Buying an optispark
Thread Starter
Racer
Joined: Feb 2002
Posts: 455
Likes: 0
From: Fraser MI
Buying an optispark
I looked up the optispark for a '94 vette on gmpartsdirect.com and it returned part #1104032 for $277.16 shipped. Is this the right part? I thought they were over $300 for just the part? What else will I need to buy to make this repair?
My car has 41k on it, and has started to skip at low rpm under load :mad so I think it's time for a new opti...unless anyone else can tell me what else might be the problem...
Thanks...
My car has 41k on it, and has started to skip at low rpm under load :mad so I think it's time for a new opti...unless anyone else can tell me what else might be the problem...
Thanks...
Burning Brakes
Joined: Nov 2000
Posts: 1,117
Likes: 0
From: DFW TX
Re: Buying an optispark (konroh)
My car has 41k on it, and has started to skip at low rpm under load Thanks...
Burning Brakes
Joined: Apr 2002
Posts: 934
Likes: 0
From: MO
Re: Buying an optispark (konroh)
That sounds like the newer style opti price. But it not thats a good price.
Also you may want to check you plugs/plug wires first. If you have a timing light you can hook it to each wire one at a time and watch for eratic flashes.
This is how I fixed a miss in my car once when the dealer couldn't even find it! It was a wire burnt down by the boot. Changed it and ran great. I too thought it was the opti then but mine ended up lasting to 72k. Also
check your coil wire they can rub on the water pump sometimes and cause
a miss.
Goodluck!
Also you may want to check you plugs/plug wires first. If you have a timing light you can hook it to each wire one at a time and watch for eratic flashes.
This is how I fixed a miss in my car once when the dealer couldn't even find it! It was a wire burnt down by the boot. Changed it and ran great. I too thought it was the opti then but mine ended up lasting to 72k. Also
check your coil wire they can rub on the water pump sometimes and cause
a miss.
Goodluck!
Burning Brakes
Joined: Apr 2002
Posts: 934
Likes: 0
From: MO
Re: Buying an optispark (92corvette)
My car has 41k on it, and has started to skip at low rpm under load Thanks...
That's the way mine acted when the opti went bad. I also understand that the 94-96 opti costs less than 92-93.
That's the way mine acted when the opti went bad. I also understand that the 94-96 opti costs less than 92-93.
92-94 vettes are the same.
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: Buying an optispark (konroh)
If the miss is very regular then it's probably not the opti. Do Plugs and wires first.
The opti for a 94 is #10457702. This is a complete unit.
I just bought one from Sam Smith (Las Vegas - 800-395-1440) $270.00 + $4.50 shipping to CA.
Be sure to get the waterpump gaskets as well. You'll need some Hi-Temp RTV to reseal the Opti (seals are one of the weak points).
The opti for a 94 is #10457702. This is a complete unit.
I just bought one from Sam Smith (Las Vegas - 800-395-1440) $270.00 + $4.50 shipping to CA.
Be sure to get the waterpump gaskets as well. You'll need some Hi-Temp RTV to reseal the Opti (seals are one of the weak points).
Burning Brakes
Joined: Nov 2000
Posts: 1,117
Likes: 0
From: DFW TX
Re: Buying an optispark (James94LT1)
Actually its 95-96 on the vettes and f-body, I believe the Impala changed sometime in 94 to the newer one. 92-94 vettes are the same.
Thread Starter
Racer
Joined: Feb 2002
Posts: 455
Likes: 0
From: Fraser MI
Re: Buying an optispark (John Row)
the miss is somewhat regular...i noticed that it really occurs often when the engine is very hot, like in traffic the oil will get as high as ~225 and it will start missing at low rpms, below about 2k...
i will check out the wires and plugs this weekend, and also try to get a look at the opti if i can get to it...
i will check out the wires and plugs this weekend, and also try to get a look at the opti if i can get to it...
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: Buying an optispark (konroh)
Sounds like it's acting a bit like mine. Mine is very intermittent and the hotter the engine compartment gets the more it misses. At idle it will jump 500 rpm every 5-10 seconds.
If it's missing on the highway and I mash the gas, after an initial stutter it will take off and run smooth for a couple of minutes.
Mine has been getting worse. 6 weeks ago we noticed the odd idle.
Just got the new opti yesterday, next Monday the car goes under the knife!
If it's missing on the highway and I mash the gas, after an initial stutter it will take off and run smooth for a couple of minutes.
Mine has been getting worse. 6 weeks ago we noticed the odd idle.
Just got the new opti yesterday, next Monday the car goes under the knife!
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Thread Starter
Racer
Joined: Feb 2002
Posts: 455
Likes: 0
From: Fraser MI
Re: Buying an optispark (John Row)
John Row,
So you haven't put the new one in yet? please let me know if that fixes your problem...i am not too happy about buying one already, i just got the car a few months ago...oh well
So you haven't put the new one in yet? please let me know if that fixes your problem...i am not too happy about buying one already, i just got the car a few months ago...oh well
Thread Starter
Racer
Joined: Feb 2002
Posts: 455
Likes: 0
From: Fraser MI
Re: Buying an optispark (konroh)
What would I need to upgrade my car to the new style opti? Just a timing chain cover or more? I can get an opti from a '95 for cheap so I want to know what else i would have to buy (part numbers if you know them)
thanks
thanks
Le Mans Master
Joined: Apr 2001
Posts: 7,410
Likes: 252
From: Little Elm TX
Re: Buying an optispark (Ramrod92)
$499 at More Performance including newer stlye opti. :cheers:
'95-'96 Opti $242.52
Opti Vent Kit $ 8.46
Opti Harness Kit $ 73.08
Timing Cover '95 $ 66.00
______
Total $390.06
:D :cheers:
Le Mans Master
Joined: Apr 2001
Posts: 7,410
Likes: 252
From: Little Elm TX
Re: Buying an optispark (LT5FIRE)
Whats the part number for the opti harness kit?
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: Buying an optispark (konroh)
One other thing on the conversion. The connector to the PCM is different, but it is a simple change. One solution was to cut the new connector and solder the old connector. Another solution was to push the pins out of both connectors to remove the plug, then push the new pins into the old connector. Just make sure the wires match.
Le Mans Master
Joined: Apr 2001
Posts: 7,410
Likes: 252
From: Little Elm TX
Re: Buying an optispark (John Row)
One other thing on the conversion. The connector to the PCM is different, but it is a simple change. One solution was to cut the new connector and solder the old connector. Another solution was to push the pins out of both connectors to remove the plug, then push the new pins into the old connector. Just make sure the wires match.
Thread Starter
Racer
Joined: Feb 2002
Posts: 455
Likes: 0
From: Fraser MI
Re: Buying an optispark (R94 LT 1)
is the waterpump the same after the conversion? how long do the waterpumps usually last? I have 41k on my vette...should i change the pump at the same time as the opti? how much is a pump from jeff?
thanks for all the help guys!!!
thanks for all the help guys!!!
Drifting
Joined: Jul 2001
Posts: 1,683
Likes: 1
From: NY
Re: Buying an optispark (konroh)
A word to the wise....Change Your Water Pump At The Same Time You Do An Opti Change. The cost of a new GM water pump from Jeff is $155.00 - I have one from Jeff on my car right now, it went on this past Friday. The reason I so strongly advise changing the pump at the same time is that I only have 25,000 miles on my car and when the original pump was removed it was shot. Nearly half of the bearings were gone. The pump gave me NO indication that it was about to crap out on me - no noise, no overheating issues, nothing. Save yourself a big headache...change your water pump as well, before it leaks all over your brand new Opti.
is the waterpump the same after the conversion? how long do the waterpumps usually last? I have 41k on my vette...should i change the pump at the same time as the opti? how much is a pump from jeff?
thanks for all the help guys!!!
thanks for all the help guys!!!