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Engine Trick flow hci idle issue

  • Thread starter Thread starter Jvshouse
  • Start date Start date Dec 31, 2020
J

Jvshouse

New Member
Mar 27, 2018
27
0
1
Dec 31, 2020
#1
  • Dec 31, 2020
  • #1
I just had my friend put in trick flow hci. Stage 1 cam and street intake. Car is great on top end now. I have 3.08 gears in the back. Will be going to 4.10s or 3.73. It's a 92 5 speed car. There is some bucking below 2k rpm though. Gears will keep me from lugging it though. My problem is more so with the idle. 1st start the car it idles great. Around 750 rpm. Once it's up to operating temp the rpms rise to about 1100 rpm. That's where we increased it to because of the stalling issue. Under 1k to 1100 if I rev it it will stall. I just lowered it today to around 800 rpm to see and it will idle but as soon as I rev it and it's coming down it will drop in rpm to around 400 and try and catch it self but usually die. With the idle screw bumped up it's high enough where theres no stalling. Any help? I would like a lower idle of course. Also before hci no issues.
 
D

Deleted member 215073

Jan 1, 2021
#2
  • Jan 1, 2021
  • #2
Did you perform a base idle reset? Is there a vacuum leak?

Help me create the "Surging Idle Checklist"

Updated 26-Oct-2019 to clarify creeping idle RPM increase as the car is being driven. Many of you are familiar with the "Cranks OK, but No Start Checklist for Fuel Injected Mustangs" checklist and the No Crank Checklist. They are very effective in finding and eliminating the problems by use of...
www.stangnet.com
 

General karthief

wonder how much it would cost to ship you a pair
5 Year Member
Aug 25, 2016
27,872
10,542
203
polk county florida
Jan 1, 2021
#3
  • Jan 1, 2021
  • #3
You can't really just adjust the idle stop screw all willy nilly, there is a reset procedure to it. It's in the checklist.
 
Reactions: Monkeybutt2000
J

Jvshouse

New Member
Mar 27, 2018
27
0
1
Jan 2, 2021
#4
  • Jan 2, 2021
  • #4
Yes I did the base idle reset. No vacuum leaks. I have the timing set at 10 degrees and the cam is advanced 4 degrees. I was told I should bump it up 4 degrees.
 

Dan02gt

mazing how much gas smell came from that tiny hole
20+ Year Stangneter
Mar 2, 2003
909
415
113
Greenville, NC
Jan 3, 2021
#5
  • Jan 3, 2021
  • #5
I would recommend going through the entire Surging idle check list just to make sure everything is 100% before digging any deeper.
 
Reactions: 7991LXnSHO

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,217
17,900
224
Massachusetts
Jan 4, 2021
#6
  • Jan 4, 2021
  • #6
WHat's the rest of the combo?
 
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