I have a problem that no one can seem to figure out!!

[Steve Wood]

35 with the hose on the regulator and the car running?   maf and blms are correct.  Be sure the car is warmed up and in closed loop otherwise those numbers may change

[we4turbobuick]

Ok, i noticed something when i unplug the translator from the harness it will idle fine ..... plug it back up it and i have a bad running car ....... if i leave the translator plugged into the harness and unplug the maf i still have a crappy running car. what do you think ?

[we4turbobuick]

35 with the hose on the regulator and the car running?   maf and blms are correct.  Be sure the car is warmed up and in closed loop otherwise those numbers may change

Yes the fp is around 35..... it moves around 34 -35 psi cause the car is barely running if i give it any pedal at all it will just die.

[Scoobum]

I'm grasping at straws. Have you got the dip switches in the Translator set to on on on off...and do you have the base knob set correctly for your MAF?

[Steve Wood]

If the hose is on the regulator, then that is about the right fuel pressure.   If the car was warmed up...temperatu re above 160 degs, then the blms were right and the maf was reading properly for idle.  What does not fit into the above is an o2 reading of 000

[Scoobum]

Steve, I know you hate throwing parts at these cars...but going back...he hasn't swapped out the 02 sensor.

[Steve Wood]

Cheapest thing he can throw.   I don't like any thing other than the single wire sensor. Wonder why the Blms are not pegged tho


 

[Scoobum]

No idea. I saw Eric recommending to a gentleman yesterday to swap out the 02 sensor cuz it was locked at 400. Figured it was dead.

[Steve Wood]

yep, that makes sense.   but if the o2 is telling the ecm that the car is lean, the ecm should add a ton of fuel and put the blms at 150-that is what I can't wrap my arms around

A denso is cheap...worth a try

[Scoobum]

Lots of things I don't think about. I reinstalled the transmission back in that 79 Trans Am. Starter wouldn't kick over. Pull it back out and put 12 volts to it and ground the body of it and it flies out and spins. WTF?! Wires are fine that attach to it from the wiring harness. I slide underneath to check if there's any wire I forgot to attach...nothi ng...all accounted for. I notice what appears to be a factory ground wire attached to the sheet metal...and the end is tucked up under the frame. I pull it out and it makes a perfect route to one of the starter bolts. Starter has to be grounded to the sheet metal? Bolted it up...with the ground...spun out and engaged. The weird part...is that ground strap wasn't attached when I removed the starter when I pulled the transmission.. .and the starter was acting normally. I told myself out loud to not think about it. Thank God I'm not a deep thinker.

[we4turbobuick]

I'm grasping at straws. Have you got the dip switches in the Translator set to on on on off...and do you have the base knob set correctly for your MAF?

Yes, the jumpers are all set right the base is set correct the WOT is set @ 0 does this sound like a translator problem ? Does anyone know of a way to make sure the translator is working right? The car is running the same way when my maf connector came loose i plugged it back up and it was fine. What should be my next move?

[Steve Wood]

If the maf readings are correct...and the one at idle was correct....the n it is not a Translator problem

Need another point to be sure, tho...but that meant it was set right

[Steve Wood]

Just in case you have one of those cheap little fuel pressure gauges that usually are wrong...crank the fpr up to about 55 psi and see what happens

[we4turbobuick]

Since the o2`s are wacked out u think it can be the o2 sensor ? I just put it in a month ago. Think it could of went bad already ? I thought the heated o2`s were more durable than the single wire ones.......?

[Steve Wood]

that is probably not true.  The heated sensors warm up faster, but they don't fail like the regular sensor does.  they lose range and they don't always code like the one wire units.  I would doubt it is bad, but less than 20 bucks will get you a good Denso sensor made for your cars.

If the o2 is bad, the car will run okay until it warms up and goes into closed loop mode.

As the car is acting like it is not getting fuel, I suggested turning up the pressure and seeing if there is a change in how it tries to run.

I think I also asked if you had looked at the bottom of the ignition module to see if it was gooey/melted which would be a sign it was failing.  Maybe that was someone else