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Chevy Venture overheating problem

110 messages,  Last post on Nov 30, 2009 at 11:24 AM

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#101 of 110 Re: 02 chevy venture overheating [kyjeffry3] by AJGWHEELS Sep 05, 2009 (5:26 pm)
Replying to: kyjeffry3 (Sep 05, 2009 4:31 pm) hi MOM of three :                             this is what I did to repair my VENTURE Overheating problem,       first I change the WATER PUMP , they have a new IMPROVED WATER PUMP design with the propellers a little bigger and in metal , the PLENUM intake & EXHAUST gaskets ( comes in a kit ) , replace 2 short hoses located around the OIL FILTER , and finally get a NEW RADIATOR , and that will take care of the problem . Im using one gallon of DEX COOL COOLANT (as specified by manufacturer ) and two gallons of DISTILLED WATER , not regular water cause it contains clorox and could damage engine cause its made of aluminum . Since you havent mentioned replacing the RADIATOR , I think it should be considered to do so . let me know so I can help you out . ALBERT JULIAN
#102 of 110 OVERHEATING issues on 02 Chevy venture by jbranson Oct 06, 2009 (11:55 am)
Ok so i have read ALOT about this problem on the Chevy venture! PLEASE HELP! We just bought this van and it was running fine! I change the fluids in the van after we get it it started to run HOT! I have air bubbles in it! Took to radiator shop and had it flushed. still running hot I had it pressured checked and that came back normal. So i change the water pump and thermostat. Now the check engine light is on (Code p0122) and still runs hot. it goes past the 1/2 toward hot then will come back down then go up. Someone said that it could be the Dash??? Please help Thank you! Replies to this message: davy2 (Oct 07, 2009 2:08 am)
#103 of 110 Re: overheating [gmz1] by jbranson Oct 06, 2009 (12:04 pm)
Replying to: gmz1 (Apr 16, 2009 5:34 pm) Was you loosing water? We have not lost any? So i am not sure what our problem is we have replaced the water pump thermostat rad cap and had it pressured tested. any ideas ? Replies to this message: k00l4id (Oct 06, 2009 12:35 pm) jbranson (Oct 06, 2009 2:01 pm)
#104 of 110 Re: overheating [jbranson] by k00l4id Oct 06, 2009 (12:35 pm)
Replying to: jbranson (Oct 06, 2009 12:04 pm) I would suggest doing a pressure test on the cooling system. In the 2002 models there was a changeup for the head gasket and that might be whats causing you to run hot without noticing a leak on the outside of the heads or block. I had the same problem in my 04, i changed the thermostat and flushed the whole system. Replies to this message: jbranson (Oct 06, 2009 2:01 pm)
#105 of 110 Re: overheating [k00l4id] by jbranson Oct 06, 2009 (2:01 pm)
Replying to: k00l4id (Oct 06, 2009 12:35 pm) so the 02 head gaskets are "bad" and i may need to change them? we have changed the thermostat and flushed the whole system as well as new water pump.
#106 of 110 Re: OVERHEATING issues on 02 Chevy venture [jbranson] by davy2 Oct 07, 2009 (2:08 am)
Replying to: jbranson (Oct 06, 2009 11:55 am) Simple check. The next time you are out and the temp gauge starts to climb, turn on your A/C and see if it goes down. There are two relays in the fuse box which control the cooling fans. While driving at slow speeds they might not be activated, but the A/C over rides them and turns them on.... I have replaced mine twice already...
#107 of 110 FANS by jbranson Oct 07, 2009 (7:26 pm)
my temp gauge goes to 3/4 before the fans come on???? I have replaced the Temp switch, the Thermostat, and water pump. Have had it pressure checked they said it was getting to 195 degrees they said thats normal. PLEASE HELP!!
#108 of 110 Temp Gauge by jbranson Oct 09, 2009 (5:52 am)
OK my van is really having some issues!   we have changed the water pump, thermostat, had radior flushed, pressure checked, thought we had a air pocket so we had it vacuumed then Dye in the system to check for a blown head gasket. Can someone please tell me what else could it be?? HELP!!! Replies to this message: k00l4id (Oct 09, 2009 5:58 am)
#109 of 110 Re: Temp Gauge [jbranson] by k00l4id Oct 09, 2009 (5:58 am)
Replying to: jbranson (Oct 09, 2009 5:52 am) bad temp sensor? Bad guage?
#110 of 110 Temp climb by tajavelin Nov 30, 2009 (11:24 am)
After a 150mile drive I noticed that under acceleration the temperature climbs under acceleration. Never past the 1/2 way mark though it will in traffic till the fans kick in. I know this seems like no big thing, but I noticed that it will also started to feel boggy like I was towing something as well. I have replaced the radiator, bled system, new coolant fans relays.. No codes but the long throw with the trans which I don't want to do til I get the heating underpowerd situation satisfied. Could the cause be the high pressure of the trans adding too much strain on the engine at acceleration ? I know the pump is working harder but will that cause so much drag that it is like I am pulling a heavy load ? Thanks Bob

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