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I have 1993 lt1 camaro eng quits once it hits oper temp replaced pump filter coil batt and optispark once it cools it starts again but repeats shuts down again

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Thermostat may be stuck closed.

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LT1 93 has little faults to accererate hard from low rpm, like "doubts". Keeping on high rpm acceleration is ok. Only 6k miles.

Very hard to say what is wrong, do you have any kind of car history like if the waterpump was leaking or replaced? If so like my 1994 vette the pump is in the front of opti-spark 99.9 percent of the time the water will ruin the opti. I have replacement mine many times, mainly because of the waterpump. if you replace pump you Must change opti-spark, its right there in open after you take out will save you 4 hours labor time.

Nov 18, 2013 | 1993 Chevrolet Corvette

1 Answer

My 95 5.7L LT1 engine is starting to overheat. looking for a diagram to show me where the water pump is.

the water pump is on the front of the engine .. i beleive it is behind the distributor on those... those lt1"s have alot of head gasket issues too which would cause overheating

Jul 29, 2012 | 1995 Chevrolet Camaro

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R&r 5.7 distripter in 1996 camaro

Replacing the Optispark Distributor is a real pain in this year and the LT1 engine.
Here are the steps
Remove accessory drive belt
Remove air intake hose to engine
Remove Radiator fans (unplug wiring harness first)
Drain the cooling system
Remove water pump (unplug water temp sensor first, tie hoses back out the way)
Remove Crankshaft balancer (you can get around the hub).
Remove Optispark cap and the rotor, the remove the bolts that hold the distributor to the block

Reverse to assemble.

Jul 21, 2011 | 1996 Chevrolet Camaro

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the icm, coil, and crank sensor all read off the opti. Chances are you have a bad optispark (distributor). I just went thru the same issue and found it to be the problem.

check your fuel pressure as well, you may have anissue with your fuel pump and or relay

Sep 21, 2010 | 1997 Chevrolet Camaro

3 Answers

My '93 camaro z28 was overheating. I had the water pump replaced and it no longer overheats, however it is reluctant to start and runs very poorly when it does run. It ran OK before the new water pump,...

If that was the only repair then it was a coincidence. The only thing that is related to what you did is the engine coolant temp. sensor (ECT), but you need a scan tool to look at parameters and run some tests. Being that its a "93" I would do a compression test, look a fuel pressure, check the maintenance history, When was the last complete tune-up done, maybe do an exhaust back pressure test, IAC, and EGR. Well good-luck.

Jun 11, 2009 | 1993 Chevrolet Camaro

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1995 camaro z28 keeps loosing fire

it might be the optispark harness starts and runs good. once u turn it off its hard to turn back on?

Mar 30, 2009 | 1995 Chevrolet Camaro

3 Answers

Car stops while driving

Your car has a bad optispark. You'll need to replace the unit. My 93 did the exact samer thing. It ran like a champ when it was cold, but the second it warmed up it died. THe one thing you can try is to let it just run, this will build up heat in the optispark unit and help to dry up the moisture that has built up inside it. It may help for the short term, however the problem is that by the time this actually starts happening the unit is already finished. THe other thing I noticed with mine was it was especially bad after a rain fall.....Hope this helps.

Feb 23, 2009 | 1993 Pontiac Firebird

1 Answer

Plug wire burn spots, spark plugs fouling, loss of power, misfire

optispark distributor fails. go to and search optispark. it'll pop right up

Nov 18, 2008 | 1996 Chevrolet Camaro

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