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Yes , many a thought....You have O2 sensors faults and as I said, you claim that your Version is using 1996 parts, so I do not know how an O2 sensor form an OBD2 system would work with a HFM/OBD1 system. The OBD2 is a dual O2 sensor system and I do not know which sensor you put in there .
If you go to the Parts section of the Forum, you will see that the 2 years [ '95 OR '96] use completely different O2 sensors.. mainly b/c they have different Engine management specs and systems. So I don't know what to tell you. Did you use a 124 sensor or did you go with a 210/OBD2 sensor ??

..and would the values the Diagnostics Modules look at be different with an incorrect year/type sensor ?? I don't know b/c this is an odd situation.
If I suspected what you say as far as a special version using different than norm parts, then I would just plug your VIN into the Russian site and see what you really have for an engine type in that car. Then you will know for sure and that will tell you what parts really fit your car. Then a more precise accessment can be made on that particular code #13 [ Lambda]

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A Dalton

Huh, well I've been going on the assumption that it is a 95, vin check with the dealership confirmed engine and chassis are a 95. aside from the aberrative coolant temp sensor and air temp sensor, other factors point to a 95. the 02 sensor was a 95 part, take out was exactly the same as the one I put in, wiring and all.

So, let's go on the assumption it's a 95 all around, this Code 13, in light of the repairs I have completed up to this point, might indicate what?

You think I got a bad 02 sensor?

Vac leak would be my first suspect....

..and FYI, the Coolant temp and Air temp sensors were just mid year 124 engine changes, not '96 parts...that is why you need a serial # for the Wire Harness when doing a late 124 chassis....the harness connectors had to change for the sensor connector changes.

You have a 124.032 w 104.992. Not a 124.032 wiith a 104.995
I would stick with that info whenever ordering parts.

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A Dalton

Ok, that would explain it, guys at the dealership had no clue. Ok, so vacuum leak. where do you recommend starting the process of finding a leak? are there certain areas prone to this I should check first? are there certain areas that would suggest intermittant leaks. this surging issue happens on a ver intermittant basis, with no rhyme or reason to it.

I did notice I get a hissing sound when I pull on the throttle linkage, is this just fuel or perhaps an indication of air being sucked in somewhere that shouldn't?

perhaps bad injector seals? and heaven forbid, an intake manifold leak?

Look at all SOVs ..specially the ones under the front cover...very common on 104 engined 124 chassis.

..and if you hear throttle hissing, I would still check purge system by capping it and running it for a few days to see if that code clears. If a purge does not close on Hz dmands , you in effect have an INTERNAL system vac leak that you can not see/feel/hear.... just disregard the purge code for the test period..... and I would also set the HFM module memory back to mean base-line so it does not have to readapt.

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A Dalton

the vac lines on the SOVs on the front are new, cuold the SOV itself be bad? what's the best way to test this?

I'll pull off the vac line from the purge and plug for a few days. see what happens. the codes have been cleared.

how do I set the HFM module memory back to mean base-line? is this just simply clearing the codes?

<< is this just simply clearing the codes?
>>

NO.

You want to reset the Memory..

After Single Flash, 6 sec/button and then KO for 50, KON for 10, start.

All in the Archieves.

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A Dalton

Ok, so do I use the built module for this or the home built code reader, and if it's the latter, which pin do I use? 8, 14 or both? an archive mentioned 5 seconds for the KO time, is it 5 or 50 seconds?

nevermind, found it. thanks

Ok, I disconnected the purge valve and plugged the vacuum line. Car ran great all weekend, no issues, all good.

today, while driving in stop and go traffic, the car immediately starting running very poorly, then surged dramatically. I stopped at Lowes for a couple of house things, started the car, and it ran terribly. I then plugged the vacuum line back into the purge, only to be dealt with extremely poor running, and when I put the car in gear, stepped on the gas, the car died. this happened several times while restarting and I eventually got out of the parking lot.

I'm at a loss here.

any updates ? did you get this resolved ?

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Whether you think you can or cannot, Either way you're right!. by Henry Ford.

any updates ? did you get this resolved ?

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Whether you think you can or cannot, Either way you're right!. by Henry Ford.