Little help.... please - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bcanini · 06-01-2007, 06:57 PM

Hey everyone!!!

Need some input from you guys. (I've searched the forums)
My trucks getting hot, I've bypassed the heater core (PO) have a new thermostat (drilled a little hole in it)new sending unit, new molded lower hose,good upper, new radiator and my truck is pegged almost to the end of the scale, but... it's not boiling over coming out when it's this hot.
B4 I put in the t-stat it was cool cruising warm at lights etc. Tstat in warm all the time. Soo... the only things I haven't replaced is the gauge itself and the waterpump, the pump seems to be fine the return from the manifold into the radiator has good flow and increases w/ rpms. I'm confused.

ANY HELP IS APPRECIATED!!!!!!!

I've bought an aftermarket gauge and another water pump,but really would like to figure out what it is b4 I change all that out. Is there a way to check the gauge and the pump???
Ohh and I've pressure tested the system at 18lbs and seemed fine.

Brian

I just wanna drive me truck

Longhorn Man · 06-01-2007, 07:06 PM

install the aftermarket guage and see if you've been chacing pink elephants.

rikyric · 06-01-2007, 07:07 PM

I had the same problem as you last week. I did everything you described. First make sure your thermostat is opening I tested mine in a pot of boiling water to make sure it opened up. I fixed my overheating problem after replacing my fan clutch. Mine was shot....

71chevylowrider · 06-01-2007, 07:11 PM

Hey Brian didn't you say one time before that with the thermostat in, it get's hot when your cruising on the freeway, but not overheating around town? That sounds more like a water flow problem then an airflow problem to me. Oh, I re-read what you just said & I see now that it's always hot with the tstat in, sorry.

**67 cst swb** · 06-01-2007, 07:17 PM

I suspect gauge... Let us know what you find out... or possibly a bad T-stat. FYI,...a vehicle will likely overheat on the freeway at highway speeds if no T-stat installed as the water flows thru the radiator too fast to cool.

bcanini · 06-01-2007, 09:00 PM

Thanks guys,

I'm thinking pink elephants myself. thermostat was tested in water with a thermometer 180, clutch could be suspect. I'll do the gauge tonight and let you know what happens.

Thanks again.

B

sodak69c10 · 06-01-2007, 09:25 PM

sounds like the guage, make sure if it is electric guage to use correct sender or you will get a false reading, my grand prix reads 210* but i checked it with a thermometer in the coolant and it runs at 180* because it has the new engine had different sender

67ChevyRedneck · 06-01-2007, 10:02 PM

I chased pink elephants myself once... I bought a sunpro gauge from Advance. I about crapped my pants when my brand new engine jumped to 230 degrees after 2 minutes or running. Brand new motor, radiator, wp, hoses (WITH springs), new fan, shroud, and t-stat. I chased and tinkered for a whole day with it before I thought, maybe my new fandango gauge is bad? YUP! Bad gauge. Installed new one, never went above 190 degrees.

Did you happen to put springs in your hoses? That sometimes makes a big difference. It's not really needed at all on the top one, but it helps keep the bottom one from collapsing.

I might have missed it in your last post, buy have you tried a new fan?

bcanini · 06-02-2007, 02:52 AM

guys thanks for the comments!
I changed the gauge,drove it for about oh 1/2 hr never got over 192 mainly stayed around 185, it was about 15 degrees cooler (outside temp) so I'll know for sure tomorrow. I think it's fixed.
Got 2 car shows tomorrow to check out so I wanted it to be sure.
again thanks.
B

Longhorn Man · 06-02-2007, 11:36 AM

damn pink elepahnts

cdowns · 06-02-2007, 12:13 PM

go to your local supermarket spend a couple of dollars for a good therometer to check the temp of your coolant

67ChevyRedneck · 06-02-2007, 07:30 PM

That's great! Sometimes it's the most uncommon thing....

Longhorn Man · 06-02-2007, 07:44 PM

a bum guage is more likely than you think... be it in new cars or old ones. I've seen ppl spend big bucks trying to fix something that isn't broken.

eedgell · 06-02-2007, 07:50 PM

What engine do you have?

bcanini · 06-02-2007, 09:36 PM

Pink elephants is right.

eedgell.. 350/350

Drove it all over today gents and didn't get over 195 in traffic (yesss...) it's fixed! 85-89 degrees outside today, so it was a bum gauge. I can tell you that b4 I mess w/ a cooling problem again the 1st thing to check will be te guage. Lots of nice cars/trucks today.!!!!! going tonight for the band and a bunch more cars etc.. home grilling some meat now!!
Thanks again everyone

B

eedgell · 06-02-2007, 10:30 PM

Perfect!! I was thinking 400 sbc on a rebuild that did not have 400 heads, for the steam relief holes. seen that happen before, but glad you are all fixed up!!!!

06-01-2007, 06:57 PM	#1
bcanini "Taste It" Join Date: Aug 2006 Location: Keizer, Oregon Posts: 280	Little help.... please Hey everyone!!! Need some input from you guys. (I've searched the forums) My trucks getting hot, I've bypassed the heater core (PO) have a new thermostat (drilled a little hole in it)new sending unit, new molded lower hose,good upper, new radiator and my truck is pegged almost to the end of the scale, but... it's not boiling over coming out when it's this hot. B4 I put in the t-stat it was cool cruising warm at lights etc. Tstat in warm all the time. Soo... the only things I haven't replaced is the gauge itself and the waterpump, the pump seems to be fine the return from the manifold into the radiator has good flow and increases w/ rpms. I'm confused. ANY HELP IS APPRECIATED!!!!!!! I've bought an aftermarket gauge and another water pump,but really would like to figure out what it is b4 I change all that out. Is there a way to check the gauge and the pump??? Ohh and I've pressure tested the system at 18lbs and seemed fine. Brian I just wanna drive me truck __________________ 71 Chevrolet short fleet Cheyenne air cab/tilt w buddy buckets pretty stock other wise. 2007 Silverado Crew with the MAX Pack and loaded 2007 CX-9 "Hopefully when I die.. my wife wont sell my stuff for what I said I paid for it" It's easier to ask forgiveness than it is to ask permission. Last edited by bcanini; 06-01-2007 at 06:59 PM. Reason: words

06-01-2007, 07:06 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Little help.... please install the aftermarket guage and see if you've been chacing pink elephants.

06-01-2007, 07:07 PM	#3
rikyric Registered User Join Date: Apr 2007 Location: Puyallup, WA Posts: 99	Re: Little help.... please I had the same problem as you last week. I did everything you described. First make sure your thermostat is opening I tested mine in a pot of boiling water to make sure it opened up. I fixed my overheating problem after replacing my fan clutch. Mine was shot.... Last edited by rikyric; 06-01-2007 at 07:07 PM.

06-01-2007, 07:11 PM	#4
71chevylowrider Senior Member Join Date: Sep 2006 Location: Vancouver, WA Posts: 1,015	Re: Little help.... please Hey Brian didn't you say one time before that with the thermostat in, it get's hot when your cruising on the freeway, but not overheating around town? That sounds more like a water flow problem then an airflow problem to me. Oh, I re-read what you just said & I see now that it's always hot with the tstat in, sorry. Last edited by 71chevylowrider; 06-01-2007 at 07:12 PM.

06-01-2007, 07:17 PM	#5
67 cst swb Senior Member Join Date: Nov 2001 Location: Rapid City, SD Posts: 2,281	Re: Little help.... please I suspect gauge... Let us know what you find out... or possibly a bad T-stat. FYI,...a vehicle will likely overheat on the freeway at highway speeds if no T-stat installed as the water flows thru the radiator too fast to cool. __________________ My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White

06-01-2007, 09:00 PM	#6
bcanini "Taste It" Join Date: Aug 2006 Location: Keizer, Oregon Posts: 280	Re: Little help.... please Thanks guys, I'm thinking pink elephants myself. thermostat was tested in water with a thermometer 180, clutch could be suspect. I'll do the gauge tonight and let you know what happens. Thanks again. B __________________ 71 Chevrolet short fleet Cheyenne air cab/tilt w buddy buckets pretty stock other wise. 2007 Silverado Crew with the MAX Pack and loaded 2007 CX-9 "Hopefully when I die.. my wife wont sell my stuff for what I said I paid for it" It's easier to ask forgiveness than it is to ask permission.

06-01-2007, 09:25 PM	#7
sodak69c10 Registered User Join Date: Mar 2007 Location: Rapid City, South Dakota Posts: 285	Re: Little help.... please sounds like the guage, make sure if it is electric guage to use correct sender or you will get a false reading, my grand prix reads 210* but i checked it with a thermometer in the coolant and it runs at 180* because it has the new engine had different sender __________________ ,Clint LOUD PIPES SAVE LIVES 69 C-10 short stepside 406 sbc, 02 YAMAHA WR250F, 07 SUZUKI SV650S, 81 Grand Prix 355 sbc, 81 XT 500 YAMAHA

06-01-2007, 10:02 PM	#8
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Little help.... please I chased pink elephants myself once... I bought a sunpro gauge from Advance. I about crapped my pants when my brand new engine jumped to 230 degrees after 2 minutes or running. Brand new motor, radiator, wp, hoses (WITH springs), new fan, shroud, and t-stat. I chased and tinkered for a whole day with it before I thought, maybe my new fandango gauge is bad? YUP! Bad gauge. Installed new one, never went above 190 degrees. Did you happen to put springs in your hoses? That sometimes makes a big difference. It's not really needed at all on the top one, but it helps keep the bottom one from collapsing. I might have missed it in your last post, buy have you tried a new fan? __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 06-01-2007 at 10:03 PM.

06-02-2007, 02:52 AM	#9
bcanini "Taste It" Join Date: Aug 2006 Location: Keizer, Oregon Posts: 280	Re: Little help.... please guys thanks for the comments! I changed the gauge,drove it for about oh 1/2 hr never got over 192 mainly stayed around 185, it was about 15 degrees cooler (outside temp) so I'll know for sure tomorrow. I think it's fixed. Got 2 car shows tomorrow to check out so I wanted it to be sure. again thanks. B __________________ 71 Chevrolet short fleet Cheyenne air cab/tilt w buddy buckets pretty stock other wise. 2007 Silverado Crew with the MAX Pack and loaded 2007 CX-9 "Hopefully when I die.. my wife wont sell my stuff for what I said I paid for it" It's easier to ask forgiveness than it is to ask permission. Last edited by bcanini; 06-02-2007 at 02:53 AM.

06-02-2007, 11:36 AM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Little help.... please damn pink elepahnts

06-02-2007, 12:13 PM	#11
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Little help.... please go to your local supermarket spend a couple of dollars for a good therometer to check the temp of your coolant __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

06-02-2007, 07:30 PM	#12
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Little help.... please That's great! Sometimes it's the most uncommon thing.... __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

06-02-2007, 07:44 PM	#13
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Little help.... please a bum guage is more likely than you think... be it in new cars or old ones. I've seen ppl spend big bucks trying to fix something that isn't broken.

06-02-2007, 07:50 PM	#14
eedgell It's the air up here Join Date: Mar 2007 Location: Western Colorado Posts: 710	Re: Little help.... please What engine do you have? __________________ 1971 cheyenne k10 4 speed np 205 454 BB factory a/c Never drink down stream of the herd! Eric

06-02-2007, 09:36 PM	#15
bcanini "Taste It" Join Date: Aug 2006 Location: Keizer, Oregon Posts: 280	Re: Little help.... please Pink elephants is right. eedgell.. 350/350 Drove it all over today gents and didn't get over 195 in traffic (yesss...) it's fixed! 85-89 degrees outside today, so it was a bum gauge. I can tell you that b4 I mess w/ a cooling problem again the 1st thing to check will be te guage. Lots of nice cars/trucks today.!!!!! going tonight for the band and a bunch more cars etc.. home grilling some meat now!! Thanks again everyone B __________________ 71 Chevrolet short fleet Cheyenne air cab/tilt w buddy buckets pretty stock other wise. 2007 Silverado Crew with the MAX Pack and loaded 2007 CX-9 "Hopefully when I die.. my wife wont sell my stuff for what I said I paid for it" It's easier to ask forgiveness than it is to ask permission.



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06-02-2007, 10:30 PM	#16
eedgell It's the air up here Join Date: Mar 2007 Location: Western Colorado Posts: 710	Re: Little help.... please Perfect!! I was thinking 400 sbc on a rebuild that did not have 400 heads, for the steam relief holes. seen that happen before, but glad you are all fixed up!!!! __________________ 1971 cheyenne k10 4 speed np 205 454 BB factory a/c Never drink down stream of the herd! Eric

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