c3 guy with c4 question
Thread Starter
Safety Car
Joined: Nov 2007
Posts: 3,570
Likes: 0
From: bottom of the sea
c3 guy with c4 question
well, i fixed the injectors on the 91. I actually am starting to love c4's. what a great car!
question is, is there a trick to getting these things to run cool? owner says its runs hot. fans are not coming on until the gauge is in the red. i want to put a new thermostat in the car because he says he put in a 180 stat himself. and how do i know if the fluid is making it up to the throttle body, with no air bubbles in the system? c3's are tricky to fill up all the way, so i was just wondering.
question is, is there a trick to getting these things to run cool? owner says its runs hot. fans are not coming on until the gauge is in the red. i want to put a new thermostat in the car because he says he put in a 180 stat himself. and how do i know if the fluid is making it up to the throttle body, with no air bubbles in the system? c3's are tricky to fill up all the way, so i was just wondering.
Le Mans Master
Joined: May 2007
Posts: 8,448
Likes: 27
From: Valparaiso
well, i fixed the injectors on the 91. I actually am starting to love c4's. what a great car!
question is, is there a trick to getting these things to run cool? owner says its runs hot. fans are not coming on until the gauge is in the red. i want to put a new thermostat in the car because he says he put in a 180 stat himself. and how do i know if the fluid is making it up to the throttle body, with no air bubbles in the system? c3's are tricky to fill up all the way, so i was just wondering.
question is, is there a trick to getting these things to run cool? owner says its runs hot. fans are not coming on until the gauge is in the red. i want to put a new thermostat in the car because he says he put in a 180 stat himself. and how do i know if the fluid is making it up to the throttle body, with no air bubbles in the system? c3's are tricky to fill up all the way, so i was just wondering.
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
My 91 Never gets in the red even on a 100* day sitting in traffic.
Install the stock 195* Thermostat and do a Complete coolant flush also, remove the knock sensor on the passenger lower side of the block to completely drain the coolant from the block or install the Prestone Backflush tee to backflush the block which is what I do.
When done with the backflush, fill with a 50/50 mix of Green coolant and water and with the heater On/engine idling wait until the thermostat opens and the coolant goes down, then top off with more water and you're done.
Install the stock 195* Thermostat and do a Complete coolant flush also, remove the knock sensor on the passenger lower side of the block to completely drain the coolant from the block or install the Prestone Backflush tee to backflush the block which is what I do.
When done with the backflush, fill with a 50/50 mix of Green coolant and water and with the heater On/engine idling wait until the thermostat opens and the coolant goes down, then top off with more water and you're done.
Last edited by GKK; Oct 4, 2009 at 01:35 PM.
Race Director
Joined: Sep 2003
Posts: 16,836
Likes: 337
From: Database Error Indiana
Have you cleaned the area between the radiator and the AC condenser ?
If not remove the radiator and clean out the leaves, plastic bags and other mystery chit that gets in there.
If not remove the radiator and clean out the leaves, plastic bags and other mystery chit that gets in there.
Racer
Joined: Apr 2000
Posts: 254
Likes: 2
From: Four Hours away from Ten Road Courses! VA
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Safety Car
Joined: Jan 2006
Posts: 3,566
Likes: 4
From: Mt Laurel NJ
St. Jude Donor '06-'07
The pump was leaking very little, not enough to notice, or leave a puddle on the ground. I also replaced the T-stat and the hoses at the same time, but it was the new pump that made the difference.
Randy
Burning Brakes
Joined: Mar 2008
Posts: 1,073
Likes: 8
From: Houston TX
The radiator is the first thing to check if your car is running hot. Pulled mine to clean it out and thing was PACKED with leaves / debris. FYI: you will need to discharge the A/C to pull the radiator.
Also know, if you are running a car above 230 degrees or so you are greatly increasing your chances of blowing a head gasket.
Also know, if you are running a car above 230 degrees or so you are greatly increasing your chances of blowing a head gasket.
Thread Starter
Safety Car
Joined: Nov 2007
Posts: 3,570
Likes: 0
From: bottom of the sea
thanks for all the replies. i will get with the owner to see if he has debris in his rad, although i went through the car pretty thouroghly when i did the injectors, and didnt notice any debris. he's got a rubber flap that goes under the air intake that doesnt quite fit the way i think it should and i want to change the t-stsat, but it's curious why the fans dont come on until it hits ( the gauge ) 260