So I got an 88 Bronk 5.0 for free. It misses really bad. PO put in new plugs, and wires to try to figure out the prob, and a EGR valce, had Ford dealer look at it, and they didnt figure it out or didnt have enough time. So what should I ck, cap, rotor, injectors?
Here is a vid of how it runs.
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First off you need to read the codes in CM and post them back to this thread.

If you do not know how to read your codes go to one of these links below:

This is good for the KOEO test:
Ford Fuel Injection How To Run a Self-Test

This one is good for the KOER test:
Ford Computer Codes

 

Ok got the codes for the KOEO test and its 23, 31 and 67. Still have to do KOER

 

It did not pass the sensor voltage tests so no do not run the KOER test yet. Run it after you get a code 11 on the EOEO test.

We need to fix these two codes first, the 23 & 31.
The 67 code just means you left the A/C switch on when you did the test or you have a bad A/C switch.

For the 23 code make sure every thing moves OK with the TP Sensor.
For the 31 code look at the plug on top of the EGR valve and wiring to the plug.

Here is what the codes mean:
__________________________________________________ _____________
Service Code 23 indicates that the Throttle Position (TP) sensor's rotational setting may be out of Self-Test range.

Possible causes:

-- Binding throttle linkage.

-- TP sensor may not be seated properly (tightened down).

-- Damaged TP sensor.

-- Damaged processor.

Visually inspect carburetor/throttle body and throttle linkage for binding or sticking.

Verify the throttle linkage is at mechanical/closed throttle. Check for: binding throttle linkage, speed control linkage, vacuum line/electrical harness interference, etc.

Does throttle move freely and return to closed throttle position?
__________________________________________________ ____________

Service Code 31 indicates that the EGR Valve Position (EVP) sensor signal is less than the Self-Test minimum value of 0.2 volts.

NOTE:
Because the EVP sensor is preloaded when attached to the EGR valve, a failure in the EGR valve causing the EVP sensor to lose preload may also set code 31.

Possible causes:

-- Damaged EVP sensor.

-- Damaged EGR valve.

-- Open harness.

-- Grounded harness.

-- Damaged processor.

 

Changed the tps today and cap and rotor, also changed 1 wire as 1 was different from the others. The TB was super carboned up, so i wasted like a can on that and a can on the upper intake, then I seafoamed it. It still has the miss but not as bad as it did, it also idles now and doesnt search for it. I took home the Snap-On scanner today and it wouldnt communicate with the bronk, then I tried it on my truck and it worked fine. So I donno what that means. I was able to pull the codes with a test light so I know its working. I will prob change the plugs and wires. Ran out of light and drank a few so dont feel like workin on it now. Ill pull some wires tomorrow and see if it gets worse or better on each cly.

For KOEO 67 is neutral safety switch. For A/C its has to be KOER says the 1st site u posted.

It has a new EGR valve on it, if its all new or not I cant tell you. Ill ask the guy I got it from saturday.

 

I sent you to the site for information on how to run the self-test with hope that you would post the codes back here.
The codes on that and other sites the definitions are shorten and are not totally right. I have an INNOVA Ford code reader that I love but the book that came with has a lot of misinformation in the code list.
This is true with what you say that the first site said a 67 was. I have not looked at their charts for a while as I use the detail charts put out by Ford.

The Ford manual says this for the 67 KOEO:
Neutral Drive Switch (NDS) circuit open; A/C input high.
It says nothing about KOER for the 67 code.
When most of the posters on this site come up with a 67 I tell them about the A/C switch and every time they have said yes they left it on. They would rerun the self-test and they said the code was gone.

 

Ok, thanks man. Now I got to get the miss to go away, I wont worry about the EGR caus its going to be gone soon enough.

 

Ok so an update, I pulled the plugs and they were covered in black soot, I put in a set from my truck that were in for like 100 miles for the new engine. Plugs 3+4 were clean and kinda wet? If my allergies wernt acting up id be able to smell it and see if its like gas or something else. Let me know. A few of the plugs were white just on the electrode. Maybe that will help out some.

 

From the code above it sounds like you need to look close at the TPS.

 

I changed the tps, and that helped alot. It doesnt look for the idle anymore. Im clearing the codes now and im a see what comes back.

 

Yes you are reading correct. Was testing injectors and when I pulled the #1 inj it got better wierd right, so I was like 1 inj got to be messed up and this is making it balance out. So I pulled the upper off to get a look at the injectors and this is what I found.

Mouse nest!! Chewed through ink 3 and 4.

Have to rewire tomorrow and get new gasket. Here are some pics in the garage. Love how it fits in so nice.

 

Rewired the inj plugs today. She is running great.

 

waw.. cheap fix!

 

i hate those mices to pieces.

 

Well I cut the 2nd cat off, and took a video of me drivin in my back yard.
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