Engine Problems, Need some Help?

[bjtheman1]

Just to throw this out there. Idle air control valve maybe? Because I was having the same exact issues with my 03Gt, took off my IACV cleaned it up with carburetor cleaner reinstalled it with a new gasket car ran like new again.

I'm not trying to act like I know a lot about cars. I just wanna help anyway I can, keep us updated.

My car doesn't have an IAC.

[bjtheman1]

what's your plug gap set at?

About 0.32

From everything I've read for boosted applications 0.30-0.35 was recommended

[Captain Crawfish]

About 0.32

From everything I've read for boosted applications 0.30-0.35 was recommended

That eliminates spark blowout.

[bjtheman1]

Took it for a drive and datalogged. Showed a misfire per cylinder #1 Still feels a bit sluggish too.

Any recommendations where I could get this taken care of other than Ford?

[Captain Crawfish]

Took it for a drive and datalogged. Showed a misfire per cylinder #1 Still feels a bit sluggish too.

Any recommendations where I could get this taken care of other than Ford?

If it were me I'd call hpp or somebody reputable to look at it. You can throw parts all day at a problem.

[blackedv]

swap coils between the misfiring cylinder and one that isnt and see if the miss moves. bet you have a bad coil and resistance testing doesnt really show a weak coil only spark testing. i just use a test light and pull the spark out of the boot. if it can make it a solid inch out of the boot its a good coil

[Lone Star Performance]

This ^^^

[shumpertdavid]

use the HEI spark tester, put it in Coil #1, plugged in of course, ground spark tester, start car. The tester should give a continuous rhythm of spark. If it doesn't give a very distinct crack crack crack type sound or the spark skips beats then the coil is weak. As far as the rough idle goes. If it's missing at idle it will not be smooth.

[bjtheman1]

Today I cleaned the MAF, and tested coils- all sparked.

Went for drive, still had misfire in cylinder #1 and has the rough idle

I'll take it to someone this week to get it check out for I've put too much time into this and have gotten nowhere.

[blackedv]

did you swap number 1 coil to a different cylinder?

[bjtheman1]

did you swap number 1 coil to a different cylinder?

LoL, yea I did. Drove and datalogged and showed no misfires.
Still something's not right, idle stayed the same and now I have a pulley squeeking!

[bjtheman1]

Nvm, datalogged today..upon startup had multiple cylinders misfire. Pretty sure it's my water pump pulley that's squeeking too!

[bjtheman1]

Well shit, had it looked at and had the following done:
Compression Test - good
Leakdown Test -good
Coils checked -good
Replaced front 02 Sensors
Checked system for codes - none
Plugs checked - good
MAF checked - good

Still though rough idle and misfires

I've been data logging and I'm getting random misfires from multiple cylinders with rough idle and noticeable lack in performance. This was a first though today, upon starting my datalog before I actually started the car it showed misfires on multiple cylinders...is that possible even though the car wasn't started yet?

Anyone have or know of a site where I can find out details about datalogging parameters? It would be great if I knew what ranges I should be In within certain parameters I choose to help me troubleshoot. For example: short term or long term banks....what ranges should I be in when driving, etc?

[Lone Star Performance]

Unplug the battery for about 20-30mins

[bjtheman1]

Unplug the battery for about 20-30mins

Been there done that.