91 Turbo Cooling Issues

a400tool · 07-29-2011, 09:55 PM

Yes, fan shroud is in good shape as is the engine under cover.

mirage83 · 07-29-2011, 11:23 PM

Quote:

Originally Posted by a400tool

Yes, fan shroud is in good shape as is the engine under cover.

Damn, was really kinda hoping you'd respond that your shroud was mangled or missing.

How confident are you in your fan clutch? The fluid in them can leak out over time which prevents it from spinning up properly when you're idling.

Also, have you pressurized your coolant system to see if one of your hoses has a weak but not obviously blown area?

Forgive the questions, just trying to hit all the reasonable bases before you go digging into your radiator and water pump.

Green7mgte · 07-30-2011, 03:08 PM

dude a fan shroud, while important isn't as extremely critical as all that.

El Supracabras · 07-30-2011, 05:48 PM

Maybe this will help...or scare you. It scares me..... to think of how many points of failure the cooling system on the 7MGTE has. Hope ya get it sorted out soon.

El Supracabras · 07-30-2011, 05:52 PM

Don't forget this.

mirage83 · 07-31-2011, 12:03 AM

Quote:

Originally Posted by Green7mgte

dude a fan shroud, while important isn't as extremely critical as all that.

I know, but from my perspective every little bit is a gain, and as prone to overheating as these cars are I don't write any contributing factors off.

Green7mgte · 07-31-2011, 12:11 PM

mmm I love coolant diagrams. I've replaced both hoses going to my heater valve assembly.. that 90 degree one is a pain.

97SupraTT · 07-31-2011, 04:39 PM

You have probably already considered it but there may be a clog in the system. Im sure you have already checked to see if your coolant is moving through the system but you could try and run some radiator flush through just in case there is a minor clog that still allows some coolant to pass through.

a400tool · 08-02-2011, 07:36 PM

Quote:

Originally Posted by 97SupraTT

You have probably already considered it but there may be a clog in the system. Im sure you have already checked to see if your coolant is moving through the system but you could try and run some radiator flush through just in case there is a minor clog that still allows some coolant to pass through.

Done all of that. The heater hoses have not been changed. I will take a llok there.

System seems somewhat hard to purge of all the air. Would be easier if there was a purge valve at the top of the radiator.

Thanks.

El Supracabras · 08-05-2011, 01:33 PM

Quote:

Originally Posted by PatiWenlon

A small hole in a hose may not leak coolant but instead suck in air while coolant is circulating.

Stupid spammers.

07-30-2011, 03:08 PM	#3
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	dude a fan shroud, while important isn't as extremely critical as all that. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

07-30-2011, 05:48 PM	#4
El Supracabras 3" Exhaust Join Date: Feb 2010 Location: Chicago Posts: 240	Maybe this will help...or scare you. It scares me..... to think of how many points of failure the cooling system on the 7MGTE has. Hope ya get it sorted out soon. Attached Thumbnails

07-30-2011, 05:52 PM	#5
El Supracabras 3" Exhaust Join Date: Feb 2010 Location: Chicago Posts: 240	Don't forget this. Attached Thumbnails

07-31-2011, 12:11 PM	#7
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	mmm I love coolant diagrams. I've replaced both hoses going to my heater valve assembly.. that 90 degree one is a pain. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
1989 MK3 Turbo (Driveability Issues)	polarbear	MKIII Supra	2	11-01-2010 01:46 AM
First-timer here - turbo noises and smoke issues.	Kuanos	MKIII Supra	4	08-22-2009 04:24 AM
HELP PLEASE	Nick0887	Non-Generation Specific Questions	4	02-28-2009 07:26 AM
Dream Offer	Karma_Supra	MKIV Supra	22	10-17-2007 03:04 PM
Sequential Turbo Question	suprapoweredsoarer	MKIV Supra	1	06-06-2006 12:13 AM

07-29-2011, 09:55 PM	#1
a400tool 3" Exhaust Join Date: Sep 2008 Location: Arizona Posts: 56	Yes, fan shroud is in good shape as is the engine under cover.

07-31-2011, 04:39 PM	#8
97SupraTT 3" Exhaust Join Date: Jun 2009 Location: Guam Posts: 56	You have probably already considered it but there may be a clog in the system. Im sure you have already checked to see if your coolant is moving through the system but you could try and run some radiator flush through just in case there is a minor clog that still allows some coolant to pass through.