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Old 05-13-2004, 08:48 AM   #1
LoveMySaturn
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Default Fuel injector? Fuel filter? Air filter?

All right, here we go again. I have a problem when under 3000 rpms. If i floor it just sitting, or while driving, it will sputter all the way up to 3k, then just go like it used to, with much more power, its a very noticable difference. Anyway, i was told that it was my valve cover gasket, so I replaced that. Same problem. Replaced ECTS and PCV at the same time as the valve cover (yesterday). Is this an injector problem? Fuel filter? I just put in new plugs a couple weeks ago. I'm thinking maybe clean out the egr, plug wires and maybe a new air filter. What should I check for to fix this problem? Thanks in advance.

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Old 05-13-2004, 09:33 AM   #2
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By the way, it does throw a SES light, but it flashes for about 15 seconds or so, then just shuts off. Hope this helps. I think it has to be on constantly for autozone to check it. not sure.

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Old 05-13-2004, 09:43 AM   #3
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Could be fuel delivery. Could be the EGR, and cleaning it out never hurts. Got a voltmeter? Could also be the MAP or O2 sensors. Valve cover gasket? I don't see how unless maybe wires are all gooped up with oil.

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Old 05-13-2004, 09:48 AM   #4
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What would I do with a voltmeter? My dad probably has one, he has a garage full of tools..

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Old 05-13-2004, 09:59 AM   #5
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You can check the voltage signals your sensors are sending the PCM(computer). Unfortunately, I'm not the one to ask how to do that. But I'm sure somebody here knows how.

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Old 05-13-2004, 11:05 AM   #6
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Based on what you've written, the most likely suspect is your plug wires. On the 's' cars they only last about 50'ooo miles before they start cross-firing to each other. We rarely ever have any injector problems, and the egr won't make it miss onhard acceleration. Good luck, let me know.

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Old 05-13-2004, 11:19 AM   #7
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Before you replace the wires, try cleaning the coil pack connectors. Also if you haven't done a fuel filter, you probably should.

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Old 05-13-2004, 12:28 PM   #8
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the coilpack is just on the other end of the plug wires right? if so, I already checked them, and there was no corrosion on them, but i cleaned them off with a rag anyway. i bought a egr valve gasket today, so I'll clean it off and see what happens. then i'll probably do the plug wires. How hard is a fuel filter change? It looks buried...

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Old 05-13-2004, 01:47 PM   #9
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A FLASHING SES light means basically ONLY one thing, a MISFIRE. Your either have a plugwire, coilpack or spark plug problem. It is also possible on far more rare instances for a very lean (stuck) injector to cause a misfire. Please tell me you installed CONVENTIONAL, NON PLATINUM PLUGS properly gapped to .040.

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Old 05-13-2004, 10:14 PM   #10
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A flashing SES light means that there is a catalyst damaging problem happening. The cause is normally a misfire caused by whatever. I would not drive the car very much/at all until you have the problem solved. If you had a leaking VC gasket did it leak into the plug wells? If so did you get carbon tracking on the plugs and wires?

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Old 05-13-2004, 11:50 PM   #11
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i put in what was in the car before, AC Delco plugs, gapped at .040. I changed the fuel filter, all kinds of black nasty gas in it, probably never changed. Still have the problem. Next step should be wires? They are bosch, so they have been changed in the past. The coilpacks look clean. Think they could still be the problem? And I have to drive this car. It is my only car...

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Old 05-13-2004, 11:56 PM   #12
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One thing I've been forgetting...It smells like gas out of the exhaust pipe. Any thoughts?

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Old 05-14-2004, 07:15 PM   #13
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So should I go out and buy some plug wires? Are the $25 ones from autozone ok?

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Old 05-14-2004, 09:14 PM   #14
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If you are smelling gas out of the tail pipe the the car is running way to rich. You said that you replaced the ECT sensor. Did you inspect the connector to see it there was any corrosion in it. If there is then the PCM could still be getting the wrong temp signal.
get the codes from the PCM. They will be stored.

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