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09-25-2006, 05:02 PM | #1 | |
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'98 no start, SES on, 5 DTC's
My 98 intrigue, 150,000 miles, will not start. Codes are p0306, po306, p0171, po404, and p1404. It was running fine, I stopped to put oil in it, then drove about 3 miles. Stopped for a few minutes, started up kinda rough, drove a couple more miles running rough, as if it were getting no gas, and losing power then died. Would not start after that. Help!! I have researched all these codes and symptoms and haven't been able to find the problem and I'm afraid I will replace parts not needing to be replaced.
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09-25-2006, 05:52 PM | #2 | |
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Re: '98 no start, SES on, 5 DTC's
P0306 Code - Cylinder #6 Misfire
P0171 System Too Lean (Bank 1) P0404 Exhaust Gas Recirculation(EGR) Circuit Range/Performance P1404 is the EGR Pintle Position Well, I really dont know where to begin, you might try cleaning the EGR valve? I just posted those for the benefit of everyone else
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09-25-2006, 08:23 PM | #3 | |
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Re: '98 no start, SES on, 5 DTC's
Would that cause the car to not start?
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09-25-2006, 09:06 PM | #4 | |
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Re: '98 no start, SES on, 5 DTC's
well see thats what I dont understand, because none of those things should make the car not start. EGR is an emissions thing, and the car should still run without it functioning properly.
I almost wonder if those problems arent just pure coincedence?
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2000 Oldsmobile Intrigue 3.5 DOHC V6 Mods: Fenderwell Intake, High-Flow cat, U-bend delete, 12-inch front rotors, GMPP handling kit, 20% tint, Pioneer front and rear speakers, Eclipse HU, cleared corners 1986 Jeep Cherokee 2.8 V6 |
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09-25-2006, 09:25 PM | #5 | |
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Re: '98 no start, SES on, 5 DTC's
I was thinking maybe it is the crankshaft sensor? Not being able to start it makes it hard to test some things and I really don't want to replace a bunch of unbroken parts or sensors. Wouldn't there be a code if it were the crankshaft sensor? Also, I read there is some sort of fault in the error codes regarding EGR's on this particular GM engine. Anyone ever hear of this?
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09-26-2006, 07:28 AM | #6 | |
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Re: '98 no start, SES on, 5 DTC's
How old is the fuel filter? Best thing to do is check fuel pressure and make sure it is in specs and the fuel pump is good. I'd do that before looking at an ignition problem like the crank sensor.
Based on the misfire DTCs and your symptoms it sounds like you ran out of gas or there is a fuel system problem. I've had misfires DTCs set in this situation. The EGR codes could be coincidental but should not cause starting problems or a stall.
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09-26-2006, 09:53 AM | #7 | |
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Re: '98 no start, SES on, 5 DTC's
There is fuel all the way up to the injectors and there was at least 1/2 tank of gas when this happened...
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09-26-2006, 10:15 AM | #8 | ||
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Re: '98 no start, SES on, 5 DTC's
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09-26-2006, 11:31 AM | #9 | |
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Re: '98 no start, SES on, 5 DTC's
That will cause it to not start also? I just want the darn thing to start!!! :o)
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09-26-2006, 02:49 PM | #10 | |
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Re: '98 no start, SES on, 5 DTC's
Are you getting spark & what engine is it?
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09-26-2006, 03:21 PM | #11 | ||
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Re: '98 no start, SES on, 5 DTC's
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09-26-2006, 03:25 PM | #12 | |
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Re: '98 no start, SES on, 5 DTC's
Ya know, I do not have the 3800 engine, and have done very little with my 3.5L. However, on my other vehicles I do know they would not idle and therefore would probably start with the EGR valve open. So you might look at that, i.e. EGR valve stuck open. You should be able to put a straw or piece of hose over the vacuum line on the egr, suck on it and make the valve open and close as you pull and then release the suction. If it is operating, try leaving the vacuum line off of the egr and put a pencil or something else in the end of the vacuum line to seal it and see if the car will run. If that should work, I would suspect the "egr valve controller" - whatever GM calls it. On the later Fords it is the DPFE sensor. I would suspect that it is sending an open signal at the wrong time perhaps because of the 1404 code which suggests (I am just thinking out loud here, no expert) that egr valve position information to the computer is bogus, or unavailable.
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09-26-2006, 03:51 PM | #13 | ||
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Re: '98 no start, SES on, 5 DTC's
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09-26-2006, 04:58 PM | #14 | ||
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Re: '98 no start, SES on, 5 DTC's
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09-26-2006, 05:04 PM | #15 | |
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Re: '98 no start, SES on, 5 DTC's
I have not yet done the fuel pressure test. I don't have a gauge. Will it be sufficient to do the carb cleaner thing? or do i need to get a gauge?
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