I've read through all the other threads and haven't found my answer yet. I have just replaced the long block, but my problem existed before the swap. I have tried swapping from another truck: MAF, Distributor, coil/ignitor, ECU, Pressure regulator, the large vacuum lines, the VSV. Has new Filter, pump and injectors. Problem duplicates when TPS is disconnected.

Does anyone know if the solenoid resistor can cause a problem like this. The book says it should measure 2-3 ohms, and mine measures 3.3 ohms.

Any help from experienced owners is appreciated.

 

I posted to your other post but I'll re-direct here....

verify the piping between the throttle body and air flow meter is connected securely and there are no cracks in the rubber boots.

 

I appreciate the help, and had checked that before posting here. My friend had actually seen that problem on another truck before. I you look at the other thread, I found that the copper washer and banjo bolt were the culprit and never noticed until tonight.

 

If your 22RE has a Fuel Damper bolt that attaches the fuel line to the Fuel Rail through a banjo fitting and you are experiencing hesitation, You should check to make sure it is not blocked by the copper seal. For some reason the one on my truck is different from my friends same model year. His was square at the passage way and had a larger washer. Here is a picture.

Hope this may help others.

 

Yeah.....that's not a problem you hear of often. Good to know.

 

I think Toyota did a little service campaign, or maybe it was a running assembly line change, on the fuel pulsation dampener, because it was found they could fail and start making noise. The change either elliminated it or somehow otherwise changed the design... I'll have to go look it up. That would account for the differences between your two dampeners.

as a side note- the pulsation dampener is there to absorb surges or pulses from the fuel pump (since fluids are mostly incompressible) ... basically to absorb minor fluctuations in fuel pressure that the pressure regulator couldn't cope with but could affect fuel delivery through the injectors.