Well, I bought myself an '04 Nissan Frontier a month ago.
For those of you who remember, after removing a throttle body spacer I had made (~3/8" wooden spacer that I think probably hurt performance more than anything) and checking compression (which was 150-160 psi in all four cylinders -- # 4 was 60 psi before a bad exhaust valve change), my '90 Tracker would not start. And the tach registered ZERO while cranking.
It was quite maddening. The week before I had spent about 15 hours replacing the water pump, crank & cam seals, distributor seal, timing belt, #4 exhaust valve, and putting in the throttle body spacer, and it was running better than ever before for about 1-1/2 weeks (300 miles) before I broke it
I tried to figure it out for over 5 hours before I gave up and got my Nissan (I know, that was impulsive, but that's too long a story for here). I was leaning toward ECU because the ECU seemed to be receiving a tach signal, but I was also thinking an electircal problem with the distributor or somewhere between there and the ECU.
Well, I gave the Tracker to my brother who took it to a shop and it turned out to be the pickup coil in the distributor. It's back on the road again and will hopefully serve him well for a while.
I'd like to thank everyone who has helped me and I hope I've been able to return the favor to others.
Best wishes to all.
Oh, my Nissan is a 4x2
