95 vette overheating ... just got it ...please help
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Re: 95 vette overheating ... just got it ...please help (YoungVetteOwner)
If the fans worked, then didn't, when it went to 240 (f) ......it is possible there is a open or ground in the wiring since you were disturbing the wires. You need to put the PCM into the "diagnosic mode" which will turn on everyting but the fuel pump. Your fans and relays will be energized and should run. You then can see if the fans respond or not. At that point you can check the wiring for the fans, relays etc. and maybe duplicate the problem if there is a break.
A dvm= digital volt meter.
CTS= coolant temp. sensor located on the front of the water pump.
If you research the files you will see how to put the car into the diagonistic mode.
I can't help you with the new radiator question, but @ 190,000 miles, it has paid it's rent. :jester
[Modified by ittlfly, 5:06 PM 12/4/2002]
A dvm= digital volt meter.
CTS= coolant temp. sensor located on the front of the water pump.
If you research the files you will see how to put the car into the diagonistic mode.
I can't help you with the new radiator question, but @ 190,000 miles, it has paid it's rent. :jester
[Modified by ittlfly, 5:06 PM 12/4/2002]
Race Director
Joined: Oct 2001
Posts: 12,832
Likes: 209
From: Canton GA
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VI Veteran
St. Jude Donor '03-'05-'06-'10-'11-'12
Re: 95 vette overheating ... just got it ...please help (YoungVetteOwner)
Which wires did you mess with? If it was the wires to the front of the water pump area, that's where your CTS is. It's very possible corrosion has built up and changed the resistance readings that the ECM reads. A pencil eraser is a great remedy if not simply replacing the sensor and/or the connector.
I took a quick glance at my radiator and there are no holes anywhere around that hose. You may be seeing a failure take place. It wouldn't hurt to replace that radiator. http://www.tld-corvette.com has good prices and lots of parts in stock. It looks like you are narrowing down the problem! :yesnod:
[EDIT]: Also remember that the coolant system is a closed system and relies on pressure to raise the boiling point of the coolant. If there is an open in the system, it will boil at 212* (ok, maybe 214 because of the mixture), hence the boil-over. This will occur long before the fans even consider turning on.
[Modified by 92Shawnster, 8:13 PM 12/4/2002]
I took a quick glance at my radiator and there are no holes anywhere around that hose. You may be seeing a failure take place. It wouldn't hurt to replace that radiator. http://www.tld-corvette.com has good prices and lots of parts in stock. It looks like you are narrowing down the problem! :yesnod:
[EDIT]: Also remember that the coolant system is a closed system and relies on pressure to raise the boiling point of the coolant. If there is an open in the system, it will boil at 212* (ok, maybe 214 because of the mixture), hence the boil-over. This will occur long before the fans even consider turning on.
[Modified by 92Shawnster, 8:13 PM 12/4/2002]
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Re: 95 vette overheating ... just got it ...please help (YoungVetteOwner)
..there was an extra digital reading that says auto then it read 170 what is that reading for?
Race Director
Joined: Oct 2001
Posts: 12,832
Likes: 209
From: Canton GA
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VI Veteran
St. Jude Donor '03-'05-'06-'10-'11-'12
Re: 95 vette overheating ... just got it ...please help (c4cruiser)
..there was an extra digital reading that says auto then it read 170 what is that reading for?
That is the automatic transmission oil temperature. 95 and 96 cars had this feature.
That is the automatic transmission oil temperature. 95 and 96 cars had this feature.
Thread Starter
Intermediate
Joined: Dec 2002
Posts: 47
Likes: 0
From: escondido ca
Re: 95 vette overheating ... just got it ...please help (ittlfly)
back to what u said about putting the car in diagnostic mode..... what files do i search to find out how to do that?
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Re: 95 vette overheating ... just got it ...please help (YoungVetteOwner)
I looked and couldn't find the procedure so If it is the same for your 94 as my 92, the procedure is: locate the ALDL (under the dash left side next to the center console). key off; take a paper clip and straighten it out; jump the A&B connections (they are the 2 bays on the ALDL 1st row left side next to each other). Key on; and the fans along with all the relays will fire up. the message center will flash out the code 12 --3 times. If there are any stored codes it will follow code 12. you might check with someone else before you do this as I'm not to sure in what year the OBDII system came into play. My 92 is a OBDI. The above procedure is for the OBDI. Maybe someone will jump in here.
Melting Slicks
Joined: Feb 1999
Posts: 3,261
Likes: 9
From: sonoma ca
Re: 95 vette overheating ... just got it ...please help (ittlfly)
YVO
You shud have a 16 pin DLC, from left to right top row, 1 thru 8.
Left to right, bottom row, 9 thru 16. Ground pins #4 to #12 to enter the diagnostic mode.......................
You shud have a 16 pin DLC, from left to right top row, 1 thru 8.
Left to right, bottom row, 9 thru 16. Ground pins #4 to #12 to enter the diagnostic mode.......................
Thread Starter
Intermediate
Joined: Dec 2002
Posts: 47
Likes: 0
From: escondido ca
Re: 95 vette overheating ... just got it ...please help (lou sylvestri)
hey lou i think my main problem might be that i dont know exactly which one is the relay i need to check because i found three of them together on the right side of the intake filter but none of them had 2 rows of 8 pins if i remember correctly it was only 6 pins all together on all 3 of them, this was very confusing because thats what the haynes manual said it should be like also(2 rows of 8 pins) but i couldnt find anything like that. maybe thats how it was on the models prior to the 95. if im wrong please let me know maybe im not lookin in the right places.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Feb 1999
Posts: 3,261
Likes: 9
From: sonoma ca
Re: 95 vette overheating ... just got it ...please help (YoungVetteOwner)
YVL,
Were referring to the Data Line Connector that is located on the right side of the steering column above where your ankle would be. It might be a little hard to find. It could possibly have a cover over it. Its about 2 inches long & a 1/2 inch thick.. Get down there with a flashlight & you shud be able to find it. When you find it get your self a paperclip & insert each end into the pins indicated earlier, then turn on the key & watch the speedo for codes. I believe you have enough info to take over from there. Check your mail.
Were referring to the Data Line Connector that is located on the right side of the steering column above where your ankle would be. It might be a little hard to find. It could possibly have a cover over it. Its about 2 inches long & a 1/2 inch thick.. Get down there with a flashlight & you shud be able to find it. When you find it get your self a paperclip & insert each end into the pins indicated earlier, then turn on the key & watch the speedo for codes. I believe you have enough info to take over from there. Check your mail.
Race Director
Joined: Oct 2001
Posts: 12,832
Likes: 209
From: Canton GA
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VI Veteran
St. Jude Donor '03-'05-'06-'10-'11-'12
Re: 95 vette overheating ... just got it ...please help (lou sylvestri)
The steering column is to the left of that connector, the accelerator pedal is straight ahead.
