1990 Nissan Pickup (D21) Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Nissan Pickup (D21)
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1990 Nissan Pickup (D21) ProblemsTicking Noise When Cold Due to Broken Exhaust Manifold Studs
The exhaust manifold on the 3.0 liter engine often warps and cracks, breaking off the studs between the cylinder head and the exhaust manifold. The noise may be most noticeable when the engine is cold.
1990 Nissan Pickup (D21) QuestionsWhy does the engine jerk at 2750 rpm all the time? (1 answer)
Replaced rotor, cap, wires, plugs, fuel filter on fender and MAF sensor.
Removed muffler and catalytic converter.
Also replaced the blown head gasket.
Any time the engine revs to 2750 rpm (moving or sitting still) it jerks yet up to that rpm it runs fine.
I replaced the ignition switch and the starter relay. I try to turn it over and it just clicks once from the ignition area in the cab. I also checked the clutch safety switch and it's good. I took the starter/selinoid off and had it tested, it's good. I can start the vehicle if I touch a ...
Engine stumbles on acceleration. Using more fuel than normal. Recently replaced Throttle positioning senor because it was throwing a code. Help!