86 Z28 misc problems - Team Camaro Tech
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post #1 of 10 (permalink) Old Jul 12th, 04, 06:50 PM Thread Starter
 
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I just bought my first Camaro and am having trouble finding the source of it overheating. I've checked the coolant mixture, thermostat, and flushed the radiator and it still overheats. And I was also wondering if anyone knows of a trick to open the truck/hatch because my key won't turn, the inside handle doesn't work, nor does the electrical release, ahhhhh! I got it cheap and it runs but I really want it in perfect order.
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post #2 of 10 (permalink) Old Jul 13th, 04, 01:42 AM
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Welcome to the Club! One t6hing you might check is to clean the external radiator fins and the condenser fins. A good spraying of 409 or similiar soap and a good rinse will help.

Also, check to make sure the fan comes on. At least with A/C selected.
Radiator tubes should be clean inside when cap is removed.
Check for no bubbles in the coolant. If bubbles appear while running, head gaskets need changing or a cracked head.
Radiator cap should build pressure as coolant heats up. A tight upper radiator hose will be a good telltale sign.
If engine has been bored oversize, coolant will run alittle hotter.

These engines run alittle hotter than older cars. They run around 200-210*F. Rad fan is controlled by ECM. Sometimes, its too late for it to come on.

A good third gen source is www.thirdgen.org

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post #3 of 10 (permalink) Old Jul 13th, 04, 04:14 AM
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Pick up a haynes or chilton manual ... It is a good investment ...about $15 or so ... Lot's of good basic information plus wiring diagrams and pretty decent illustrations ... Also, for the trunk release, check fuses ...Additionally, climb in the back and lookt at the latching area to make sure that something is "pinched" in the mechanism making it harder to operate ....
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post #4 of 10 (permalink) Old Jul 13th, 04, 04:47 AM
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When does it over heat? idling, driving in traffic, on the freeway? My '86 El Camino (305) runs at 210 and spikes higher but never goes in the red on the gauge. The orig owner said it ran that way from day one so I've never really worried about it.

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post #5 of 10 (permalink) Old Jul 13th, 04, 11:25 AM
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The 3rd generation of Camaros are known for overheating. I believe it has to do with air flow. Basic cooling system maintenance like flushing the system and having the radiator cleaned are good things to do. Make sure the fans work - one comes on when commanded by the computer, the other comes on when the engine reaches 200 and some degrees. In short, make sure everything is as good as it can be. Even then you may find it wants to overheat on a hot day with the AC on in traffic.

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post #6 of 10 (permalink) Old Jul 13th, 04, 02:25 PM
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my friends did the same thing...make sure the fan works...turn on your ac and you should hear the fan

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post #7 of 10 (permalink) Old Jul 13th, 04, 07:06 PM Thread Starter
 
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Well DjD, when we got it to my house and turned it off we heard a noise and popped the hood and the radiator overflow was boiling
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post #8 of 10 (permalink) Old Jul 14th, 04, 04:32 AM
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Could be as simple as a bad pressure cap.

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post #9 of 10 (permalink) Old Jul 14th, 04, 05:43 AM
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Something else to check for (not related to overheating) is a cracked frame by the steering box. They have no support past the engine mounts between the frame rails and are prone to cracking. My 85 did this, and you could see the frame twist as the steering wheel was turned.

My guess on the hatch would be to find a way to get the inside panels off and try to get the hatch up that way. You may try spraying some lubricant in the lock and see if one of the wafers is hanging up not allowing it to turn.


Good luck with the car though, I wish I still had my 85 to build for my son.
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post #10 of 10 (permalink) Old Jul 15th, 04, 03:29 PM Thread Starter
 
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We're pretty sure we got the overheating fixed, and I got the panel off and hotwired the electronic latch and opened the hatch. And was wondering if anyone else has had valve guides go out, my car puts out alot of smoke when I start it and puts out little spurts of smoke here and there. I checked the frame by the steering box and it is fine so thanks for the info.
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