Stumped
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Banned
Joined: Apr 2009
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From: MI USA
Thanks for the input everyone.
Can rule out cracked wire[s], just put on a new set weeks ago. Also observed in semi dark for any arcing, didn't see or hear any.
I tried simply resetting the PCM last time this happened, cleared the codes but symptoms remained, thats when I changed the plugs, and the problem went away for a couple weeks, only to return.
I dunno, guess I'm going to tinker around and see if I can find anything amiss, do a compression check, maybe reroute the wires per TSB instructions.
Can rule out cracked wire[s], just put on a new set weeks ago. Also observed in semi dark for any arcing, didn't see or hear any.
I tried simply resetting the PCM last time this happened, cleared the codes but symptoms remained, thats when I changed the plugs, and the problem went away for a couple weeks, only to return.
I dunno, guess I'm going to tinker around and see if I can find anything amiss, do a compression check, maybe reroute the wires per TSB instructions.
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From: Sioux Falls, SD
Grand Champion
Joined: Apr 2008
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From: Lee County, North Carolina
2. Ensure all your fiel injector connections from the wiring harness are tight. Ones without the little metal clips might be your problem. If they do not have the clips it will cause a missfire.
It could also be the cam sensor (disc underneath the distributor that has a connection to the wiring harness by the firewall). That controls the fuel injection firing.
--Dan
It could also be the cam sensor (disc underneath the distributor that has a connection to the wiring harness by the firewall). That controls the fuel injection firing.
--Dan
That camshaft position sensor is around 100$ at the stealership and I had to pay that because I didn't know that the parts stores call it a pickup coil or a distributor pickup. They're 37$ at o'reilleys and 50$ at advance.
I went to the parts stores asking for a camshaft position sensor and they just looked at me like they were retarded.
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From: MI USA
Highly unpredictable, the 4 times this has happened have been after running at least 10 miles or so, hard to say if temp/running time is a factor.
Since the misfire codes are in 3 specific cylinders, I'm leaning towards an injector/fuel rail problem, as has been suggested.
Since the misfire codes are in 3 specific cylinders, I'm leaning towards an injector/fuel rail problem, as has been suggested.
Grand Champion
Joined: Apr 2008
Posts: 7,055
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From: Lee County, North Carolina
unplug the injectors and test them (ohms) with a multi meter. The injectors are supposed to read between 12 and 15 ohms, but ideally they will read 12.4 ohms.
Last edited by Sheriff420; Mar 2, 2010 at 01:41 PM.
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From: MI USA
Test with power on/off ?
Champion
Joined: Jun 2004
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From: Ft Campbell, KY/TN
A couple of my injector wires are missing the clips and I just used zip ties to hold them on, seems to be working out just fine for me.
That camshaft position sensor is around 100$ at the stealership and I had to pay that because I didn't know that the parts stores call it a pickup coil or a distributor pickup. They're 37$ at o'reilleys and 50$ at advance.
I went to the parts stores asking for a camshaft position sensor and they just looked at me like they were retarded.
That camshaft position sensor is around 100$ at the stealership and I had to pay that because I didn't know that the parts stores call it a pickup coil or a distributor pickup. They're 37$ at o'reilleys and 50$ at advance.
I went to the parts stores asking for a camshaft position sensor and they just looked at me like they were retarded.
ALso the Haynes manual lists the cam position sensor as CPS and the crankshaft position sensor as CKP. THat was really mesing me up. ut I needed to replace BOTH so it made no difference.
As for the zip ties...never thought that could be a good fix. Glad they are working for you. Now I know what to do in case mine ever falter.
Grand Champion
Joined: Apr 2008
Posts: 7,055
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From: Lee County, North Carolina
power off. unplug the injector and test injector itself, not the wire. you can test the wire (back probe with it running i believe), but I would have to look up the voltage for it.
