I'm a little disappointed so far. After a horrible first outting where I could not get to full throttle without it falling on it's face I decided to retune it. Unfortunately it wouldn't start after a cool a night without a little help. Next I ran through the computer set up and it still won't idle at he 850 of 900 without stalling out. Crank it up to a 1000 rpm and it stays running but is rough. Good note I sat in the car for 20 mins trying to get it to operating temp and couldn't get it over 150 degrees. After 20 mins of idle in the driveway I hit the gas and it was a choppy rev. I put it in reverse for a test run and it died. So mad I closed the hood and walked away. My carb that I junked ran as well as my EFI runs now. Hopefully tomorrow it will co-operate. FYI I just a brand new wiring harness installed so there are no more electrical bugs

Sorry to hear about your struggles. I have a Holley Commander 950 on my Cuda and after it's tuned it really is worth it.
Are you sure your fuel pressure is set correctly?
Run one ground wire from the body to the computer to the ignition to the engine block and to the battery. Do this no matter how good you think your grounds are.
Use a timing light to compare the actual engine timing to what the computer thinks it is.
It sounds foolish but check that the spark plug wires are all on securly and that the firing order is correct.
I know that it can be very frustrating, but when you get it right you'll never go back.

do you have a clean power source? the fuse box most likely will not work.

is the fuel pressure too high at idle making it run too rich?


why won't the car get warmer then 150*? i believe under 160* the efi will run in a rich condition because it thinks its a cold start.


make sure the plugs and O2 sensor aren't fouled now before you run it again.

have you called tech? if so what did they tell you?

Log on to here:
http://www.cpgnation.com/forum/fast-product-support.html
and post your problem. This is a great place to get the best tech help for the EZ-EFI.

But I will jump ahead and suggest that you verify the main power connections (straight to the battery), and that you have a clean tach signal from your ignition.

From your note it sounds like the engine didn't run well with a carb either. Am I reading that right? Also, the engine must warm up to at least 170 for the learning to kick in. You have other issues if the engine won't warm up.

the engine has less than 700 miles on it. I had everything professionally installed to make sure that I wasn't going to have grounding or connection issues. The timing is set the same as it was when dynoed. The car used to run extremely hot when carbed now I can't get it to 160 when it was driving. Hopefully the rain stops and I can get a chance to play with it this week(end)

Fuel pressure is set at 43. what are good a/f number to look for. I can't keep it running long enough after I reset everything to get the AL to hit the target point

Almost guarentee your plugs are fouled. That is only issue I had upon first start up because the fuel delivery with the injectors is much more intense then with a carb. If you have not got it to learn yet then you are for sure running a little rich I would imagine.

My targets currently are 13.6 idle, 14.2 cruise and 12.8 WOT. I run a +2 ACCEL setting.

Put some paper on the radiator or something to get some heat into it until you can get it learn a little.

Timing was set with a carb (didn't have the $$ for efi). I'll try the plug route first and see what I get. I've got less than 75 miles on this system so I'm guessing i shouldn't worry about the o2 sensor yet

You may have fouled out that 02 sensor if it has been way rich the entire 75 miles + idling. Would dropping the pressure to about 34-38 lbs. help?
We are putting dual EZ throttle bodies on a 426 Hemi and the tech at FAST said to start at 32lbs.

Brad

It seems from reading the OPs replies that he hasn't caught on to the fact that even if he gets it running, with the low temp thermostat that's in there right now, the system will be in "cold-start" mode forever.

There is a minimum water temperature to get the system into normal mode. I'd suggest starting with a 192 degree thermostat.

R.

I was trying to figure out how to say that without offending ...

well i swapped the plugs and it cold started better. after 15 mins of idle time it cut off and wouldn't start. Quick black of carb gumout and it started. Spitted, sputtered and backfired all the way around the neighborhood and almost stalled at every stop sign. At this point the car was finally running around 175-185 degrees. after 10 laps around the hood it had less issues so I took it out to the main road and ran it through the gears. Backfired like a mothertrucker. Pulled into driveway and put it into park car no idles at 1400 rpms not 850.

at least 180 t stat & make sure the map sensor is on manifold vacume

Can you run us through how you did the initial set-up with the hand-held? What are your IAC numbers at idle? Where do you have your Key on source power too? These systems are not as "EZ" as it sounds, so the more info the better.

You should not see 1400rpm's unless you have somehow opened the butterfly's on the throttle body or you have some serious interference with your 12v signal.

I never had an issue with my system.....I installed it myself though, so I confidently know where to go if something is a miss. Sounds to me you need to have whomever installed the system, take another go at it.

did the set up as the computer told me to. Pretty cut and dry. The guy who installed it has installed over 20 system before he got to mine...the problem with having him look at it again is that I moved 800 miles away from where I had it installed. I'll see what happen tomorrow when I get a chance to play with it more between the rain drops. Don't remember IAC numbers will double check tomorrow too.

Today I checked the plugs after all the backfiring, 2 or three plugs need a little cleaning but now the car won't even start. Turns over and get one good "vroom" then dies. The coil is brand new but maybe I killed it already. This sucks the whole purpose of the efi and new wiring harness was to not pi$$ me off about owning this car

You guys are making me nervous. All I have left is plumbing the fuel system and I will be ready to go.