OK, well if it turns over but does not start we know that the immobilizer does not have a defective starter kill, [if it has starter kill] it could be a defective ign. kill.
To troubleshoot what is wrong you will need a multimeter or at least a test light.
You can start by just using your ears to see/hear if it’s a fuel problem.
When you first turn on the ign. to the run position, [not start] you should hear the PGM-FI Main Relay “click” on, [it is located under dash, drivers side, just to the left of steering column] you will also hear the fuel pump “prime” the fuel system, [raise fuel pressure to operational level] the pump will only run for a few sec., then you will hear the PGM-FI Main Relay “click” off and the fuel pump will stop running.
So the next time your car will not start turn ign. switch to run and listen for the fuel pump, if you can’t hear the pump priming, the fuel pump may be going or it could be the PGM-FI Main Relay.
To test which one it is, a “smack test” can be done, remove rear seat, [bottom] remove fuel tank access panel, [it will expose fuel pump access panel]. remove lower dash trim, [drivers side] and locate PGM-FI Main Relay, it looks like this… http://cgi.ebay.com/ebaymotors/acura-integra-90-93-main-fuel-relay-main-relay-RZ-0067_W0QQcmdZViewItemQQcategoryZ33557QQihZ003QQitemZ130051208389QQrdZ1QQsspagenameZWDVW#ebayphotohosting
The next time car will not start, leave ign. switch in run and “smack” the relay, if the fuel pump still does not come on, “smack” the fuel pump access panel.
If the fuel pump starts priming when you smack the relay, you will need a new one, if the fuel pump starts priming when you smack the fuel pump access panel you need a new fuel pump.
Both the PGM-FI Main Relay and the fuel pump are a common “intermittent” no start problem, that is to say they hardly ever just stop working but become increasingly intermittent, until they finally fail completely.
I drove my 94LS for a month with a failing relay, having to “smack” it more often as the time went by, and I drove the car to and from work for a weak with the fuel pump failing, had the back seat out and access panel off and had a long screw driver on pass. seat so I could reach around and “smack” the fuel pump access panel.
Although this may not be the problem it is the most common and the one I would look at first.
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