ernesthoward76

I have o4 tl 3.2 AT. 8 mos ago cyl 5 blew out spark plug stripped thread - removed head install helicoil at Machshop, replaced all gaskets coolant , oil etc IGN at TDC car starts and has whining noise from belt area - not that concerned, the real prob comes after car reaches temp it raise rpms to 4000 -4500 and drops back to 1000 , this cycle repeats itself continuously, when placed in gear idle is at 2000 , upon take off engine stumbles a bit and has no prob accel but misfires when pedal is released , checked for vac leaks , non discovered that i can tell DTCs are p0301 - 6 and P0300 all cyl random misfire What is happening

nfnsquared

Forgot to reconnect the ECT or O2 sensor? No other codes but the 0300-0306?

Has it run fine after the repair and then just started doing this? Or did this start right after the repair?

ernesthoward76

I have to ask you this , where about would this be located , although I did not do the work I witnessed my brother doing this so if you can direct me i might just be able to locate it, I have shop manuals and a Haynes book.

nfnsquared

Look under "cylinder head removal", "ECT (engine coolant temperature) sensor removal", "A/F sensor removal". Do you have the actual Acura TL service manual? If so, I can give you the actual page #'s.

ernesthoward76

yes I do i have it online PDF

nfnsquared

Chapter 11. In the 04 SM, it's 11-167.

ernesthoward76

thank you I will take a look , by the way if it's not that do you think that it could be a ground wire, I noticed that he installed a new motor mount on pass side and connected the ground wire to the engine instead of the engine mount holder , could this cause this too ?

nfnsquared

Could also be a disconnected IAT sensor or MAP sensor. I'll bet he forgot to reconnect something.

You're sure all vacuum lines are reconnected?

ernesthoward76

I have take these out and cleaned them with TB cleaner because i suspected they were the culprit about a week ago but they had no effect on performance

nfnsquared

What?

ernesthoward76

I noticed that he put this wire in the wrong place is it possible that this is causeing the issue, I know it sounds really bad but I can see how this would happen but I would have not done that if I was putting back together , after all my specialty is Computers not cars and I just assumed he knew where it went I need to remove the OS pulley to remove the wire and place it in the correct location.

ernesthoward76

sorry about all the typos , I have large fingers , lol , But i would like to thank you for all the help I am going to reconnect the wire near the PS pulley and see what happens , by the way Why is it that others have reported the cylinder 5 blow out problem ?

nfnsquared

The engine mount ground wire? That's not causing your problems....

You need to back over all the sensors and vacuum hoses that were disconnected and be sure they were reconnected.

Are you sure the only codes were P0300-P0306? If you have another code, it would certainly help narrow the problem.

ernesthoward76

yes p0301 302 303 304 305 306 and p0300 was the only other code

ernesthoward76

yeah you're right I i have been all over those vac hoses I read somewhere that there is a vac line somewhere under the engine mount the shop manual as detailed as it is manages to not be too detailed on illustrations

nfnsquared

There is no vaccum line for the side mount...