RE: 1998 Dak loses power while driving

From: Bernd D. Ratsch (bernd@dodgetrucks.org)
Date: Sun Feb 15 2009 - 19:12:47 EST


Yup...sounds like a cat to me too. How much exhaust flow is coming out of
the tailpipe when the engine stalls and restarts?

- Bernd

-----Original Message-----
From: Rick Barnes [mailto:rsb7424@gmail.com]
Sent: Sunday, February 15, 2009 5:26 PM
To: dakota-truck@dakota-truck.net
Subject: Re: DML: 1998 Dak loses power while driving

is the engine shutting off or just gradually losing power...if it just
loses power, could be a clogged cat.

Rascal

On Sun, Feb 15, 2009 at 3:59 PM, Geoffrey Hausheer
<dakota1998@phracturedblue.com> wrote:
>
> I haven't been on this list for about 10 years, but it's interesting I
> still see many of the same names here as back then. Recently my 1998
> 5.2L 4x4 started acting up, and I thought I'd see if anyone here had
> any ideas. I saw the recent thread on 'Shut Downs' which sounds
> similar to my issue, though not necessarily the same.
>
> When driving, my truck will occasionally lose power completely. As in
> Jamie's case, it feels like the engine just turned off. If I'm
> moving, then I can get it going my downshifting (just pushing in the
> clutch and releasing it won't do it). If I'm stopped, turning the key
> off then starting the engine again will resolve it. The gauges
> continue to work normally, and no lights flash or anything. Radio and
> lights work fine even while the engine is in this 'off' state, and
> there's no noticable flickering or glitches when it happens.
>
> It doesn't normally trigger a code, though I've gotten a few every
> once in a while.
>
> The last set I pulled were:
> P0505 IACS
> P0351 ICAP/SC
> P0113 IATS1CHI
> (though this was after I accidentally left the dome light on for a
> week which killed my battery, and they could be related to that). My
> intake air sensor is also not in the air-stream, and frequently
> triggers a code, so the P0113 is likely not related)
>
>
> I also get failing $06 Codes:
> $11 O2S11SWCT Value = 12.0 (Min 56.0)
> $15 CAT11PRC Value = 0.0 (Min 3.0)
>
> As I said, I don't get codes every time the engine stalls like this.
> At the moment, I can't go more than ~20mins without this happening,
> which has made the truck too unreliable for me to drive it much.
>
> I'm not sure it's related, but for the past several years, I've had a
> very rare issue where I'd get the same issue when accelerating, but
> simply taking my foot off the gas would be sufficient to get the
> engine going again, but the current issue happens much more
> frequently, and is significantly more annoying to deal with.
>
> If it is a loose wire/bad connection, it'll be extremely frustrating
> to find, so I thought I'd see what other sensors could trigger this
> condition.
> I don't think a bad TPS would cause this condition, but what about a
> bad MAP sensor?
> The service manual is next to useless for debugging these issues; is
> the power-train manual more helpful?
>
> Thanks,
> .Geoff
>
>



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