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May 10, 2017 | 07:49 PM

#46

Outlawsquirrel

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Quote:

Originally Posted by Franklin2

44 is the air pump system, I would ignore that for now. 34 is your EGR sensor. I would temporarily take the EGR valve off, make a block off gasket out of a pop can or some other thin metal, and put the egr back on with the homemade block off. Then try it. If it straightens out, then you have EGR problems.

You are probably correct on the other codes, when the test told you to goose the throttle if that didn't happen you will get some other error codes.

I have replaced the tabp, the oxygen sensor and found a broken pcv valve. Truck now idles great but hesitates and seems underpowered under load. I now only get 2 codes, the 44 for thermactor system failure and 34 pressure feedback egr sensor voltage is high. My next course will be as Franklin suggested and block off the EGR and see what happens. Sorry everyone i posted this twice.

Last edited by Outlawsquirrel; May 10, 2017 at 07:54 PM. Reason: posted twice

May 12, 2017 | 11:18 AM

#47

Outlawsquirrel

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Quote:

Originally Posted by Franklin2

I did the pop can trick. As last time it idles fine,comes off of high idle as it should but i forgot to mention it smells real rich even though its idling fine with or without the pop can. Taking off it flutters and hesitates but once you are goin it seems ok. I havent driven far to tell long term. I now am doubting myself as to the timing, i dont think the 85 has an actual spout connector but instead you disconnect a plug by the distributor and there are 2, a black roundish one and a grey rectangular one. i disconnect the black roundish one to set timing.

Last edited by Outlawsquirrel; May 12, 2017 at 12:52 PM. Reason: added information

May 14, 2017 | 10:56 AM

#48

Outlawsquirrel

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Ok since i had someone around to come and rescue if need be i drove the truck some yesterday. It does idle a bit better and dosent smell quite as rich when i block off the egr but there is not a lot of difference at idle. When i drive the truck while under load it does run better with egr blocked off but still cuts out or misses some under load. My thoughts are i do have an egr issue along with something else, the plugs are 1 month old but possibly have 1 fouled? i guess i will pull plugs and check and also is it possible to check components in the egr system or is leavin it blocked off an option? Thoughts or suggestions?

May 14, 2017 | 03:44 PM

#49

FuzzFace2

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From: Angier, NC

I would leave the EGR blocked off even more so if still testing things.

As for checking plugs I have had newer plugs, not a lot of run time on them as the car could not be driven. Started it 1 day to move and it would back fire our the exhaust anything over an idle.
Tracked it down to a bad plug, changed them all out and they looked new out of box.

So find what cly the miss is on and move that plug to another cly and see if it follows.
If so plug if not you need to look deeper why that cly has a miss.
Dave - - - -