3VZE cold start injector issues on my 4runner

[Latitude777]

Having trouble with the cold start injector and excess fuel usage/lack of power on my 92 toyota 4runner.

So i've had the car for nearly 6 months now and when i bought the car the guy i bought it off had the cold start injector disconnected. He gave me a reason but i cant remember the significance. After connecting it during winter, it ran better with more power above 4 grand and revved smoother through the rev range and used less fuel. When disconnected it struggled and bogged down above 4 g's...

Now here's my dilemma... The reverse now the weather is warmer is true. Bogging down over 4g's and using more fuel.. So i disconnected it again to see if thats the cause and then it seems to run smooth and rev freely above 4 g's again and consumption comes down.

Why would weather change the running of the vehicle when its only a cold start injector? My understanding is that the injector wasnt needed or used while the engine is warm?!

Any help/ideas?!

[Struth]

Not sure on your problem, but why do you think revving a 3VZE above 4gs is a good thing?

Cheers

[Latitude777]

Not sure on your problem, but why do you think revving a 3VZE above 4gs is a good thing?

Cheers

It's really only when I overtake that I notice it.. And excess fuel usage... The power curve drops off at 4 vs revving freely past 4 when it's running well. Just a clear comparison between good n bad. I'm not the sort o driver that takes pleasure in valve bouncing or redlining if that's what you are referring too. The v6 is thirsty enough as it is let alone redlining every gear.

[Struth]

Thats good, I found 3500 rpm was adequate in most cases with the 3VZE that's all.

Not sure but I would think the cold start injector should only operate on cold starts and switch off once the engine is warmed up.

But again not sure.

Go over here and ask the same question and you are bound to get a good answer.

http://www.toyotasurf.asn.au/forum/" onclick="window.open(this.href);return false;

Cheers