[Phillgy1]

2014 st. I took intake manifold off just to simply see valves and when i put it back together i got an engine fault msg, a very rough idle, and limp mode. Please help.

 

[STallion18]

Make sure all the electrical connectors are plug in all the way and you didn’t miss any to connect.

 

[Phillgy1]

Make sure all the electrical connectors are plug in all the way and you didn’t miss any to connect.

Didnt miss anything, just took it all apart again just to make sure i didnt miss anything and nope nothin missed

 

[Oldandintheway]

Triple check the throttle body connector, It is easy to miss and can come loose if not clipped in. I recently cleaned my intake valves and had this same issue at 1:30 in the morning. It was the throttle body connector. Also verify all vacuum hoses are connected.
And...Welcome to the forum!

 

[Phillgy1]

Triple check the throttle body connector, It is easy to miss and can come loose if not clipped in. I recently cleaned my intake valves and had this same issue at 1:30 in the morning. It was the throttle body connector. Also verify all vacuum hoses are connected.
And...Welcome to the forum!

I un did and re did it all, gonna fire it up here in a min n see what happens. And thanks.

 

[Phillgy1]

Fired up, seems to be idling fine but still have a check engine light, engine fault msg and soon as i touch gas pedal it dies. Should i let it idle for a while?

 

[Oldandintheway]

Strange, how many miles on it? Could be the throttle body is stuck and needs to be cleaned. Many things it could be. Do you have something to check the codes? There are a bunch of guys on here who know more than me, hopefully they chime in.

 

[Phillgy1]

Strange, how many miles on it? Could be the throttle body is stuck and needs to be cleaned. Many things it could be. Do you have something to check the codes? There are a bunch of guys on here who know more than me, hopefully they chime in.

Just hit 95k miles. Everything was fine, runnin good no issues prior

 

[Oldandintheway]

Definitely have to check to see what codes are there, that will point you in the right direction.

 

[sttwoton]

It sounds like you may have cracked the crappy plastic inlet to crank case pipe, or maybe the connector, you’ll have to remove it again, to clean the valves and fit a catch can, which will do away with the plastic pipe anyway.

 

[itssocoldinthe]

Just hit 95k miles. Everything was fine, runnin good no issues prior

Tell us what codes you have. Knowing this will make a big difference.

Still sounds like something got damaged from cracking that thing open unfortunately.

When I did a series of mods on my car, as soon as I turned it on I got a CEL and some awful throttle response. Fortunately, I had a scanner so I pulled the code and was able to sort out the diagnostics steps from using forum posts here.

Turned out that a connector I thought was connected wasn't really connected. Unplugged it and replugged it and it STILL wouldn't work. Turns out I just didn't get it to clamp together enough and on the fourth try, it snapped together. Had to reset the ECU but once I did, all was well again.

 

[Phillgy1]

Well ****, now it just starts and then dies

Tell us what codes you have. Knowing this will make a big difference.

Still sounds like something got damaged from cracking that thing open unfortunately.

When I did a series of mods on my car, as soon as I turned it on I got a CEL and some awful throttle response. Fortunately, I had a scanner so I pulled the code and was able to sort out the diagnostics steps from using forum posts here.

Turned out that a connector I thought was connected wasn't really connected. Unplugged it and replugged it and it STILL wouldn't work. Turns out I just didn't get it to clamp together enough and on the fourth try, it snapped together. Had to reset the ECU but once I did, all was well again.

I cant find my code reader, idk where tf it is

 

[Phillgy1]

Ok so i got some codes
P0106
P0236
P0300
P0340
P0344
P0365
P06a7
B2700
C2906

 

[Phillgy1]

Well ****, now it just starts and then dies

I cant find my code reader, idk where tf it is

Ok so i got some codes
P0106
P0236
P0300
P0340
P0344
P0365
P06a7
B2700
C2906

 

[Sobro]

A slew of codes that just pop up after maintenance is often an electrical problem. Perhaps a blown MIDI fuse or a ground that has lost contact. Check the No Key Detected thread:

2015 Focus ST - KeyFree No Key Detected

Please help... Two key fobs, both are good, both batteries are good. Car battery is good. All these have been confirmed.. BUT... Car will not start. No key detected. Again, the car battery is fine. The 2 keyfobs I have both have new batteries. Also confirmed in good working order. Here is what...

www.focusst.org