[charged392]

Thenplugs at the back of the intake drivers side are plugged in all the way and the pins didn't pull out correct.

 

[HemiFun05]

I verified that the TB was plugged in and, as luck would have it, that the unit was still under warranty. So, I just swapped it for a new one and, as I expected, no change in idle and it still skips. I did the idle speed relearn before swapping the tb to see if it helped. I also repeated it with the new one. Ive even run seafoam through the manifold via the vacuum hose from the brake booster to clean the injectors since they were out of the engine for a week or more ( I was thinking maybe gas had varnished inside them causing all the codes) but that did nothing. At this point, I am planning on getting a harness, ecm, and injectors at the junkyard this weekend unless anybody has any better ideas.

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It is difficult to believe that you have that many parts causing you problems at the same time :facepalm:.

:GoodLuck1:

 

[Redtruck-VA]

There's a second plug at the driverside rear of the engine that's for the TB and ect sensor. They are hard to reach to disconnect and re connect. I would go back with a battery disconnect and start over with the trouble shooting steps. While going through it again I'd check every plug you touched. This isn't that hard, just need to be systematic.

 

[Moneypit]

Yeah i have plugged and unplugged both of the connectors several times to make sure they seat into one another. After thinking about it, i will assume the coil code was from when i was unplugging them while the engine was running to listen for a change in pitch of the engine. That would be the only logical explaination since 2 different coils were used in the space the code pointed to.
As for the injector codes, I am again assuming it was also a result of unplugging each one while listening to the engine as they are all gone and have not reflashed since I cleared everything.
As of last night, the new TB did not satisfy the lightini g bolt or MIL and I still have a P0123 with a new TB and doing the relearn by pulling the PCM fuse and depressing the gas pedal fully and releasing then plugging the fuse back in and starting the engine.

 

[Redtruck-VA]

The procedure you should do for the relearn is, after a reset. Turn ignition on without starting the engine. Push throttle down and release. Turn off and then start normally.

 

[Redtruck-VA]

The dtc P0123 points at tps voltage being high. This usually means the tb plug isn't plugged in properly. Disconnect and look at the pins to make sure one isn't bent over.

 

[HemiFun05]

The procedure you should do for the relearn is, after a reset. Turn ignition on without starting the engine. Push throttle down and release. Turn off and then start normally.

---------------------------------------------
:iagree: - This procedure worked perfectly for me the very first time when I went to an upgraded TB and without a problem since :thumb:.

 

[CavRam]

Just a thought, electric and fuel systems a checking out OK so far, how about air?

Would a cracked or poorly sealed intake manifold cause these codes and idle problems?

 

[Ghost03hemi]

At this point, the problem hasn't been figured out. It might be time to take it to a ASE certified mechanic that has the dianostic computer system to hook up to it and fix the problem/problems.

 

[charged392]

Your going to need a good scanner now time for some testing. I have flow charts I can post but you need a scanner to see what pcm sees while testing

 

[Redtruck-VA]

Have you inspected the spark plugs from the offending hole? If you have one smashed it could give a coil code.

 

[charged392]

Gen only has the TB code now I believe. It's going into limp mode and run a like crap hardly idles type deal I bet can confuse you if you not familiar with the symptoms.

 

[Redtruck-VA]

Ok, maybe you can breakout the tb harness from the driverside rear plug to inspect. If I remember right the tb , IAT and ect wires are bundled together. When I did mine I had the whole harness on a table making the job easier.

 

[Moneypit]

Okay, so i replaced the throttle body since it was still under warranty. I have tried leaving the battery cabkes off over nivht, ive tried connecting them to each other while off the battery and set overnight, ive tried switching the ignition to on and pushing the gas all the way down and back up then turning the switch iff and then starting the truck, ive tried pulline the ecm fuse and nothing will cancel the mil or lightning bolt. Maybe dancing naked with a 3 foot garden hose up my exhaust while juggling 3 - 10mm sockets and siging tiptoe through the tulips in piglatin?

 

[Redtruck-VA]

Do you still have the misfire? Do you have a tuner that you can plug in and clear codes with?

 

[Moneypit]

I do but thats the crazy thing; when i clear the codes, i get the chime confirmation but the codes never actually clear.

Iptoeta hroughta heta ulipsta........

 

[Redtruck-VA]

That usually happens if the fault hasn't been fixed and is still present. After doing a cold reboot. What dtc's are you getting?

 

[Moneypit]

P0123 and P0118
Thats with a brand new tb, wires, plugs, yadayda

 

[charged392]

So you have a throttle body issue and a coolant temp sensor issue. Key on engine off measure the voltage on the coolant temp sensor wires unplugged should be al least 4.2 no more than 5.2v

Throttle body code needs to be measure the voltage also. The code indicates high voltage like your wide open throttle all the time. Measure the voltage on the tps wires key on engine off. Better yet if you had a scanner go into data and see what the computer says it's seeing on the line. Needs to be around .4-.88 one 1 signal and around 4.2 on the other signal there's two sensors in the TB.

 

[MANual_puller]

I do but thats the crazy thing; when i clear the codes, i get the chime confirmation but the codes never actually clear.

Iptoeta hroughta heta ulipsta........

Taa eastla ourya igpa atinla sia noa ointpa. :brows: