Must it be removed?
Thread Starter
Racer
Joined: Jan 2023
Posts: 277
Likes: 48
From: Transylvania
Must it be removed?
I did some searching, and what i could uncover is "take to bolts out, replace thermostat, seal up, add coolant. burp, top off, Send it!!
Must i remove the throttle body, i order to get to the egr solenoid, to get to the rear-most t-stat housing bolt?? Also, there seems to be a decent amount of leaves, behind my injectors.. i pulled out what i could..
But anyway, will i need to remove throttle body to get to the egr solenoid, to inititally, get to that rear t-stat housing bolt???? Any means of insight, is greatly appreciated.
Must i remove the throttle body, i order to get to the egr solenoid, to get to the rear-most t-stat housing bolt?? Also, there seems to be a decent amount of leaves, behind my injectors.. i pulled out what i could..
But anyway, will i need to remove throttle body to get to the egr solenoid, to inititally, get to that rear t-stat housing bolt???? Any means of insight, is greatly appreciated.
Oil Producer
Joined: Apr 2014
Posts: 9,372
Likes: 2,736
I did some searching, and what i could uncover is "take to bolts out, replace thermostat, seal up, add coolant. burp, top off, Send it!!
Must i remove the throttle body, i order to get to the egr solenoid, to get to the rear-most t-stat housing bolt?? Also, there seems to be a decent amount of leaves, behind my injectors.. i pulled out what i could..
But anyway, will i need to remove throttle body to get to the egr solenoid, to inititally, get to that rear t-stat housing bolt???? Any means of insight, is greatly appreciated.
Must i remove the throttle body, i order to get to the egr solenoid, to get to the rear-most t-stat housing bolt?? Also, there seems to be a decent amount of leaves, behind my injectors.. i pulled out what i could..
But anyway, will i need to remove throttle body to get to the egr solenoid, to inititally, get to that rear t-stat housing bolt???? Any means of insight, is greatly appreciated.
compressed air can blow out alot of junk under the plenum. a strategically placed shop vac sucking out the opposite side can collect alot it while blowing
Thread Starter
Racer
Joined: Jan 2023
Posts: 277
Likes: 48
From: Transylvania
No compressed air, at the moment...
VikingTrad3r,
I got the majority of them free and out.. leaves that is. So yes, even though I have plenty of tools at my disposal, I still wanted to know. Welps, looks like the throttle body's coming off...
There aren't a lot of earlier c4 coolant systems video's on utube. And the few I viewed, the EGR solenoid wasn't fastened down. I believe this is the OEM thermostat!! lol.. if that's the only issue with it "running hot, then parked for >4yrs" I'm a Lucky Dog!!!
I got the majority of them free and out.. leaves that is. So yes, even though I have plenty of tools at my disposal, I still wanted to know. Welps, looks like the throttle body's coming off...
There aren't a lot of earlier c4 coolant systems video's on utube. And the few I viewed, the EGR solenoid wasn't fastened down. I believe this is the OEM thermostat!! lol.. if that's the only issue with it "running hot, then parked for >4yrs" I'm a Lucky Dog!!!
Safety Car
Joined: Mar 2017
Posts: 4,202
Likes: 1,323
From: LeClaire Iowa
VikingTrad3r,
I got the majority of them free and out.. leaves that is. So yes, even though I have plenty of tools at my disposal, I still wanted to know. Welps, looks like the throttle body's coming off...
There aren't a lot of earlier c4 coolant systems video's on utube. And the few I viewed, the EGR solenoid wasn't fastened down. I believe this is the OEM thermostat!! lol.. if that's the only issue with it "running hot, then parked for >4yrs" I'm a Lucky Dog!!!
I got the majority of them free and out.. leaves that is. So yes, even though I have plenty of tools at my disposal, I still wanted to know. Welps, looks like the throttle body's coming off...
There aren't a lot of earlier c4 coolant systems video's on utube. And the few I viewed, the EGR solenoid wasn't fastened down. I believe this is the OEM thermostat!! lol.. if that's the only issue with it "running hot, then parked for >4yrs" I'm a Lucky Dog!!!
Thread Starter
Racer
Joined: Jan 2023
Posts: 277
Likes: 48
From: Transylvania
Whaleman:
I know what your saying. First off, it needs 4 tires, 5yr old brakes/rotors. It took a fuel pump assembly new pump kit, and manually drain 9 gallons of Gak!!! starts right up, but like you said, I haven't yet did a coolant leak down test.
If it needs a head gasket, I'll do both. The thing is, you have got to be Really dedicated to perform that job, outside in 41F weather. I know for a fact the t-stat wasn't opening.. at all.. that gives some ray of hope. I guess that fixes that, but the initial reason still lingers...it was purchased , knowing it needed a head gasket.. Welps.. "Hope for the Best!, expect the Worst!
I know what your saying. First off, it needs 4 tires, 5yr old brakes/rotors. It took a fuel pump assembly new pump kit, and manually drain 9 gallons of Gak!!! starts right up, but like you said, I haven't yet did a coolant leak down test.
If it needs a head gasket, I'll do both. The thing is, you have got to be Really dedicated to perform that job, outside in 41F weather. I know for a fact the t-stat wasn't opening.. at all.. that gives some ray of hope. I guess that fixes that, but the initial reason still lingers...it was purchased , knowing it needed a head gasket.. Welps.. "Hope for the Best!, expect the Worst!
Thread Starter
Racer
Joined: Jan 2023
Posts: 277
Likes: 48
From: Transylvania
Jeff,
memorizing zero page, and working with pointers, and subroutines... exercises the mind!! at least a little bit.. I've taken more pictures of this Corvette than any other car I've owned, and I've only driven it for 2mins. lol..
memorizing zero page, and working with pointers, and subroutines... exercises the mind!! at least a little bit.. I've taken more pictures of this Corvette than any other car I've owned, and I've only driven it for 2mins. lol..
Thread Starter
Racer
Joined: Jan 2023
Posts: 277
Likes: 48
From: Transylvania
Og!!!
The thermostat and most of the coolant hoses had factory clamps, and look as if they've never been replaced!! Got TB off, came home, and the coolant bypass hose arrived!!! now to gently unclip the CTS harness, replace it, and both sending units in each head, thermostat and gasket, and I'm in business. Also managed to snag a throttle body gasket KIT!!!! I'm only concerned about the mating surface gasket, and will rebuild TB down the road..
Got 8 plugs, and a BNIB set of plug wires from Jeg's!! thatz next, "accel" ignition module, and also accell cap & rotor.....
Got 8 plugs, and a BNIB set of plug wires from Jeg's!! thatz next, "accel" ignition module, and also accell cap & rotor.....
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
Thread Starter
Racer
Joined: Jan 2023
Posts: 277
Likes: 48
From: Transylvania
Of course...
The Coolant Temp Sensor, that plugged into the middle of the engine, up front.. that sensor broke so fast my head spun!!! Ended up getting a new Sending unit, and pigtail soldered ,and heat shrank both wires. The sending unit in the drivers side head was also replaced, with a new, single wire pigtail. Then the passenger side hemisphere, the Gauge sending unit was replaced, and luckily its connection is simply a spade connector. New thermostat (195F), and felpro gasket. New throttle body mating gasket. If it gets hot now, before we use the chemicals, I'm going to halt, and begin removing the cylinder heads. If i can keep the temperature controlled, then i didn't do too bad. Would anybody reading this know perhaps, where the sensor that illuminates the "Low Coolant" light in the info center/? the overflow reservoir is topped off. (Not by me). IIRC someone already answered that question, but for the Life of me, I cannot seem to retrieve that thread, post, reply. If it's the single wire unit on passenger side of radiator??, then, "Thank You for verifying that.. again"
Last edited by stiggity99; Mar 3, 2023 at 01:39 PM. Reason: ggrrrrrrrrrrrrrrr..
Thread Starter
Racer
Joined: Jan 2023
Posts: 277
Likes: 48
From: Transylvania
heeehhe toldja so ..............
Whaleman:
I must have gotten lucky!! fires right up, idles flawlessly too i might add. Temperature slowly climbs until it's ~ 195F, t-stat opens, and the temp re-starts it's journey @ ~172F. I witnessed this 4 or 5 cycle. None of the fans come on, but its not seeing much more than ~195F. Now the system has only been tested at idle. Later on this morning, I'll be going for cruise number two. Am putting gas in it, and testing shocks... next item shocks, then tires. The if I don't already need them, cap rotors, ignition module, and cap cover. Going to try and get 8 plugs and wires changed out today. Get gas, and install new plugs/wires. Ott, she's behaving alright..
I must have gotten lucky!! fires right up, idles flawlessly too i might add. Temperature slowly climbs until it's ~ 195F, t-stat opens, and the temp re-starts it's journey @ ~172F. I witnessed this 4 or 5 cycle. None of the fans come on, but its not seeing much more than ~195F. Now the system has only been tested at idle. Later on this morning, I'll be going for cruise number two. Am putting gas in it, and testing shocks... next item shocks, then tires. The if I don't already need them, cap rotors, ignition module, and cap cover. Going to try and get 8 plugs and wires changed out today. Get gas, and install new plugs/wires. Ott, she's behaving alright..
Thread Starter
Racer
Joined: Jan 2023
Posts: 277
Likes: 48
From: Transylvania
tomorrow..
Got a great deal on 4 brand new 275/40-zr17 tires today. She'll be on the lift early tomorrow, and installing tires. Should I eliminate the TPMS?? (I haven't visually seen the sensors.) I don't know if there on a band attached to the inner rim, or fastened onto the valve stem. Yes, my car had this feature when it was built. IDK How it works in an '89??? Lights not on now, and I'm sure the tires aren't inflated correct?? just to ease my mind, shud i put 4 new stems in, and eliminate the whole thing of failing, and leaving me stranded at 711 parking lot.
I'm also going to inspect it, and put stickers on it. Brakes look new, feel like dung, but has a good pedal. And I'm going to begin driving it tomorrow. wish me luck. The thermostat was the culprit after all.. i 'll report back after my first real cruise..
I'm also going to inspect it, and put stickers on it. Brakes look new, feel like dung, but has a good pedal. And I'm going to begin driving it tomorrow. wish me luck. The thermostat was the culprit after all.. i 'll report back after my first real cruise..