Alfa Romeo Forum banner

1 - 20 of 20 Posts

·
Registered
Joined
·
109 Posts
Discussion Starter · #1 ·
Had the cambelt replaced, didn't need to do the variator.

However now I am not getting the extra shove at 3k that I did before.

Why could this be?
 

·
Registered
Joined
·
39,284 Posts
Timing out or variator knackered.

Did you use the cam locking tools?

Also check everything is connected back up, it is easy to dislodge something without realising.
 

·
Registered
Joined
·
4,932 Posts
Who did the job and did they use the correct timing tools?
 

·
Registered
Joined
·
328 Posts
What GTV-TB said. Easily done if you are not careful and because the wiring tends to flop back in the same position, you don't always notice.
 

·
Registered
Joined
·
39,284 Posts
If I remember correctly you don't need to disconnect the cam timing solenoid to change the belt, unless you are going to replace it as well.
 

·
Registered
Joined
·
109 Posts
Discussion Starter · #9 ·
The job was done by AHM in Hartley Wintney - Hampshire. I will get on to them and get it looked into.

Thanks for all the help!
 

·
Registered
Joined
·
30,291 Posts
The job was done by AHM in Hartley Wintney - Hampshire. I will get on to them and get it looked into.
Maybe it is timed properly now, but wasn't before.
 

·
Registered
Joined
·
39,284 Posts
Maybe it is timed properly now, but wasn't before.
I agree with David, there shouldn't really be a surge in power at any RPM unless something is wrong.

Usually you get the illusion of a surge in power if you have lost it in part of the rev range.

The classic one is a surge at 5,000rpm or so due to a failed variator.

The power at the top is the same as before, but because you have lost midrange grunt, it feels like the car is "Coming on cam" and you are getting a power jump.
 

·
Registered
Joined
·
109 Posts
Discussion Starter · #14 ·
That is interesting, before (even at 1/2 throttle) there would be an appreciable gathering of speed in 1st or 2nd as I got past 3k. Was rather enjoyable, I thought they all did that - it was a "coming on cam" type thing. I rather miss it.
 

·
Registered
Joined
·
249 Posts
I'd be amazed at AHM getting this wrong. One of the best specialists in the country. Just take it back and Adie will be more than happy to look at it.
 

·
Registered
Joined
·
263 Posts
I used to have a shove at 3000rpm in my old 2.0ltr 156 and another around 6500rpm until beltsxand variator were changed a few years back.
Mine turned out to be a duff maf

Sent from my SM-G920F using Tapatalk
 

·
Registered
Joined
·
692 Posts
Do you have the standard induction system fitted or is it an aftermarket setup? This sometimes affects the torque curve
 

·
Registered
Joined
·
263 Posts
My car was all standard.
Original box oe filter and snorkel all present.
Went pretty quick for a little 2.0ltr.

Sent from my SM-G920F using Tapatalk
 

·
Registered
Joined
·
109 Posts
Discussion Starter · #19 ·
My car is standard except for a Longlife ss exhaust. Lambda was replaced last year, no idea when the MAF was last done.

One other thing, it does seem to make less noise when starting from cold. It is actually running very well, but that's not unusual as it's been bloody lovely ever since I brought it 3 years ago. Oops that's done it!
 

·
Registered
2012 MiTo 1.4TBi, Past 2010 Giulietta 2.0 170 Veloce, Past GTV 2.0 TS Lusso
Joined
·
111 Posts
Had the cambelt replaced, didn't need to do the variator.

However now I am not getting the extra shove at 3k that I did before.

Why could this be?
Moving the MAF or even moving the wiring can cause a change in power characteristics, due to the fragile nature of the MAF and wiring.
They are notoriously difficult to test, sometimes swapping one will tell you if it is duff.
Sometimes you can get away with disconnecting it and see if there is a difference.
If it runs like a dog connected and better disconnected it is simple, but the difference is not always easy to determine.
 
1 - 20 of 20 Posts
Top