Would a fuel pump that's either going out, or that has a clogged pickup, exibit the same symptoms as an errant TPS?

I was having TPS problems, adjusted it to within spec, and drove it a little bit. A couple of blocks from home I started having some surging and - what feels like - fuel loss; On and Off power, what sounds like double sputter, and MAD jerkiness.

Odd thing, though, When my foots on it, applying constant pressure, the car drives fine. As soon as I let off - in gear - even a little bit, it starts to do that damned herky-jerky.

Could it be the pick up?

I just did a pretty stable tune-up: Changed air filter, Fuel filter (contents of which were BROWN), and 4 new spark plugs. When I initally started it, afterwards, it sounded GREAT (in comparison), and drove for a little while. Then THIS problem.




Ant

 

If your filter's clogging, she would drive fine at idle and low speeds, then jerk when you asked for more fuel, so that doesn't sound like your prob...

Did you check the TPS out through the full range?

 

Man sounds like a bad TPS to me. That makes 2 votes on TPS.

 

Yeah. I checked the TPS, earlier, today, and it came back fine; adjusted, and all.


I even jumpered the fuel pump, to make sure it wasn't electrical....

Check out my NEXT post. You guys'll get a KICK out of THIS...

 

Oh, humanity of it all...

Http://www.shadowmotorsports.com/other/DSC00999.JPG
Http://www.shadowmotorsports.com/other/DSC01004.JPG
Http://www.shadowmotorsports.com/other/DSC01005.JPG
Http://www.shadowmotorsports.com/other/DSC01006.JPG
Http://www.shadowmotorsports.com/other/DSC01007.JPG
Http://www.shadowmotorsports.com/other/DSC01008.JPG
Http://www.shadowmotorsports.com/other/DSC01009.JPG

These are about 10 Megs, each, but kinda worth it.... Sorry about the size.

Http://www.shadowmotorsports.com/other/MOV01011.MPG
Http://www.shadowmotorsports.com/other/MOV01010.MPG



This goes to show you what, Boys and Girls?


a) Never buy a car from rednecks;
b) Never trust a deal for 150 bux;
c) Never do the sock-job;
d) All the above


$150 bux + 400, and running....




Guess I need to check the tank, itself, huh?

Don't even want to THINK how much a new tank's gonna cost....
Anybody gotta better FP for cheap? I found a Walbro 255LPH for about $100 on E.Bay...

Anybody beat that cost for better than stock?



Oh, BTW: IT REALLY DOES HAVE THE REEBOK LOGO ON IT!

 

Actually... It's the exact OPPSITE.

 

ACTUALLY it is the exsact oppsite!

 

So you're telling me if the fuel filter's clogged, she'll drive great at high power, but bog down at idle, huh?

Have you ever driven with a clogged filter???

 

Dood.... Didja LOOK at the pictures!??!


That sucker was clogged worse than Paris Hilton on an day that ends in "y"!!!!


Oh...wait.... Not the FUEL FILTER. I just changed that out. That's new, and was filled with dirty. brown gas. The Pump's PICKUP filter was clogged, not the actual inline filter.

Sorry for the miscomm.

 

hmmmm....kinda sounds like a driveshaft thats about to break in to peices, but what do i know?

 

Huh?

 

LMAO! That is a classic. Thanks for the chuckle of the day. Now I know where is that spare sock is that I couldn't find?

 

He's telling you that you might try to replace the sock/strainer on the fuel pump.

It sounds like a tps problem also, but do the sock first since you said you checked the tps.

 

This car has a Carter Fuel pump! Sweet, and shitty... Both at the same time.

Trying to find JUST the SOCK (No comments)is a pain...

 

Umm, you have to pull the pump out of the tank...

But you already knew that, didn't you?

I presume you mean find a good replacement sock, right?

 

Yup. Knew that. That's already done. Did that lastnight.

Yeah, a replacement sock isin order. And I'm not talkin' going from athletic to dress, either.

Found out that there was a little adaptor from the pump to a different kind of sock. I spent all morning trying to replace THAT sock. I removed the adaptor, and replaced it w/ a new sock...

Sucker fired up. Sputtered a little after I primed it, and it's running well... For now.

 

Here's what I scooped out of my gas tank:

http://shadowmotorsports.com/other/DSC01013.JPG

Part of an accumutive 1/3 cup...

Ew.

Gas tanks, cheap??? Anyone?

 

Yeah... I changed my socks (Ha, ha), and just readjusted the TPS.

1.1 kO @ idle;
5.8 kO @ WOT

It idles fine w/ it disconnected, rough when connected. Guess I should change that, Ja?

What lead on the ECU is the signal wire for the TPS? I read someplace to try and both V and O the lead at the ECU. Location? Readings?

??

Hm.


Ant

 

You should have a drain plug on the tank. Get some solvent that's better than gas (acetone, MEK), pour it all in, shake the tank around, and drain. Repeat as necessary...

The TPS input is in your FSM, section 4A. Can you tell I don't have my schematics on me right now, lol...I'll get 'em later if Hailers or someone doesn't chime in with the pin info...

 

Dude..

You had a SOCK in your tank... WHAT THE F%&K?

And you MIGHT be better off just getting another fuel tank.

 

Sweet.

Well... I just did a fail-safe experiment....

Checked idle w/ TPS IN, and then pulled it. Bitch smoothed right out.

Bad TPS.

Damn. Anyone got an extra they'd be willing to donate?


Ant

 

Pin 2G for the TPS input to the ECU, if that is in fact what you are asking.

Lazy Wayne, lazy....

 

It's HOT out there, man, and I had to park far away today

 

And pin 2g is....Where?

 

All right, since Rat won't do his job, I will...

Facing the ECU, the middle plug (medium-sized one), top row of wires, 4th one from the right. Should be a green/ red wire...

Need 1 volt there at a warm 750 rpm idle. Adjust idle screw as necessary to attain the 1 volt...