coltonstewart

So im going down the highway the other day, going about 60 and the light turns red ahed. So I slow to like 50 and downshift into 3rd and I remember it just giving out as if i had accidentally put it into 5th and then noticed That I no longer had any juice under load...

It revs up slower, idles much slower and i can hardly get it above 40 mph. The more load there is the less gas i can give it as as if its starved for fuel. When i hit the throttle fast it studders and hiccups when i let off fast.

I should alo add that my truck has been having similar symptoms before the truck is warm operating temp. It would cut out easy and flood. It has done this ever since i owned it. Even since i rebuilt the engine a couple years back to fix a thrown main bearing.

I have already replaced the volume airflow meter. Autozone's computer wont give me a diagnostic code -worthless.

Please give me advice! I know you guys know your toyota stuff.

~ 3.0 3vze 92 pickup

Terrys87

iTrader: (1)

When was your last good tune up and you changed your fuel filter?

coltonstewart

I changed the fuel filter probably about 2 or 3 years ago

coltonstewart

I tried to get a diagnostic, both from the computer at auto zone and the manual method with the dash codes...

I HAVE NO CHECK ENGINE LIGHT at all during ignition I think my ECU might be toast?

rworegon

Is the bulb for the CEL good? Start the diagnostics for the fuel pump. And, check all hoses and intake for vacuum leak(s).

Kalihi,HI

Aloha from Hawaii, I've been dealing with a similar issue on my 3vze 94 pickup M/T, 4x4. I noticed a drop in power at higher speeds 35+mph where my RPMS would continue to increase, but my speed wouldn't. My fan pulley bracket then froze up, causing one of my belts to bust, so of course new fan pulley bracket and belt. I then changed my timing belt, water pump (was leaking), thermostat, PCV, VAFM (out of spec) and upper air duct/hose which had a huge crack in it, O2 sensor (out of spec), TPS (out of spec) and correctly adjusted it, replaced all 6 injectors with reman'ed Densos, new plenum gasket, throttle body gasket, cleaned out throttle body and plenum, new valve cover gaskets, replaced fuel pressure regulator cus fuel pressure was too high at 48-50 PSI and supposed to be 38-44PSI, replaced fuel filter. Truck runs better, but still loss of power, especially under load and going up hills, so bad I can't safely drive it, I had to coast back down a small hill that I couldn't make it up and truck almost died, so that I could get a running start going up it. Fuel pressure at delivery rail is now good at 38-40 PSI when key is turned to On and when truck is idling...However when the truck turned off, the fuel pressure drops to 0 in seconds, when the FSM says it should remain above 21 PSI for at least 5 minutes after turning off engine...I then switched my Headlight relay and EFI relay just for fun and tried starting, it started and idled fine, but check engine light came on with code 25: Air-Fuel ratio, lean malfunction (check engine light was not on before switching relays). Should my fuel pump be my next target? Are there any other tests before going in to change fuel pump? Does the drop in pressure mean I have a weak fuel pump or a leak in fuel system? I can't find any leaks. Any help is greatly appreciated..my trucks been out of duty for 2 months now. Mahalo!