My engine runs lean while driving, just a short time after starting.
But idle is fine, and when pressing the clutch easily so the clutch switch is pressed,
it is a bit better.

I amplified the boost signal, and the engine ran better/ richer so I could drive.

But when driving over hard bumps sometimes it doesnt fire at all for one sec,
I have also seen the rev meter to drop to zero while this.
It started with the 3400 hesitations ( Rtek 1.5 )
and it has gotten worse and worse, and now its really anoying to drive.

Is this a known problem, or do I have to search on my own.

I already got new sparks.
Maybe its a wiring probem ?
ECU switches off for short time ?

-Patrick

 

how did you adjust the boost signal

 

The ground wires that connect to the intake manifold or under it (depending on the engine series) are corroded. Take them off and very carefully clean them and you will fix that problem, as to fixing the lean mixture, adjust your variable resistor in front of your passengers shock tower.

If you want more info, search for 3800 rom hesitation or read the faq under the same heading.

 

the variable resistor only adjusts the mixture at idle, not anywhere else, so that wont help. I think that grounding may help the lean condition too, just in case the ECU is not reading the signals from sensors properly due to a dirty signal ground