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Old 08-08-2002, 01:46 PM   #1
manualman
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Default Hard Starting

Forgive me friends, it's not the Saturn. It's my wife's car: an Olds Intrigue. I just had a plugged injector replaced. Car now runs fine, idles fine, accelerates fine.

But it doesn't like to start. It turns over normally, catches quickly, revs up to 1200-1300 rpms, the drops down towards the normal 700-800 rpms, but keeps dropping till it dies. If I tap the gas, it revs higher, then drops down towards normal, stumbles a little, then recovers and settles down to idle perfectly.

A fuel injected car should need no gas pedal action at startup. So what's wrong?

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Old 08-08-2002, 02:21 PM   #2
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Because of the clogged injectors there may be a problem with the fuel filter also. The other issue is that the PCM needs to be reset becayse the BLM's have been learning how to control the car with a bad injector and not it's working again causing a weird condition with the PCM. Either remove the negative battery cable for 20 minutes or have the PCM BLM's reset at the dealer.

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-Adam Chant
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Old 08-08-2002, 04:43 PM   #3
manualman
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Fuel filter is practically new: 8,000 miles on it. Mechanic did pull the battery cable to reset the PCM (lost all radio presets, anyway).

I just got off the phone with him. He said he found a ruptured diaphragm in the fuel pressure regular. Essentially it allowed the engine to flood after the engine was turned off.

That's over my head, how's it sound to you guys?

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Old 08-08-2002, 09:46 PM   #4
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My thinking is that the rupturing reg diapragm would be more likely to cause flooding or excess fuel when the engine is running.
On the idle try cleaning the Idle Air Control valve and throttle body.

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Old 08-08-2002, 11:05 PM   #5
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Your mechanic's find is probably the problem but his explaination is incorrect. The faulty FPR is allowing the fuel system to depressurize and partially fill with air when the engine/fuel pump are shut down...this would make for harder starting and a brief period of rough idle until the systems fully pressurizes and purges itself of air.

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Old 08-09-2002, 09:22 AM   #6
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Thanks guys.

Guess it's just my bad luck to get a plugged injector, then this all within a week.

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