1998 V70 Timing belt, cylinder head work 330k miles!

Post by **abscate** » 28 May 2018, 07:22

I don’t think your plug wire resistances are bad, are the wires relatively new?

If the crack is down at the mounting bolt it won’t affect spark. I’m not the best guy to ask on these, though, since our 99s don’t have distributors

5rivers · Post by **5rivers** » 28 May 2018, 07:58

Picked up the wires at the JY a few years back (2015 maybe) - don't really know how old they are, but there are no cracks or burn marks on any of the wires.

Post by **FLXC90** » 28 May 2018, 11:29

the black cover has no affect on spark.

the65dartguy1 · Post by **the65dartguy1** » 21 Jun 2018, 11:25

Any updates on your P0130 code? I have one bugging me too and cannot seem to get real good info other than "clear it and see what happens"!

5rivers · Post by **5rivers** » 22 Jun 2018, 22:16

I have cleared the P0130, P0131, and the P0172 codes but they keep coming back! I have put on a newer distributor cap and rotor, tested one MAF sensor that seemed to pass muster, and found one exhaust leak that I patched with JB weld! I did replace the vacuum hose from the air pump to the EGR valve based mostly on the sharp indentations on the underside of the hose that was making contact with a metal holding clip. After I removed it, I rinsed it out with some degreasing krud cleaner, but did not notice any leaks. There is another exhaust leak that I have not been able to find, and will test another MAF sensor tomorrow. I did soak some fuel injectors in purple power and will attempt to clean them again with carb cleaner with the injector connected to a small source of power (a battery maintainer) to achieve a good spray! If replacing the fuel injectors does not clear the codes, I will likely consider getting some new plug wires (first) then a new front O2 sensor (second). Before any of that I need to find and repair the second exhaust leak. I will keep you all posted on my progress!

An old post on either the P0172 or P0131 codes (on this site) did mention replacing a vacuum hose to the brake booster and that ended up being the culprit to the continuing CEL. Once the hose was replaced, the CEL cleared itself! I still have monitors that need to get to the ready stage in order to pass inspection - the CAT, AIR, O2S, and EVAP. The first and last are self explanatory, but AIR has me scratching my head! If I am not mistaken, O2S represents oxygen sensors. Is there a difference between O2S and HO2S? Still learning!!

Post by **abscate** » 23 Jun 2018, 03:21

The H stands for heated oxygen sensor, it just needs a 2week run to test and go ready.

Evap can be fun to get ready but in NY you can pass inspection with it not ready , as long as the check engine light is off

the65dartguy1 · Post by **the65dartguy1** » 25 Jun 2018, 12:32

5rivers wrote: ↑22 Jun 2018, 22:16 I have cleared the P0130, P0131, and the P0172 codes but they keep coming back! I have put on a newer distributor cap and rotor, tested one MAF sensor that seemed to pass muster, and found one exhaust leak that I patched with JB weld! I did replace the vacuum hose from the air pump to the EGR valve based mostly on the sharp indentations on the underside of the hose that was making contact with a metal holding clip. After I removed it, I rinsed it out with some degreasing krud cleaner, but did not notice any leaks. There is another exhaust leak that I have not been able to find, and will test another MAF sensor tomorrow. I did soak some fuel injectors in purple power and will attempt to clean them again with carb cleaner with the injector connected to a small source of power (a battery maintainer) to achieve a good spray! If replacing the fuel injectors does not clear the codes, I will likely consider getting some new plug wires (first) then a new front O2 sensor (second). Before any of that I need to find and repair the second exhaust leak. I will keep you all posted on my progress!

An old post on either the P0172 or P0131 codes (on this site) did mention replacing a vacuum hose to the brake booster and that ended up being the culprit to the continuing CEL. Once the hose was replaced, the CEL cleared itself! I still have monitors that need to get to the ready stage in order to pass inspection - the CAT, AIR, O2S, and EVAP. The first and last are self explanatory, but AIR has me scratching my head! If I am not mistaken, O2S represents oxygen sensors. Is there a difference between O2S and HO2S? Still learning!!

OK, thanks for the update. My code is just the P0130 by itself. Swapped O2 sensors that were good ( or were in the past) and its still coming on randomly.
If you need help with the exhaust issue I have a complete NA exhaust from a 1996 850 I am not using. PM me if it would be of use.

Post by **abscate** » 25 Sep 2018, 18:27

5rivers wrote: ↑25 May 2015, 10:19 Top of cylinder head.jpg

Bottom of cylinder head.jpg

Closeup1.jpg

Closeup2.jpg

Closeup3.jpg

Bumping this thread for Mr jay

Kally...what was your technique for getting this so clean, if it isn’t in the thread?

5rivers · Post by **5rivers** » 26 Sep 2018, 12:19

Hi Stephen,

I believe I soaked the entire head with purple power (a degreaser) and hot water overnight a few times in a large storage bin, then sanded the top with a high grade (600, I think, for body work sanding) sandpaper on a block the length of the head. Also, used a small wire brush (from harbor freight) on the sides and ends. Then used a single shaving blade to help even things out, followed by an application of acetone (nail polish!).
There was a rust remover that I used as well, but I don't think I used any on the cylinder head.
Hope this helps. I think I may have included more details in the first 8 or 9 pages of this thread on cleaning the head.
Cheers!

Post by **abscate** » 26 Sep 2018, 12:29

I thought it said Deep Green in the thread.,..but Ill check.

After a few days of soaking, scrubbing, and brushing with 'mean green,' the inside of the camshaft cover is sparkling:

Didn't he play for the Steelers??

1998 V70 Timing belt, cylinder head work 330k miles!

Re: 1998 V70 Timing belt, cylinder head work 330k miles!