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Car Forum / Jeep / June 2005Troubles with OBD II - HURRY
I am having a code P0302 from the OBD II system, this means that there is trouble with the #2 plug. The car runs like it is miss firing, it kind of pops and sputters like a valve. Trusting OBD II as I do, I tested the plug wires, and the #2 wire seems to be open. The #1, 3, and 4 have resistance readings as follows, 10.0, 7.6, and 5.5 k ohms respectively. If the resistance is a function of the length and the #1 is double the length of #4, then the resistance readings are in line. I would expect #2 to fall in between 1 & 3, or about 9. Before I go out and buy new wires, is my test valid? If you are reading a straight open that is all you need regardless of what a particular resistance reading is on other wires. Could it be just a plug, change the plugs.  SignatureCoasty SEMPAR PARATUS (ALWAYS READY) Remove The SPOOGE To Reply >I am having a code P0302 from the OBD II system, this means that there is >trouble with the #2 plug. The car runs like it is miss firing, it kind of [quoted text clipped - 7 lines] > > Before I go out and buy new wires, is my test valid? Plugs are OK, I think. My brother in law replaced them two weeks ago because the engine was miss firing. The boneheads at AutoZone told him that if the Check light was off, there were no codes to gather, so we couldn't see if we were even working on the right stuff. I'm off to the store to get a new set of wires. This is one of those projects where the expensive ones are the right ones, isn't it? > If you are reading a straight open that is all you need regardless of what > a particular resistance reading is on other wires. Could it be just a [quoted text clipped - 12 lines] >> >> Before I go out and buy new wires, is my test valid? Over all the years I have been buying wires, the OEM ones from the dealer are the best in my opinion. I am running them on both of my Jeeps. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's > Plugs are OK, I think. My brother in law replaced them two weeks ago because > the engine was miss firing. The boneheads at AutoZone told him that if the [quoted text clipped - 26 lines] > >> > >> Before I go out and buy new wires, is my test valid? Hey Mikes back.... Tell us of your adventures Mike!!! lol > Over all the years I have been buying wires, the OEM ones from the > dealer are the best in my opinion. [quoted text clipped - 44 lines] >> >> >> >> Before I go out and buy new wires, is my test valid? My wife and I have had a few 'adventures' lately, that's for sure.... :-) Mike > Hey Mikes back.... > [quoted text clipped - 48 lines] > >> >> > >> >> Before I go out and buy new wires, is my test valid? The trouble is, the dealership is closed and it's my friend's car stuck in my garage. I bought some silicon wires that are pretty nearly the same diameter as the factory wires, and they solved the trouble and they have a life time warranty. I have to agree that this is one of the few places where it pays to buy parts at the dealership though. > Over all the years I have been buying wires, the OEM ones from the > dealer are the best in my opinion. [quoted text clipped - 44 lines] >> >> >> >> Before I go out and buy new wires, is my test valid? Your test is fine Jeff, I'd suspect a connector has come off where it connects to the carbon fiber conductor. I'd install another set of OE plug wires, most wires sold by Autozone etc. are pretty crappy quality. Especially avoid those advertising "low resistance" which will introduce electrical noise into your CB and AM radio. Jerry > I am having a code P0302 from the OBD II system, this means that there > is trouble with the #2 plug. The car runs like it is miss firing, it [quoted text clipped - 8 lines] > > Before I go out and buy new wires, is my test valid? SignatureJerry Bransford PP-ASEL N6TAY See the Geezer Jeep at http://members.cox.net/jerrypb/ Hey Jerry, send me your phone number to jstrickland at ez2 dot net. > Your test is fine Jeff, I'd suspect a connector has come off where it > connects to the carbon fiber conductor. I'd install another set of OE [quoted text clipped - 16 lines] >> >> Before I go out and buy new wires, is my test valid? Yes, in the old days we replaced at one thousand volt loss per foot. God Bless America, ßill O|||||||O mailto:LWHughes3rd@aol.com http://www.billhughes.com/ > I am having a code P0302 from the OBD II system, this means that there is > trouble with the #2 plug. The car runs like it is miss firing, it kind of [quoted text clipped - 7 lines] > > Before I go out and buy new wires, is my test valid? It's fixed. Sorta. I bought a set of wires from AutoZone because the dealership is closed by now. The problem is solved and the code reader reset the code and it didn't come back. The resistance of the new wires was considerably more uniform than in the old wires. I don't know if this is because the old wires are made to a different standard, or they were close to failure among the entire set. >I am having a code P0302 from the OBD II system, this means that there is >trouble with the #2 plug. The car runs like it is miss firing, it kind of [quoted text clipped - 7 lines] > > Before I go out and buy new wires, is my test valid? yes > I am having a code P0302 from the OBD II system, this means that there is > trouble with the #2 plug. The car runs like it is miss firing, it kind of [quoted text clipped - 7 lines] > > Before I go out and buy new wires, is my test valid? Thanks. I installed new wires - three days ago - and the motor runs like new. > yes > [quoted text clipped - 9 lines] > > > > Before I go out and buy new wires, is my test valid? Cool. You'll find your radios will work like new, too. God Bless America, ßill O|||||||O mailto:LWHughes3rd@aol.com http://www.billhughes.com/ > Thanks. I installed new wires - three days ago - and the motor runs like > new. |
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