Typical codes seen on an EGR and smog delete car.
If this was my car, i'd repair that vac port on the throttle body, and then smoke test the entire system looking for additional vaccum leaks.
Once you are sure you've got them all, erase the codes, drive a bit and run them again. Most of the codes you have are not going to cause your issue. The EGR codes could, but vac leaks definitely will. Since we can see one big one, and you suspect you have more, i recommend you fix those first and then go to the next item on the list.
And code readers spitting out an engine ID of having 6 cylinders is common. Just ignore it.
Thanks. I have JB weld fixed the throttle body leak. When it was running poorly I sprayed carb cleaner all over the top of the engine. Under the intake. Anywhere I could spray. There were no other leaks.
This afternoon I disconnected the battery and turned on the lights for about an hour. COMPLETE drain of any residual electrical. Probably overkill, but why not. I also filled the tank and I’m putting on some miles to check MPG in a few days.
It does feel like it’s running smoother and stronger.
Thanks for the 6 cyl comment. I wondered.
I read that all my error codes are considered soft codes and won’t affect the spark/fuel system.
I read about putting an EGR back on, but I think that would include an air pump, plus I recall my intake was not able to use EGR because of a missing or blocked hole. Over my head at the moment, but worth the effort? Guessing no.
I was going to have someone dyno the engine and fix codes, but kind of pricey for me. Others have suggested a added chip, but others say they are just preset, so doesn’t sound like a solution. The most reasonable thing I’ve read was using a clone computer to transfer all data to a new ECU and then use a computer to manually make changes, however I would not know what settings to target for improvement. Bear in mind this is an 89 block with ported GT40 heads, explorer intake, new cam. I wouldn’t know where to begin, which throws me back to the dyno people and their expertise. In the meantime I’m just trying to get all the components on the same page. Look for the obvious. Vacuum leaks. Sensors operating out of range. But I think they are all solid now.
I think some fine tuning is needed, but I’m afraid of what I might accidentally do wrong and blow up the engine! I have all the specs, the cam, the diameter of the throttle body and MAF. How much flow likely going through the ported heads. So I have some good info, just not the understanding of the system.
Well, I’ll see what a few days may show. Check codes again, mileage, and report back. Thanks for your contribution. I feel good I really sealed up that throttle body elbow.