1967coronet440
Well-Known Member
Should take care of your idle issue.
How's about a little fuel injection?
- Thread starter HT413
- Start date
1967coronet440
Well-Known Member
That might solve the whistle noise also, since the idle air control numbers are off it probaly has the butterflies closed too far at idle
HT413
Semi Pro Bowler
Yeah were right on. with the air cleaner off it got louder and by ear, it was clearly coming from inside the throttle body. I changed the gasket anyway, the one they supplied was like a piece of Masonite.
IAC is supposed to be 3-10 at warm idle, mine was at 147. Plus my throttle linkage was a bit off. Little adjustment and 1/2 turn on the throttle screw and the idle cleared right up and IAC is at 7-10.
Kinda cool, at this point it has 10 min of idle time and maybe 10 miles on it. You can hear the ecu hunting and pecking and you can see the learn % going up and down... pretty neat stuff.
Maybe the best part...
First time in 5 years that fuel gauge read full.
Gpuller
Well-Known Member
Good to hear it's working out for you. There is a Fitech group on Facebook, seems to be a lot of problems there. Some I think are from installation issues.
What are you running for ignition? MSD dist?
What are you running for ignition? MSD dist?
1967coronet440
Well-Known Member
Where’s the video
1967coronet440
Well-Known Member
alot of people have issues because they mismatch the parts, and don’t read the manual
HT413
Semi Pro Bowler
My phone took a dump... mucho video mañana.
1967coronet440
Well-Known Member
grasśy asš
73rr
Well-Known Member
Excellent info, thanks for taking time to post it!!
HT413
Semi Pro Bowler
@1967coronet440 I'll tell ya something, your info on IAC got me to do some research. I think I'm gonna have fun tweaking this thing, at first I figured it was more plug and play but some adjustments will definitely need to be made.
Question about IAC... It's at 7-10 or so now at warm idle and climbs into the 50's on acceleration, not WOT, maybe half a pedal. Normal?
Question about IAC... It's at 7-10 or so now at warm idle and climbs into the 50's on acceleration, not WOT, maybe half a pedal. Normal?
1967coronet440
Well-Known Member
Yup, as long as it’s reading in that 3-10 range on idle you’re good.
1967coronet440
Well-Known Member
I can’t wait to get mine fired up and get it tuned up, pretty jealous right now. As far as I know that IAC ( Idle Air Control) is basically like your base tune that Jd to be correct for the ECU to make the proper corrections/adjustments from there. Did you notice the throttle response get better once you got the IAC set properly
HT413
Semi Pro Bowler
Oh yeah, before that idle was up at 1200-1500 (set at 900) and it fell on its face the couple times I got on it around the neighborhood. Now idle is in the 825-950 range and response is crisp. Still got work to do but not bad for 10 seconds and 1/2 a turn on the idle screw.
Gpuller
Well-Known Member
HT413
I know you're using the Fitech intank pump. How is the rest of the system plumbed? If I remember correctly, the Fitech pump has a built in regulator. So all you have to do is run a supply to the throttle body. No return back to the tank because the regulator is on the pump. Am I correct?
I know you're using the Fitech intank pump. How is the rest of the system plumbed? If I remember correctly, the Fitech pump has a built in regulator. So all you have to do is run a supply to the throttle body. No return back to the tank because the regulator is on the pump. Am I correct?
You are right on. If one reads the tech section on FiTech's site, they'll see that virtually all of the questions asked are explained in the owner's manual. I'm amazed that guys will spend that kind of money and then make up their own installation instructions. If anyone is interested in the FiTech or any other EFI unit, I humbly suggest that they go to the manufacturer's site and read the install directions...
HT413
Semi Pro Bowler
Yep the pump has a regulator in it and it can be run with or without return. The throttle body also has a regulator in it so I decided to remove the pump reg and stick with the one in the throttle body. I ran a return cuz I figured it'd be easier on the pump that way.
Midnight_Rider
Well-Known Member
Thanks for taking the time to post your experiences with the FiTech.
HT413
Semi Pro Bowler
Drove it pretty hard for about 25 miles yesterday. Boy is it fun!
Noticed the internal coolant temp registered a rock solid 170* the whole time - about 15 degrees cooler than my Autometer. Explains why my fans aren't coming on, set for 185* on 180* off. So I set the on/off for 170* / 165* just to see them come on... and got a fan relay fault #74.
So went cruising anyway... interesting that now idle was hunting more than normal. i understand that the ecu adjusts the IAC steps up a bit when it's activating the fan, and since the fan didn't come on, it affected the idle.
So I turned the fan control off for now to see if it comes back to normal (I'll troubleshoot the fan circuit some other time). Haven't had the chance to drive it yet to see if it brought the idle back under control.
Got some videos I'll post later...
Here's the controller with the key off - the ecu has constant power, so does the screen - though it goes to sleep in a couple minutes.
This is car not running (rpm 0) but key in run position.
IAC steps seems to start hi before I start the car, then as it runs it comes down to about 4-4. This is key in run, but engine off.
I understand that cylinder temp is an estimate based on air temp and coolant temp? Think I read that somewhere.
Noticed the internal coolant temp registered a rock solid 170* the whole time - about 15 degrees cooler than my Autometer. Explains why my fans aren't coming on, set for 185* on 180* off. So I set the on/off for 170* / 165* just to see them come on... and got a fan relay fault #74.
So went cruising anyway... interesting that now idle was hunting more than normal. i understand that the ecu adjusts the IAC steps up a bit when it's activating the fan, and since the fan didn't come on, it affected the idle.
So I turned the fan control off for now to see if it comes back to normal (I'll troubleshoot the fan circuit some other time). Haven't had the chance to drive it yet to see if it brought the idle back under control.
Got some videos I'll post later...
Here's the controller with the key off - the ecu has constant power, so does the screen - though it goes to sleep in a couple minutes.
This is car not running (rpm 0) but key in run position.
IAC steps seems to start hi before I start the car, then as it runs it comes down to about 4-4. This is key in run, but engine off.
I understand that cylinder temp is an estimate based on air temp and coolant temp? Think I read that somewhere.
HT413
Semi Pro Bowler
Got the fan controller squared away, works great, though the idle is still pretty up and down... much more so than the carb.
Need to put more miles on it. Mine took about 200 miles to self learn. Have fun!
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