New injectors, MAF, fuel pump & FP reg: car won't idle or run

[ponycar17]

I had a similar problem with my 30s on my NA car after I installed them. The car would run if I stayed in the throttle, but would quickly shut off. It was also doing some weird backfiring when i reved it up... We checked everything, and I finally swapped my C&L calibrated for 30s to my friend's Pro-M that was calibrated for 30s, and voila, the problems went away instantly. Since his car was down for a while, I ran the Pro-M for a while. Suprisingly, after I swapped back to the C&L it ran good again. It was odd, but I guess one meter allowed the car to learn the new setup because it let the car run leaner. If you haven't tried this yet, it might be worthwhile... Rotate the MAF about 90 degrees AWAY from where you think the most incoming air would be in contact with the filament (this will rotate the sensor toward the outer fender on a NA car with a cold air kit). This will lean the car out a little. If it helps, you've found the problem... I've seen as much as a 500 millivolt difference by moving my MAF sensor INTO the airflow (toward the motor on a NA car with a cold air kit), so maybe moving away from the airflow would help in this case?... I watched this with my MAF Tuner software, so I know the readings were consistent...

 

[ALMOST STOCK]

Did I miss something? You have or you have not changed the external fuel filter?

If you haven't that would be the first place I'd look!

 

[Ozz]

I have not changed it nor even knew it was there. That's the problem when you do all these things for the first time, you don't know anything.

So where is this thing? I bet I have to drop the tank again, huh?

 

[NeQX]

Oh Okay so it's one of the following then

A) Fuel pump wired incorrectly

B) Fuel pressure out of wack, regulator vacuum not set up properly

C) Bad MAF

Start narrowing it down!

 

[ALMOST STOCK]

You don't have to drop the fuel tank!
Look at the front side of the gas tank between the rear end and the gas tank it's attached to the underside of the floor. Or follow you fuel lines from in front of the rear tire and the lines will take you right to it.
Just remove the nylon clips and unscrew the clamp that's holding on the bracket.

 

[Ozz]

IT RUNS! Fuel filter replaced, car runs great. Thanks all!

 

[ALMOST STOCK]

Glad to hear you've got it RUNNING! No more Something as simple as a fuel filter

 

[ponycar17]

And I had to climb under the car to take that pic... You owe me now...

 

[Ozz]

Haha, thank you very much.

Honsetly, my girlfriend and I want to move down to your area, but that won't happen for a few years at the absolute least. But if and when we do, we'll have to get you a favor taken care of

 

[ponycar17]

Haha, j/k man... glad to hear it's working well now.

 

[Ozz]

I know, but we're really wanting to move down to NC/SC/VA area - not sure where yet. Where are you in SC? Did you live there your whole life or move there (and from where)?

AH, questions!

 

[ponycar17]

I know, but we're really wanting to move down to NC/SC/VA area - not sure where yet. Where are you in SC? Did you live there your whole life or move there (and from where)?

AH, questions!

I've lived here my entire life... I'm in the Upstate area, where basically all the jobs are... PM me if you've got any questions.

There is one thing you have to remember though.... Don't tell us, "how you did it up north.... we don't care..."... There are bumper stickers to that effect... Funny stuff!... Seriously, I work with a couple of people who have moved from Rochester, NY, and they're VERY happy here...

 

[Roast'em]

I think you must've broken loose some dirt/silt from the bottom of the fuel tank when you changed the pump. Then you had only 2 gallons of dirty gas and that 255 shot it right into the filter clogging it up.

I diagnose problems after they get fixed. woo hoo

 

[Ozz]

LOL good call Where were you a month ago?