Engine New Manifold nightmare idle and stall

J

johnvpr

Member

Jul 31, 2020

6

2

13

san diego, CA

Jul 31, 2020

#1

• Jul 31, 2020

• #1

Hello, All,

I had to fix the coolant leak on My 2005 Stang GT and I removed and reinstalled the manifold, I also replaced the Manifold with IMCR, Gaskets (upgraded to 2007 all plastic Manifold version). did a vacuum test with propane and smoke.

when I start idle stays between 1500- 2000rpm, and if I give gas it will stall, it also smells like gas and plastic, after stalled it will turn on only if i press all the way down on gas

This are my OBD2 readings, anything looks wrong?



Thanks

John

 

Dino Dino Bambino

15 Year Member

Jun 13, 2007

1,672

89

79

Cyprus

Aug 1, 2020

#2

• Aug 1, 2020

• #2

I still think you have a vacuum leak. All I can suggest is to remove the intake manifold and retrace your steps.

 

J

johnvpr

Member

Jul 31, 2020

6

2

13

san diego, CA

Aug 1, 2020

#3

• Aug 1, 2020

• #3

I found this guide to read OBD2 sensor very useful:

How to Read Live Data From OBD II Scan Tools

Hey I'm Matt - Most DIY car fixes can be easily achieved using a basic OBD2 scan tool and today we're going to help you understand how to read live data from OBD ii diagnostic scanners.

scanneranswers.com

 

J

johnvpr

Member

Jul 31, 2020

6

2

13

san diego, CA

Aug 1, 2020

#4

• Aug 1, 2020

• #4

I finally figure it out, If you see in the screen capture of the OBD2 reading it says coolant temperature -40, so I followed the sensor cable and find out that was connected in the wrong way

 

Reactions: Dino Dino Bambino and Potomus Pete

Potomus Pete

I'm still waiting for the fully nude shots

5 Year Member

Mar 7, 2019

3,308

1,223

153

Sarasota Florida

Aug 1, 2020

#5

• Aug 1, 2020

• #5

Pretty good problem solve Johnvpr.