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2002 SE stalled last night.

 
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Pathfindork



Joined: 09 Apr 2018
Posts: 48

PostPosted: Sat Jul 21, 2018 4:20 pm    Post subject: 2002 SE stalled last night. Reply with quote

So driving home last night the engine cut out and the dash displayed the SES, battery, airbag, and brake lights. I initially thought alternator, but the thing is that the battery was still strong and was able to crank the engine and drive home stalling once or twice more before getting there. If the alternator went wouldnt the battery drain before stalling?

This morning it was fine, aside from the SES light being on. Alternator checked out fine except for P0102 and P1102 codes which indicate the MAF sensor. I cleaned the old one and ordered a replacement.

So would a bad MAF cause the engine to die and display all the lights you normally get from a bad alternator? I suppose those lights are on anyway if you turn the key but dont start it.
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smj999smj
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Joined: 22 Jan 2012
Posts: 4715
Location: Prospect, VA

PostPosted: Tue Jul 24, 2018 6:55 am    Post subject: Reply with quote

If the engine stalled, therefore "not running," then, "yes," the dash lights will come on. "Yes," the mass air flow sensor can cause the engine to stall. The codes indicate the ECM saw the problem as being related to the mass air flow sensor, which could very well be the sensor, itself, but could also be a harness open or short or a bad connection.
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2006 Pathfinder LE VQ40DE AWD, Nitto Dura Grappler P265/65R17, aftermarket radiator, Airlift 1000's, Bilstein HD rear shocks
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Pathfindork



Joined: 09 Apr 2018
Posts: 48

PostPosted: Wed Jul 25, 2018 2:25 pm    Post subject: Reply with quote

Ok. I replaced the MAF yesterday and this morning it would turn over then die unless I kept the gas on; under those conditions I drove to work just fine.

Leaving work same thing but it died on the side of the road and wouldn't even turn over. Battery is strong. Dashboard brake light stays on regardless of parking brake position; brake fluid is full. Prior to this idle was steady.

P0505, p0506, p1102

Someone suggested I need to leave the battery disconnected for an hour or two so will do that tonight.
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Pathfindork



Joined: 09 Apr 2018
Posts: 48

PostPosted: Thu Jul 26, 2018 1:23 am    Post subject: Reply with quote

So based on the burnt smell in the cabin I'm pretty sure my bad iACV (p0505/p0506) fried the ECU; going to pull it and open the cover to verify damage. Cranking it also burns out the 10A EICC2 fuse in the left-side fuse box. I'm sending that out for repair, there's a place in Atlanta which does that, so I don't need to get new keys and have it towed to a dealer to have everything reprogrammed.

Going to replace the IACV, will do a new o-ring with the IACV as well. Replacing the TPS is something I see recommended when discussing this issue; it's a cheap part so I don't mind.

From what I've read, removing the airbox, MAF, and intake tube/hose from the throttle body will give me good access to the IACV, is this correct?

Anything else I'm not considering?

2002 SE
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Pathfindork



Joined: 09 Apr 2018
Posts: 48

PostPosted: Sat Aug 04, 2018 4:10 pm    Post subject: Reply with quote

So everything is good again...well after replacing the IACV, TPS, and getting my ECU rebuilt by Circuit Board Medics. Next week Im going to have the coolant lines bypass the IACV so this issue "p0505 spiking the ECU" problem doesn't happen again.
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