Hi guy's. My Zed has been suffering recently with not so much as a missfire but it's like the engine is constantly being throttled off and back on when i'm on a constant throttle. I've replaced the injector, coil pack and water temp sensor connectors, tried a working maf, set the tps and still it does it. A few days ago we cleaned up the AAC? connector. it's the yellow one at the rear of the passenger side plenum. After this it was ok for the 10 or so mile blast we did in her but the day after it was back to the same?

 

It's a UK car so it couldn't be too much of a bad batch of BP Ultimate fuel to cause this. Cant hear any det. Just pops and bangs. If I hold the clutch down and rev the engine from idle a few times it is ok for a mile or so.

 

Please help me on this guy's - i'm at a loss

 

Ivan

what kind of rpm? or all the way through the rev band. If the o2 sensors are bad it coul feel like this, then when you go to full throttle it it'll be fine

I would check the 02 sensors matey for sure

Mine also does this, mine is a 92 j spec tt. Does it from around 4.5k - 5k right up to 7+k. Yesterday it dropped into saftey boost and I got code 53 (right o2 sensor) on ECU diag. John Dixon hooked me car up to consult a while ago and that showed a 'lazy' right o2 sensor. May be connections or new 02 sensor time.

Can you guys take a look at this, is this the right one and about the price. Seems expensive or am I just being a tight arse

 

http://www.quitegood.com/menu.php?seshid=673b7d8cd07d663dad5bf474501b7202&supplierRef=probedistributors&cat1=Motoring&cat2=Parts%20n%20Accessories-Distributors&category=NISSAN&subCategory=LAMBDA%20SENSORS&subSubCategory=300&subSubSubCategory=300ZX%203.0i%2024vVG30DETT------90-95

 

btw, sorry to high jack !

I had a similar problem that Jeff at Zedworld discovered to be a bad connection to the crank angle sensor (CAS). As you look at the engine it's on the front on the cam shaft furthest to the right. Give the black connector a wiggle whilst the engine is running (careful of all moving parts) and see if anything happens. Just touching the connector on mine caused the engine to stall.

 

If this turns out to be the problem remove the upper right hand boost pipe, disconnect the plug and give it a good clean. You never know - might be a cheap fix!

 

Rory

Can you guys take a look at this, is this the right one and about the price. Seems expensive or am I just being a tight arse

 

http://www.quitegood.com/menu.php?seshid=673b7d8cd07d663dad5bf474501b7202&supplierRef=probedistributors&cat1=Motoring&cat2=Parts%20n%20Accessories-Distributors&category=NISSAN&subCategory=LAMBDA%20SENSORS&subSubCategory=300&subSubSubCategory=300ZX%203.0i%2024vVG30DETT------90-95

 

btw, sorry to high jack !

try ryan at ztec for these sure there cheaper off him, and defo the right one's