Hi,

I come to you for an intractable problem for several months on my Aston, ie far too much wealth from 4,000 rpm.
Synopsis:
when crossing the tsc on the bench, it was found that a lot of power missing. After another test on another bench later, the problem remains the same, namely, from 4,000 rpm, wealth surged to dangerous proportions in the engine.

This morning, I remade the test Aston Riviera (see values ​​for control of pollution). There should be constant over a wide speed range (1,000 to 6,000 kinds of revolutions per minute) between 0 and 0.5. From 1000 to 3'0000 and some rpm, everything is perfect, from 4,000 rpm, the values ​​start to panic and the 6.5 to 7.5, more than 10 times the correct value. In summary, the engine is too rich from the famous 4,000 rpm.
For information manager, we tested the two exhausts separately.

Were tested:
ECU, intake, exhaust, cylinder compression, spark plugs, injectors, ignition coils.
It is the lambda sensors, but there is no error code in the suitcase and the cataliseurs (which are 200 cells instead of the 600 original cells).

If someone had this trouble or has an idea, I'm all ears!

Thank you!

Vincent

 

uhhhh ... I assume this was done in google translate from another language and we are suppose to replace "wealth" with "rich" correct?

If your car is running RICH after 4000rpm ... that is completely normal on these astons. They run horrifically rich stock. The only way to fix it is with an aftermarket ECU upgrade.

Your car is perfectly healthy (and "wealthy") .... so no worries


007
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Yes, rich, sorry

No, this is absolutely not normal! It has been tested on two other Vantage and everything is perfect! In addition, bench, it less than 355 hp. My Aston mechanic tells me there is a big problem. In propostion, but pollution levels 15 times higher than other tested Vantage! So no, it's really not normal and a car too rich can lead to engine failure in the long term and a loss of compression.

 

I am running 9:1 air fuels... i highly doubt you are running any richer than I. Your mechanic is being a bit of a fear monger it appears. These cars are notorious for running rich above 4000 rpm. Once the ecu is retuned you will be running much better
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HotAlexiss

 

I urge you to move your car on a dyno ....a car too rich has less power...

 

obviously haha ... we all have that problem. Custom dyno tune is being worked on as we speak but it will take a bit of time.
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I just spent my car dyno and lacks between 55 and 60 hp

Help please.....

 

Please post dyno and air/fuel ratios

 

Of course:
The ratios:


I post the dino later

 

That comes out to 9.98:1 at redline.... your car is completely normal and well within reason. my car is way worse, I am hitting the same airfuel ratio at only 4000 rpm and it keeps dropping.

Hope that helps,
007
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the curve:

 

BTW RHP is not the same as BHP. What is your car running to the rear wheels?

 

Sorry, i'm not understand the question.

For information, the dyno and the ratio were not done at the same time, but it is on the same car.

 

your car looks 100% healthy. 289.9 is good number, and torque comes in at roughly 266 ft lbs at the wheels.

My car made 292HP@wheels on loading dyno so that's right on part with where the car should be.

I think you should just take a deep breathe and big sigh of relief that your car is functioning perfectly normal

Enjoy the car and stop worrying
________
The Sanctuary of Truth Wong Amat

 

Unfortunately not ...

I can set you up for regular dyno and you'll see the difference ....

A power of 320 hp at the wheels is normal. Below, there is a power problem. A power of 290 hp at the wheels is about 335 hp engine.

You can ask Stuart rsc who knows well the Vantage for advice.

I would really like you ais right, but unfortunately, this dyno and the ratios proves that there is a (big) problem.