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Search function. You'll find everything you need. Upper right hand side, click the three dots, "advanced search" - > search in "engine problems / maintenance and put in keywords "opti start"
 

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What brand did you install? Pretty much every parts store opti out there is a piece of crap that will fail quickly.
 

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....any suggestions
Yes, depending on your search abilities and willingness to learn, about 8-16 hours of post #2 broken up into digestible sessions of course. It's all in there (here). And search further 4-8 hours on content of post #3.

Also, given it's a 25-year old ignition system in production for just 5 years, and for just one major manufacturer, there's a 135% chance the mechanic performing installation has either NOT retained memory of (or more likely never even ever experienced) an installation, to assure any one of about 15 things weren't done incorrectly, hastily or sloppily to cause the typical "soon failure" as yours.

Cliffs: things like weak aftermarket optical sensors, locktite, reverse torx, harness, clogged vent check valve, flimsy cap, greased viton seal, blueprint, and poor aftermarket assembly quality control and/or missing parts are soon to enter your vocabulary.

Note: Nearly all aftermarket optis are new, not rebuilt. No core is required, so if you are lucky, and the shop is that rare 1/2 of 1% total wacko honest to a fault, then they may respond favorably to your request for your original back. You won't understand just how lucky you've been to this point in your life if you succeed in getting that original opti back.

Hint: Since the shop obviously has to cover at least a part of eating a call-back to troubleshoot and install a replacement, don't be surprised they 'miraculously uncover' something else as at least contributory to the no-start. As your responsibility. To pay. For.

Suggestion: In furtherance of the above, if your ignition coil and/or ignition control module are more than 15 years old, then replace them immediately. And as a set. About an hour of search should do the trick for both part nos. and the R&R.

Werd Yo: Online parts houses consistently have better pricing than brick-n-mortar chains on electronics for some reason.
 
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