ENGINE. I GOT THE VAN HOME THE RADIATOR WATER WAS RED IN COLOR. AFTER IT COOLED DOWN I CHANGED THE WATER AND IT DIDNT OVERHEAT NO MORE BUT NOW I HAVE A KNOCK IN MY ENGINE ,,,,,,, HELP ( CHANGED THE KNOCK SENSOR LAST NITE)

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  • 44 Answers

Sound like a blown head gasket. Changing the knock sensor will not remove a knock. It's a sensor.

Posted on Nov 30, 2017

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6ya staff

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Posted on Jan 02, 2017

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Anonymous

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SOURCE: 91 SL1 problem

the sensor is located at the rear side of cylinder head between transmission and engine under the thermostat hosing but make sure to have some one aply direct power to fan to se if fan still goos if not replace it, and the sensor all what you have to do to test it start the car unplug the sensor and if the fan come on then replace the sensor i will recomend to replace thermostat also and make sure is full of coolant

Posted on May 31, 2008

Anonymous

  • 2 Answers

SOURCE: car overheats. have replaced radiator,thermostat.water

Question that I pose is:
Is the car overheating or are you assuming it is as the gauge is telling you that it is?
There are two cheap and simple things that are not mentioned in this post. There is an Engine coolant temp sensor which in all of their innane wisdom Saturn built with a plastic tip and we all know plastic melts fairly easily. This part is a simple fix as it needs a 13mm deep socket and that is it for tools to replace it and it is $10 - $15 for a new on with a copper tip. There is also an Engine coolant temp switch which sends information to the PCM to tell the gauge what the reading should be. Aslo $10 - $15 and a 13MM deep socket to replace. These are common issues with the S Series Saturns. I do however recomend that if you are going to replace them yourself that you empty the radiator of coolant as the sensor and switch are directly in the engine block coolant flow and will give you a nice little shower if you do not at least jack the drivers side up before replacing them.

Posted on Dec 02, 2008

Anonymous

  • 4 Answers

SOURCE: overheating engine

Check your freon level on your AC system. If unit is low, it can actually put out more heat in front of the radiator. Does it overheat when the AC is off?

Posted on Jan 04, 2009

Frank Magliocca

  • 1461 Answers

SOURCE: 95 honda civic lx overheating

COULD BE COOLANT SENSOR,HEAD GASKET,CHECK THE TIMING,THE PROPER MIXTURE OF COOLANT,WATER PUMP.DID YOU HAVE IT CHECKED OUT?ANY LEAKS?HEAT WORK WITH FAN?

Posted on Jan 08, 2009

Anonymous

  • 1 Answer

SOURCE: overheating on stop and go traffic

I had the same problem on my SL1 2002 and my wifes SL2 2001. In both cases, the electric radiator fan motor needed replacing. It was not difficult but took me a full day of trying to figure out how to pull the plastic housing it is mounted in. Someone who knows what they are doing could have changed it in a half hour. Works great now.

Posted on Jan 15, 2009

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My reduce power engine light keep coming on I have a 2005 chevy express van 15 passager what do that mean


it means that there is a problem concerning the engine or transmission and the ECM has placed the system in limp mode which is designed to allow you to get the vehicle out of harms way only
check water in the radiator, check for overheating, sump and transmission oil levels, drive belts, abs and tract control system
have the fault codes read to determine what cause the limp mode setting.

Jun 13, 2015 | 2005 Chevrolet Express

1 Answer

How to change top radiator hose on 1997 dodge conversion van with a 5.2 motor


theirn will be a clamp on the radiator side at the top of the radiator remove this clamp follow the rad hose back to the engine side and you'll see another clamp remove this clamp also twist hose from both the radiator and engine side and pull as twisting this will remove the hose then repeat process for installation make sure engine is cold while changing after reinstallation add proper coolant start engine add more coolant as needed

Sep 01, 2012 | Dodge Ram 2500 Cars & Trucks

1 Answer

1997 chevy express van overheated now no oil pressure


sounds like possibly head gaskets, when you overheated probably warped heads causing coolant in oil and coolant in cylinders therefore partially hydrolocking...antifreeze does not compress like fuel vapors .check oil and see if looks like creme to light chocholate color. this means coolant in oil, this is very ******* bearings, eats them up and if thats the problem you loose oil pressure cause bearings are sloppy from being worn. Bottom Line.you might be looking for another enj.or rebuild

Jan 05, 2012 | 1997 Chevrolet Express

1 Answer

2006 Chevy express van. Normally runs one mark below 1/2 mark. Lately ocassionally goes 1-2 marks above half way (usually when sitting idling). Have had coolant changed (Chevy dealer) and new radiator cap...


You've already eliminated #3 and #6, so keep checking...

Priority Action Part Type Cause
1 Inspect Radiator Cooling System Clogged.
2 Inspect Radiator Radiator Fins Obstructed.
3 Inspect Radiator Cap Worn or Damaged Radiator Cap.
4 Inspect Radiator Fan Motor Faulty Fan Motor.
5 Inspect Belt Incorrectly Routed, Adjusted (Tensioned), Missing or Worn Drive Belt(s).
6 Inspect Thermostat Faulty Thermostat.
7 Inspect Water Pump Worn, Cracked or Leaking Water Pump.
8 Inspect Radiator Fan Relay Intermittent Failure

Jul 16, 2011 | Chevrolet Express Cars & Trucks

1 Answer

I have a 1997 dodge grand caravan with a 3.8L I replaced the radiator cooling fan relay switch and fuses but when idling for more than 5 mins. the van starts overheating


Water pump impeller could be bad or thermostat is stuck shut. I would change thermostat first,easy to change, cost under $10.00 Water pump is hard to change in this van, you have to remove right tire, then inside wheel well, then loosen 3 top motor mount bolts which will lower engine so you can get to water pump and tensioner.

Sep 30, 2010 | 1997 Dodge Grand Caravan

2 Answers

I have a 1999 chevy conversion van 1500 express that starts but turns right off changed fuel pump and relay but still the same looked at dashboard shows security light blinks on and off but when starts for...


first if you have a chiltons manual check the troubleshooting /diagnostic codes. Check fuel filter. check the codes for the computer. sounds like the computers sending back a kill engine order.

Jul 09, 2009 | 1998 Chevrolet C1500

2 Answers

Chevy Venture Overheating


Almost sounds like the same symptons as my van. Turns out the guage was not the problem. The van was in fact running hot because the electric radiator fans were not kicking in when the engine was hot. I replaced the relay switches for the fans. There are two of these in the fuse panel under the hood. There has been no problem with overheating since

Mar 15, 2009 | 1997 Chevrolet Venture

1 Answer

1994 chevy astro van won't start after it overheated


Check your battery and make sure it has plenty of water in it. When your vehicle was hot the water in the battery could have boiled dry also.

Sep 06, 2008 | 1994 Chevrolet Astro

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