On way back from meeting going along M20 at 70 mph no problem.

 

Came off Mway & engine starts to hesitatate put throttle down picks up,

Take foot off gas engine fades then picks up!

 

Get home engine on idle 1000rpm smooth.

 

Take revs to 2000rpm engine drops to 1700 then back to 2000!

 

This happens up to 4500rpm same thing engine drops then picks up!

 

At 5000rpm it remains at 5000!

 

Where do I start looking?:confused:

yeah, usual easy things first..

 

1 - check all connectors for corrosion and damage.. MAF, CAS, TPS, PTU, ECU, coils, injectors .. etc..

 

2 - do the 6P's

 

http://www.twinturbo.net/nissan/300zx/forums/technical/view/922678/The-6-Ps-Proper-Preparation-Prevents-Piss-Poor-Performancegt.html

 

3 - it could also be fuel related... check for leaks around the plenum.... then filter, fuel ecu and pump..

 

If still not resolved you need to take it to someone who knows Zeds.. :)

Edited August 28, 201411 yr by Medallion Man

I have as said WD40 most connectors I could get to!

Also cleaned the MAF as suggested by Gerry.

It's a transformation in the cars running!

Auto box changing smoooothly & no irrational idle!

It is amazing!

Is my number plate crooked:)

I use contact cleaner and one of those fibreglass circuit board prep pens from maplin. You need to get all the surface corrosion off the pins. Wd40 will evaporate eventually and you will be back to square 1. Clean first then wd40 imo

Looked at all the pins for corrosion before replacing them!

It's so frustrating that connectors are so fragile or difficult to pull apart!

All things that go with owning a Z:confused1:

Went to eurocarparts today for air & oil filters.

Received 2 complements about the car!

Get me another 23 year old car that gets sooooo much attention:yes: