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  #1  
Old 07-14-2013, 03:14 PM
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dodge 1998 5.2 igition timing of 30 degrees

So I replaced my dodge 1998 5.2 intake manifold gaskets, cap, rotor, wires and plugs and the timing while at an idle is advancing 15-30 degrees from what the computer says. Me and 2 friends have been trying to figure out why. The timing is not set with the distributor, but the computer. Its so bad that while accelerating cylinders 1,5,6 misfire. Anyone ever had this issue before? The cap and wires are where they should be according to the book. We have tried multiple combinations but same thing every time. Before this it would ping under load running 87 octane so its always been advanced, but it ran like a raped ape. Help guys! I don't whant this in to a dealer who is the only one who can reset the pcm.
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Old 07-14-2013, 03:29 PM
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Did you move the distributor at all? The dist still needs to be properly indexed for the computer to sense properly.
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Old 07-14-2013, 03:32 PM
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Quote:
Originally Posted by Patriot Services View Post
Did you move the distributor at all? The dist still needs to be properly indexed for the computer to sense properly.
No it has not moved. I've had the truck since 128,000 and its 190,000 now. Just the cap came off. Everything I've read said the indexing is for fuel inection timing, not igition (which does not make sense in my mind)
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Old 07-14-2013, 03:40 PM
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Any PCM codes?
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Old 07-14-2013, 03:45 PM
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Originally Posted by Patriot Services View Post
Any PCM codes?
Just the misfired cyliders and my speed sensor, which I have replaced and still is not working right. It bounced on and off
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Old 07-14-2013, 03:52 PM
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I think you have a PCM issue. That's a lot of miles on it. It learned its program off the old parts and probably took a set. It may have lost it learning ability or the initial program was wiped. A reman and flashed PCM is about 200 bucks.
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Old 07-14-2013, 03:59 PM
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Whould a worn timing chain play into it?
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Old 07-14-2013, 04:07 PM
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Possibly if it jumped a tooth.
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Old 07-14-2013, 04:17 PM
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What was it doing wrong before you changed all those parts?
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Old 07-14-2013, 04:58 PM
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Just ping under load and speed sensor would work randomly even with a new one. Called o'rilley's and the guy who took the called would put money on the pcm. His went out at about the same milage and he said the speed sensor thing along with what its doing points to the pcm.
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