New Fitech install, stuttering issue
Update: Got the new temp sensor installed on the manifold, swapped the old dummy-light sensor to the elbow. Bought a 195 thermo, but the car was running at 215, had to get it back home fast. Pulling it and testing, sure enough, it didn't open until around 210.. sigh.
Bought a 180 thermo, tested & reinstalled, and now it's actually holding around 195. So all that's good.
Then: Took it for a test drive... and other than the stutter it was running fine. Had about 5 miles on it when we stopped it at a shop for some other parts. When to start it, and now it's all sorts of broken. Sounds like it's running on half the cylinders, blowing lots of smoke. Won't start normally, only starts if I hold the pedal to the floor after many cranks, and dies instantly with no full pedal. No error codes on the handheld. Just alternates between 'crank' and 'stall'. Had to have it towed to the shop that did the EFI install.
After they've looked at it, they don't know what's wrong, other than the fact the EFI is acting like it's full choke: the EFI appears to be dumping in tons of gas to the system on start, which is why it won't start right and is blowing smoke.
This was on Monday. I emailed fitech via their 'info' email, filled out their web-page support form, haven't heard back. Called their support number and was on hold for a long time, gave up. IM'd them via facebook, waiting for that too.
Car is now just dead in the shop, have no idea what to do. Any thoughts appreciated. Really hope FiTech actually responds to me... :S
Just my 2 cents, but are you pretty confident that the O2 sensor is not getting any outside air? Does the AFR on the hand held look reasonable when it's dumping all this fuel into the intake? Something I would look at. Could be defective, poorly placed, or poorly mounted O2 if AFR looks good.
Bdhulderman is on the right track. 99% of the time it is install and/or tune issues that is the problem. We can help you through this, but it will take some time and some patience. Many pics and datalogs will be required.
Btw. The Fitech guys are on the Hot Power tour this week. You will probably not get a return call until next week.
Just got back in town. I'm going to run by the shop tomorrow (Monday) and do a log off the handheld I can post here.
I can see the O2 sensor (the one mounted in the exhaust, right?) visually from the engine compartment. It looks installed to spec. Is it possible that sensor died, yet no error would report on the efi? Hopefully the log will explain more.
Thanks for the help.
We will see something in your datalog. Make sure it is up to operating temperature and do a 30 second log at idle only.
To reiterate, the car won't run, I won't be able to get it to operating temp. All the log is going to show is me trying to turn it over, and then it running horrible for a few seconds until it dies. About to head over there and try to capture what I can though. Thanks.
Here is the latest log. Again, this is me keeping the pedal about 50-75% down just to keep it running. Dies immediately if I let off.
https://docs.google.com/spreadsheets/d/17ktOB61huUJKO_B-tmJRJRcr43BE4-GmBfHiGhQzYqc/edit?usp=sharing
Side note: It appears my handheld no longer connects over usb, I have to pull the sd card out. And, it appears it no longer stores logs if there are any on the card: I had to try three times with blank logs until I deleted them all, and it finally stored one out. Pain.
Thanks again for the help.
Looks like those actually logged some errors. I've been searching all over the web and can't find a list of them though, but I presume someone here knows.
You are getting multiple O2 codes. Check electrical connections and sensor install. These things usually are install problems, rarely a Fitech or Sensor related. It is a symptom not the problem.
You are running in Open loop. Zero tuning is occurring. The Fitech is just trying to get you home.