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What can be the cause of a 91 Toyota V6 pickup truck to be going down the road and it feels like its losing power and you'll have to hold the pedal to the floor then it takes off and straightens out for a few then starts doing it again... Then whenever you cut the truck off and let it sit for about 5 or 10 minutes and try to start it back up it starts running rough and floods out and if you let it sit for about an hour or two after it floods out it will start right up and fine...?

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SOURCE: car cuts off going down the road, won't stay cranked

crank sensor or fuel pump call A MOBILE MECHANIC as its not the sort of thing thats easly diagnosed from a description sorry

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SOURCE: 1988 honda accord runs for 10-20 min, then loses engine power

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SOURCE: 91 Toyota 4runner runs rough once warmed up at a

ive had a problem like this before it turned out being a shim under the camshaft worn and when idle it wasn't pushing the valve down properly.all it took was shimming it out.might want to check that out pending your mileage.

Posted on Jul 13, 2010

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What can be the cause of a 91 Toyota V6 pickup truck to be going down the road and it feels like its losing power and you have to hold the pedal to the floor then it will straight now for a little bit and...

There are several possibilities. I assume the service engine light is on, indicating the engine computer knows there is a problem. If so, get a readout of the code; this will help you narrow down the problem area.

One possibility is a blown fuel pressure regulator; this can cause hard starting and flooding. Often, when the engine is cold, you can smell raw gasoline in the exhaust. Fuel injector problems can do the same thing, and could possibly cause poor performance. The engine computer would flag mixture problems.

Another possibility is a carboned-up EGR valve or exhaust manifold.

In very humid or rainy weather, a failing oxygen sensor causes poor performance, but usually does not affect starting.

Also, in humid weather, especially if there is precipitation, a failing ignition coil will cause all of these symptoms. If you have had excessively worn spark plugs, the wide gaps can cause coil breakdown as well as poor starting. That will set up this failure mode. You may get misfire or other ignition codes from the engine computer.

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Could use a advice on my 91 3.0 ranger no spark

One reason your 91 Toyota pickup 3.0 v6 has no spark is because you battery could be dead.---------------------------------------------------------------------------------
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Mar 13, 2013 | Cars & Trucks

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I have a 89 toyota pickup 4 speed. When I'm stopped at a stop light, and let out on the clutch it seems like it has lost pressure. When I'm shifting down the road it shifts fine. I checked the fluid and it...

this sounds like the clutch slave is goin out, this unit is on the outside of the transmission. Possibly losing pressure!! Your transmission does not use transmission fluid, but instead gear oil. Have the following checked:
1. Clutch Slave (possibly worn)-this will cause soft or hard clutch pedal feel, slipping clutch, unintended clutch release, hard gear engagement, no/insufficient clutch movement.

*2. Clutch pedal Mounting Plate (possibly cracked)-this will cause improper gear engagement, hard gear engagement, soft pedal feel, insufficient clutch movement.

*this plate is located above the clutch pedal itself, apply pressure on the pedal with one hand while inspecting the plate for fatigue cracks(use a bright flashlight). This is very common on these models. This problem will eventually get worst and most mechanics never figure this out.

more questions email me at!!

Mar 15, 2010 | 1989 Toyota Pickup SR5

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1988 toyota efi 4x4 lags on excelleration unless floored

I have an ' 86, same stuff.
Sound like a sensor thing alright. I would check the Throttle Position Sensor and the Mass Air Flow Sensor.

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Truck lacks power

Check the fuel filter (could be plugged) or it might possibly need a new catalytic converter.

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