Engine Miss After Intake Install

2

2000redstanggt

New Member

Dec 8, 2016

8

0

1

Dec 15, 2016

#1

• Dec 15, 2016

• #1

My 2000 mustang gt had a coolant leak in thermostat housing after installing new intake it has a miss ive checked all COP connections they seem fine could I have plugged somthing im wrong ??? Ive also noticed that if I rev it in neutral it takes forever For rpm to drop down and return to normal I also know that I have a bad 02. Sensor that I Am replacing tomorrow thanks for all help in advance

 

L

lastcall190

Member

Oct 27, 2016

24

3

13

Dec 16, 2016

#2

• Dec 16, 2016

• #2

Any vacuum leaks? Double check everything, sometimes it's something simple. Not saying that's a surefire way to a miss, but the slow RPM dropping might have something to do with it. Good luck.

-J

 

2

2000redstanggt

New Member

Dec 8, 2016

8

0

1

Dec 16, 2016

#3

• Dec 16, 2016

• #3

Alright will do, thanks for input I will check for vacuum leaks I just don't understand how it runs great before intake swap (had to swap because thermostat housing was leaking on the old one) but runs like crap afterwards

 

RaggedGT

Been here over a DECADE and still no CT

Mod Dude

Jul 20, 2014

4,756

3,213

203

Taylorsville ky

Dec 16, 2016

#4

• Dec 16, 2016

• #4

My guess would be a pinched vacuum line or missing a line-or an intake leak. Hope you find it

 

2

2000redstanggt

New Member

Dec 8, 2016

8

0

1

Dec 16, 2016

#5

• Dec 16, 2016

• #5

Ok so I did the old cigar smoke test and all I came up with is that the egr was smoking from the little holes in the bottom I don't know if this means its bad or not. But I did put all new spark plugs in it today and she runs much better but now I have a miss at low rpm so now I'm looking for that