Fuel pump info needed Options

[Fujifilm]

OK here goes, I am at the stage where I am going to scrap the car I am so sick of it. Have posted on another forum but had no luck so hoping someone can give me an idea.

The car is a 1995 convertible (uk) 2.0 gt manual which is the 3S-GE engine with 70,000 miles and full toyota service history.

The symptoms are, from cold it will hesitate but not always straight away, could drive half mile before it does it. When it does I can have my foot to the floor and nothing happens. Then it surges and the car will run perfectly. EXCEPT if trying to drive at 20 or 30 mph it runs rough like its in the wrong gear. Driving at 35 and above it runs perfectly, Just to add to the problem, occasionally if I reverse and stop the idle will fluctuate and stall.

Jumping the diag pins shows no faults!

So far I have changed complete throttle body with sensors from a car that was known to run perfectly.
Fuel filter, water temp sensor, air temp sensor, spark plugs, distributor cap, rotar arm, thermostat.

As far as I can tell all vacuum hoses look OK

I am stumped for ideas.

Help appreciated.
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This post has been edited by Fujifilm: Aug 28, 2014 - 2:57 PM

[Fujifilm]

Apologys for not getting back sooner...

Just to recap, I have eliminated throttle body and sensors, changed it with a known working one, changed fuel filter, spark plugs, distributor cap, rotor arm, air temp sensor, water temp sensor, thermostat.

The mileage is just short of 70,000 and timing belt was changed at 60k by Toyota.

Not getting anywhere I decided to chuck in a tin of injector cleaner into the tank. For three days I had no surging in the morning and idle was ok, at 30 mph it was better but not good.

Half tank of fuel later I am getting the surge but not as bad, I have had it cut out twice after driving for ten minutes, at 20 or 30 mph it kangaroos quite badly.

I am now thinking either its injectors or the filter in the tank, I am positive maybe wrongly that its fuel related. My next planis once I have used most of the fuel to pull out the fuel pump and check filter. Not sure if there is anything I can test.

If that fails I will remove the injectors and have them reconditioned.

If that fails I will just break it for parts as I am now sick of it
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