Engine low power

1985 Nissan Truck 4 cyl Four Wheel Drive Manual

How to adjust the accelerator cable?

Should the ECM provide codes for this and how would you access them? I looked at the ECM and it has a switch on the side and a window with red/green lights, but could not get it to respond.

The haynes manual says to set the switch to the "display" mode (switch only has 2 positions -run & display) in the display mode the red and green lights are supposed to flash one at a time to generate the stored codes, but nothing happens.

Engine Mechanical problem
1987 Nissan Truck 6 cyl Four Wheel Drive Automatic 107000 miles

Thiis is my 2nd attempt to get an answer to my problem. No responses to the first time even after a donation was made.

My 1987 Nissan SEV6 4WD truck (107,000 miles) starts and idles perfectly. However, when you give press the accelerator, the engine begins to accelerate then falls off in a repeated, rythymic pattern. I've replaced the fuel filter, but no change.

I'm looking for help on this one PLEASE!

OK, then my main concern is for the lack of power to the distributor. This engine has the double plugs and 2 coils -which are obviously working as the engine does run. However the only other wire to the distributor goes to a spade plug at the base of the distributor. I assume this goes to the crank angle sensor - anyway, the manual says it should have voltage and it does not at any time. Using ohm meter traced the wire back to a relay which has power but must not be getting activated or something. Relay has been checked and is good. Am thinking it must need a signal to energize the circuit. If this is the crank angle sensor and it does not work, it would explain the symptoms shown. How can I test the sensor/relay or?

Tim.

The truck idles perfectly, but when you give it gas, this is when the surging/falling begins. The more gas you give it, the more violent the effect. If you give it enough gas it will eventually die.

The truck is not driveable due to this problem. Any help you can give would be a help. Two donations have now been made.

Well, the ecm did flash a code of sorts. It went through a sequence of 1, 2, 3, 4, 5 then repeats. However haven't been able to locate a list of codes for this model. Also, found that disconnecting either of the two coils makes it run much smoother. Close examination of the plug wires shows several spot that are worn thin on the insulation so will replace wires, plugs, cap& rotor.

Good call Tim. The engive revs right up when starting fluid is spraying in. I'm going to drop the tank and replace the fuel pump and see what happens. Thanks!

Engine Performance problem
1989 Nissan Truck 6 cyl Two Wheel Drive Manual 348000 miles

My 1989 Nissan truck has started sputtering and losing power. Most of the time it will seem to start out fine, but by thiird gear it starts losing power. Tonight it would not even start again and left me stuck on the road.

Replaced plugs, wires, rotor & cap: still runs rough with both coils active, smooth with just one - doesn't matter which one is unplugged or if you run it on the intake or exhaust side plugs. Also noticed that the large "biscuit" round 6" dia. With large hose connecting to the AVI controler and the exhaust gurgles like it has water in it. There is also large water drops beneath this unit