Low RPMs bucking - ZR-1 Net Registry Forums

MuRCieLaGo · 05-09-2016

Hi,

'91 ZR-1.

Valet key always ON.

I'm getting severe buckings at WOT when I'm under 3,500 RPM. High RPM is fine, pulls strong.

For 3 or 4 miles this morning the car felt like it was running on 7 cylinders, from 1,000 RPM to 7,000 RPM. I took a 400 miles ride and it never happened again. Fuel consumption was good.

However, the low RPMs bucking is still happening. It's been like this since I bought the car 3,000 miles ago. Warm or not.

New from this year though: sometimes, the RPM needle would jump from 4,000 RPM to 1,000 RPM suddenly only for a moment (total power loss), then immediately comes back to 4,000 RPM. Happens especially when the car isn't fully warmed up yet.

No SES light.

I electrically tested the injectors last fall and everything was perfect.

You guys got an idea? Is it normal to get bucking at low RPMs?

05-09-2016	#1
MuRCieLaGo Join Date: Aug 2014 Location: Trois-Rivieres (QC) Posts: 473	Low RPMs bucking Hi, '91 ZR-1. Valet key always ON. I'm getting severe buckings at WOT when I'm under 3,500 RPM. High RPM is fine, pulls strong. For 3 or 4 miles this morning the car felt like it was running on 7 cylinders, from 1,000 RPM to 7,000 RPM. I took a 400 miles ride and it never happened again. Fuel consumption was good. However, the low RPMs bucking is still happening. It's been like this since I bought the car 3,000 miles ago. Warm or not. New from this year though: sometimes, the RPM needle would jump from 4,000 RPM to 1,000 RPM suddenly only for a moment (total power loss), then immediately comes back to 4,000 RPM. Happens especially when the car isn't fully warmed up yet. No SES light. I electrically tested the injectors last fall and everything was perfect. You guys got an idea? Is it normal to get bucking at low RPMs? Last edited by MuRCieLaGo; 05-09-2016 at 12:24 PM.