Post by
nissanconvert »
https://forums.nicoclub.com/nissanconvert-u33061.html
Thu Jun 07, 2007 9:23 pm
So she decided as of late that the harder the gas pedal is pushed the slower it should accelerate. Starting on a hot day = no. cruise control decided that holding any speed is silly and it should drop 10mph at random. Stopping at lights mean take a brake and quit running. going more then 40mph up any incline is impossible. This car never had power past 3k rpms and I was wondering why since my old teg had less hp yet much more zip. Time for some work to see why i can't ever break 70-mph on th highway.
Step 1: battery, wires plugs, other sensors, filters, grounds, vacuum lines etc. all check out. The 100k mile distributor cap and rotor were badly corroded so a new set was installed. No change in running.
Step 2: install O2 sensor which clears code 33. All problems exist still except a bit smoother running and cruise holds speed now.
Step 4: replaced knock sensor to clear code 34. Whoa, new found power at 2-3k rpms but still dropping off, no hesitation. still stalls and won't start when hot and makes a fool of me on a nice day.
Step 5: found that my fuel pressure was only 20psi on warm days. promptly replaced it with an el cheapo one from the local parts store just to see(i'm too impatient to wait for a walbro) WHOA! what a difference! it starts all the time, runs great and has crazy more horsepower all the way up through 6k rpm! This car is 100X more fun to drive with all the power working.
I'm surprised that with only 100k miles the fuel pump was giving up the ghost but glad I found the problem. That was the cheapest HP mod i will ever make, lol.
Finally I saw a vert today applebees today. That is only the second vert I've seen in person up here ever. I was amused.