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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Really BAD Pinging, but timing is ok?

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Old Sep 17, 2006 | 07:52 AM
  #1  
Saint_Berzerker's Avatar
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From: Austin, TX
Really BAD Pinging, but timing is ok?

So, I got a code 52 so I figured I'd look at my timing. I replaced the knock sensor months ago and fixed the 52 and I couldn't believe the knock sensor was bad.

I cleared the code, and checked the timing. It was WAY retarded. The mark was an inch or so to the right of the 0 mark, and couldn't advance the dist any further.

So, I farted with the idle and distributor and somehow, miraculously, I can get the timing mark to 5 with the jumper in.

But....now....I get the worst pinging I've ever had. My whole drive the other day, about 350 miles, was a nightmare. Pinging the whole time, just awful.

Why would I get awful pinging with my timing correct? Should I just put it back down way retarded like it was before? I like setting things how they're supposed to be, but this is rediculous.
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Old Sep 17, 2006 | 08:22 AM
  #2  
Bumpin' Yota's Avatar
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From: Sarasota, FL
try giving the knock sensor's sheilding a good ground. Might also think about getting a new wire too.
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Old Sep 17, 2006 | 09:09 AM
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Saint_Berzerker's Avatar
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When I was hunting the code 52 months ago, when I put another knock sensor in, I soldered the connector to the sensor, just to make sure it would stay, and I spliced a new wire, with shield, to the final 1' of the wire to sensor.

So, it's been fine for 6 months, at least. Never any pinging since, even with the code 52.

I only got the pinging when I put my timing to specs. I'm not getting a code 52 anymore, but still have the bad, bad, pinging. Sounds like freaking black cat firecrackers going off under the hood.
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Old Sep 17, 2006 | 09:19 AM
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From: Austin, TX
sometimes the rubber piece inside the harmonic balancer lets go and the outside edgde, where the timing mark is, will rotate in relation to center and put the mark in the wrong place. thats unlikely though. refer to the troubleshooting chart in the haynes...
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Old Sep 17, 2006 | 06:40 PM
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MAXIMUS1968's Avatar
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I have the same problem, i have to place the timing on 0 BTDC to get it to stop, Ive banged my head with this, I dont know what else to do. I have no codes ever show either...scratch my head on this one
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Old Sep 17, 2006 | 06:45 PM
  #6  
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Could the woodruff key possibly have fallen out and caused the balancer to slip out of position?
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Old Sep 17, 2006 | 07:35 PM
  #7  
Saint_Berzerker's Avatar
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I don't know what a woodruff key is, lol....I wouldn't know how/where to check.
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Old Oct 2, 2006 | 04:28 AM
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Originally Posted by Saint_Berzerker
I don't know what a woodruff key is, lol....I wouldn't know how/where to check.
the woodruff key is the little piece of metal that lines the harmonic balancer up with the crankshaft.
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