Hmmm... good point, will check rite now.
just funny that it only does it sometimes... I had thought intake valve, runs smooth most of the time, and at idle.
thanks!
--- bernd@dodgetrucks.org wrote:
From: "Bernd D. Ratsch" <bernd@dodgetrucks.org>
To: <dakota-truck@dakota-truck.net>
Subject: DML: RE: misfire/backfire 02 Dakota 3.9
Date: Mon, 7 Dec 2009 05:18:51 -0600
P0172: Fuel Trim System Rich Bank 1 (Driver-Side)
P0301: Cylinder #1 Misfire (not necessarily an injector)
Definitely sounds like something is wrong with #1....i'd be checking compression and actual engine vacuum before replacing anything else. Compression, running compression, and vacuum will give you the direction to go.
- Bernd
-----Original Message-----
From: ttroidl@bluefrog.com [mailto:ttroidl@bluefrog.com]
Sent: Sunday, December 06, 2009 11:48 PM
To: dakota-truck@dakota-truck.net
Subject: DML: misfire/backfire 02 Dakota 3.9
Well, after replacing cap rotor, plugs, wires. it still pops thru the intake under load at low rpms, (sometimes) and for the 1st time the eng light came on!
Got po172
po301
misfire only cyl 1, new plug & changed out wire again still no go.
I did look down the TB for oil, pretty clean, very very little oil or anything.
I'm looking at injector next????
when it's popping in OD if I step on it hard it goes like a bat outta hell...
$72 for an injector, figured I'd post my findings befor I spend $$$ if it's not gonna help!
thanks much!
Tony.
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