'87 II 2.9 codes and jerking

[Ottieotter]

Hey all, got a issue with my '87 BII, 2.9 V6 5-speed.

Recently it's started jerking under throttle, acting like its cutting fuel or spark for a second before coming back, along with sometimes almost dying when taking off from a stop.

Harassed the ECM for codes, got a code 10(?), code 30(?), code 33 (EGR Valve fault), and code 77 (Operator error during dynamic response test/wide open throttle not sensed).

The code 33 I suspect is either the vacuum sensor on the EGR valve or the solenoid that sends vacuum to the EGR as I just replaced the EGR valve less than a month ago, everything else is a mystery to me.
Any advice would help

 

[franklin2]

If it idles smooth, you can disconnect the EGR vacuum line and plug it off with a screw. That will take the EGR out of the picture to make sure it has nothing to do with the problem. I have run for years without the EGR.

There is no code 10 or code 30. You can pull the codes again, it is very easy to get mixed up when counting pulses.

 

[Ottieotter]

If it idles smooth, you can disconnect the EGR vacuum line and plug it off with a screw. That will take the EGR out of the picture to make sure it has nothing to do with the problem. I have run for years without the EGR.

There is no code 10 or code 30. You can pull the codes again, it is very easy to get mixed up when counting pulses.

I had went out and bought the code reader, those are the codes that it's giving me.

 

[SenorNoob]

IDK about reading by hand, but I have had my reader give me a 10.

 

[Ottieotter]

I went out a drove it a bit this morning (around 2 miles to get it up to operating temp,) couldnt get it to give me anything other than that code 10 and code 11 during a KOEO scan, got the code 33 and code 77 during a KOER scan

 

[Ottieotter]

If it idles smooth, you can disconnect the EGR vacuum line and plug it off with a screw. That will take the EGR out of the picture to make sure it has nothing to do with the problem. I have run for years without the EGR.

There is no code 10 or code 30. You can pull the codes again, it is very easy to get mixed up when counting pulses.

Got the line plugged off, cleared the codes, and took it out for a drive. It's still throwing code 33, idle does seem to be surging a bit now too. Wont go below 1k RPM and tries to die when it does