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09-29-2015, 12:20 AM #1Lurker
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- Offline
- Join Date
- Sep 2015
- Name
- Caleb
- Vehicle
- '94 Bright Teal Z28 M6
- Location
- Lafayette IN
- Posts
- 132
Maintenance on my '94 z28 pic heavy
Heya guys. I'm going to log the stuff I've been working on with my new car. Maybe someone else will need to do what I am and find this.
I sold my old '00 3800 camaro that was my first car. I drove it for 10 years. I think it had 145k miles on it. It was a nice car to have, but I never wanted to upgrade it much since it was only a v-6.
I just bought a teal z28 M6 with 30k miles. I looked at the bill of sale and the previous owner put about 5k miles on it in 4 years. I am the third owner of the car.
I think all sitting and no driving has shrunk some of the seals. It had an oil leak from the intake manifold which I repaired.
The repair took me about a whole day. I went over everything dirty and replaced/fixed some things.
I changed oil and filter (castrol edge and K&N chevy truck filter). After the oil change it still leaked. The left side of the motor is wet beneath the exhaust manifold. I couldn't get a clear picture. the oil cooler assy is wet and my transmission too. Valve cover is dry. Tomorrow I'll check again. I wiped up the wet spots.
Sent from my iPhone using TapatalkBright Teal ’94 Z28 – K&N CAI – Speed Engineering LTs – Pacesetter ORY – Magnaflow Muff
Test my MPG Calculator https://docs.google.com/spreadsheets...it?usp=sharing
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09-29-2015, 12:37 AM #2Lurker
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- Offline
- Join Date
- Sep 2015
- Name
- Caleb
- Vehicle
- '94 Bright Teal Z28 M6
- Location
- Lafayette IN
- Posts
- 132
Every time I get started on one problem I end up getting side-tracked on another!
Today I wanted to try and find why it smells like gas in my car. I guessed I may have messed up hooking the fuel rail back in when I redid my intake gasket. I checked the connections and lifted the rail, I couldn't find anything. I'm thinking it's my charcoal canister. We've got a gas tank on the farm but it doesn't shut off sometime. It overflowed for a sec before I could shut it off. I'm going to have figure out where the canister even is!
After that I wanted to work in some cooling issues. The car runs around 225 in town. When it gets hot the oil leak smells really bad.
I used a hand pump and got the old coolant out if the radiator and overflow tank. Looking from the radiator neck the coolant looked green. Rusty sludge came out from the seal on the cap. I drained both flushed and refilled. Took the battery and overflow out. Here's a pic of the second overflow flush contents. I hope my engine isn't full of that!
My coolant low light also flickers constantly every two seconds. Here is why! It is important to clean out the hole that the sensor goes into! It was full of this brown crap too!
I am afraid to do a full flush, my heater bleed valve is broken off right now. I bought this to replace it
http://jagsthatrun.com/Pages/Parts_C...ightGlass.html
Afraid if I flush the system I won't be able to bleed the heater hoses. Pretty sure they are dry right now though. The heater doesn't work.
Tomorrow I'm gonna work on the heater core and oil leaks. Also I'm going to wire a manual fan switch. My PC won't let me flash a tune to the PCM. I've got a 160 T-stat in. Hopefully a switch will get me by until I can get it tuned.
Sent from my iPhone using TapatalkBright Teal ’94 Z28 – K&N CAI – Speed Engineering LTs – Pacesetter ORY – Magnaflow Muff
Test my MPG Calculator https://docs.google.com/spreadsheets...it?usp=sharing
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09-29-2015, 03:54 AM #3"The Rock"
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- Offline
- Join Date
- Jul 2009
- Name
- Popo
- Vehicle
- 1996 Impala with the heart of the old camaro. 1993 Corvette..
- Location
- Shillington, Pennsylvania, United States
- Posts
- 61,345
Great write up man. To get the full potential of the colder thermostat u will need to lower the trigger temp for the fans.
As for it running hot in town, is ur air damn still in place under the nose of the car?
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1996 Camaro Z28: RIP 09/25/2016
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09-29-2015, 01:38 PM #4Lurker
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- Offline
- Join Date
- Sep 2015
- Name
- Caleb
- Vehicle
- '94 Bright Teal Z28 M6
- Location
- Lafayette IN
- Posts
- 132
Maintenance on my '94 z28 pic heavy
Did some more investigation on the oil leaks. Fuck me it's the intake again. To the left of the oil pressure sender where the gap between the head and block are. There is a crack where the head gasket does t go all the way out. It is leaking from that area.
Couldn't get a clean shot of it
Guess the good news is I can probably redo it in an hour know that I know what I'm doing.
I'll try torquing the bolts again first. I used a lot of the "right stuff" and put it all around the "ears" of the gasket. I cleaned everything with degreaser.
Sent from my iPhone using TapatalkLast edited by Mrmaroon; 09-29-2015 at 01:47 PM.
Bright Teal ’94 Z28 – K&N CAI – Speed Engineering LTs – Pacesetter ORY – Magnaflow Muff
Test my MPG Calculator https://docs.google.com/spreadsheets...it?usp=sharing
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09-29-2015, 01:49 PM #5Lurker
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- Offline
- Join Date
- Sep 2015
- Name
- Caleb
- Vehicle
- '94 Bright Teal Z28 M6
- Location
- Lafayette IN
- Posts
- 132
Bright Teal ’94 Z28 – K&N CAI – Speed Engineering LTs – Pacesetter ORY – Magnaflow Muff
Test my MPG Calculator https://docs.google.com/spreadsheets...it?usp=sharing
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09-29-2015, 02:16 PM #6Xtreme Member
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- Offline
- Join Date
- Mar 2015
- Name
- Dan Dalessandro
- Vehicle
- 1997 Camaro Z28
- Posts
- 2,211
I bought heater hoses for my 97 from gmpartsdirect. I think it was $150? I would drain the block. Pull out the knock sensor and the drain plug. Shbox.com has the locations for those. That's probably the original dexcool coolant and you can't mix it with other coolants otherwise it turns into a hard substance. Honestly, I blame all my cooling troubles on myself. I half-assed it hard and almost paid big for it. 99% of cooling system is new because I got cheap lol.
My car runs just past the 160 mark with my 160 thermostat. When I'm putting around school, I flip on low speed fans.
Sent from my Galaxy S6.
14.307@98.21, 2.155 60'
97 Z28, M6 with stuff done to it. SHOOTING FOR 12s IN A BOLT ON LT1 BOYS
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09-29-2015, 07:22 PM #7Lurker
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- Offline
- Join Date
- Sep 2015
- Name
- Caleb
- Vehicle
- '94 Bright Teal Z28 M6
- Location
- Lafayette IN
- Posts
- 132
Ok guys today I have been working on my manual fan switch. I am electrically challenged. I'm going off the shbox.com obd1 wiring diagram and I'm not going to use LED's
Here's what I've done so far.
I've spliced my green wire to the green and blue wires. My plug doesn't look like shbox's. I only have one not two.
Next I removed the PCM and routed the wires through the firewall grommet. I had to cut a little hole in the rubber for the wires.
Now inside the car! I removed the glove box by taking out the bottom 3 hinge screws and bending the inside plastic of the box to remove it.
Next I took off the passenger side panel piece.
After it was removed I found my wires.
I routed them under the glove box and into the cassette tray for now. It's an easy spot to work with right now.
Here is where I am stuck. . . I don't know much about electronics, so this probably sounds dumb - which wire would be the ground ? I'm guessing it's black. I found a nice thick black wire by the silver box to the right of the glove box. Would this one work?
Also I grabbed the wrong switch. It's a DPDT switch, but it doesn't stay on by itself, you have to hold it there. I'll have to buy the right one some other time, but this one will work for now.
Sent from my iPhone using TapatalkBright Teal ’94 Z28 – K&N CAI – Speed Engineering LTs – Pacesetter ORY – Magnaflow Muff
Test my MPG Calculator https://docs.google.com/spreadsheets...it?usp=sharing
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09-29-2015, 09:20 PM #8Lurker
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- Offline
- Join Date
- Sep 2015
- Name
- Caleb
- Vehicle
- '94 Bright Teal Z28 M6
- Location
- Lafayette IN
- Posts
- 132
Holy cow it worked on the first try! I stuck my ground in the cigarette lighter to test it. Here is how I wired the switch.
The left two and bottom right are grounds. The top middle is high (blue) and bottom is low.
When it is on high do both fans run? It seems like I should run both high and low to one and just low on the other. My fans only have one speed I think.
Sent from my iPhone using TapatalkBright Teal ’94 Z28 – K&N CAI – Speed Engineering LTs – Pacesetter ORY – Magnaflow Muff
Test my MPG Calculator https://docs.google.com/spreadsheets...it?usp=sharing
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09-29-2015, 09:59 PM #9Xtreme Member
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- Offline
- Join Date
- Mar 2015
- Name
- Dan Dalessandro
- Vehicle
- 1997 Camaro Z28
- Posts
- 2,211
With the 94, if I remember... it's one fan on low, both fans on high.
Sent from my Galaxy S6.
14.307@98.21, 2.155 60'
97 Z28, M6 with stuff done to it. SHOOTING FOR 12s IN A BOLT ON LT1 BOYS
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09-29-2015, 10:15 PM #10Xtreme Member
- Status
- Offline
- Join Date
- Nov 2012
- Name
- Shaun
- Vehicle
- 1994 Formula
- Location
- Phillipsburg NJ
- Posts
- 7,249
Supporting Member2021 Charger Scat 392
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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