ghostgxz

Update

Earlier on i checked the ecm, and found it to be bad, but after looking at the fsm i realized i was testing it with the ecm "upside down", if that makes sense, after checking it again, the e1 to ground measured 7 ohms, i also checked the tps and the vafm, and both checked out as good,

next i checked the tps at the ecm harness, one of the tests has you test between two terminals with the key in the on position and with the throttle closed it should measure around 4 volts, and with the throttle fully open, it shouod be around 0.2 to 0.5 volts, well at fully open it was still 4.02 volts

Even after telling my dad this, he took it to a well known mechanic that worked for toyota for over 20 years, and he narowed it down to the wiring harness, so its fixed, but my dad wont be able to pick it up until the morning but the mechanic said it runs perfect , so i will post another update tomorrow

ghostgxz

Ok, we went to pick it up, and when we drove off, it still had the same.problem, so my dad left it with the mechanic again, and he did a fuel pressure test and it was at 50 psi, and when he would hit the throttle, the fuel pressure would drop way down, so it turned out to be the fuel pressure damper, so now it runs good again, for a 3.slo that is

Gamefreakgc

THAT'S where it attaches? No wonder my truck was acting up.... I was just doing some work on it today and found that ground was loose, turns out the threads were stripped and the bolt was half-out. My truck would effectively turn-off every 15 minutes for like half a second then jerk back on, been doing it ever since I got it. I checked every ground but couldn't reach that one until today.

Sorry for the thread jack, just had to share that since it made my day.

rrussell14

Sounds like timming is off ??thats what my 1993 22r pick up did Before I set with a Timming light.Has distributure goton wet or mest with that you know of?

ghostgxz

Here is a descriptive article about how a bad fuel damper will cause hesitation/falling on face symptoms

http://forums.hybridz.org/topic/70163-fuel-damper/

ghostgxz

Hey dont worry, you didnt really jack the thread, i came to a conclusion on what the problem was, so any more posts will effectively keep this thread at the top of the forum, which will help other people to see what my problem was and what the fix was, and to know what it wasn't

Edit: glad i could help, and thanks again to everyone who put in there $0.02

machineslave

i agree