I got a disappointing result at the SE meet at Surrey Rolling Road last week. Only 124bhp at the rear wheels. I've had the car 1yr bought from importer with little or no history. It's a 1995 2+2 NA Auto (probably all the wrong combinations for performance). I was told that the cam belt was changed at around 90,000 kms and there is an aluminium plate in the engine bay that says so in Japanese (I think that's what it says!). Its now done 80,000miles.

 

However, because I've not anything to compare it to, the fastest thing I've driven to date was the old 2.8i Supra, I'm not aware of any power loss. Any sluggishness I've put down to the auto box. It is pretty slow off the mark but if you kick down and it finds a lower gear it seems to take off ok. Mid range acceleration in kick down seems ok too, although the other week I was left for dead by a new TVR Griffith. The engine note is fine and smooth, there don't seem to be any added noises, there's no smoke from the back and no oil on my driveway.

 

The boys at Surrey RR were mumbling something about running rich and air flow meters etc so I've booked it in at MJPautos nr Chelmsford this weekend to be sorted out.

 

Any of you guys anticipate what they'll find?

Was gonna suggest exactly the same Paul! Also, check the base timing. Really need a consult for this though so you can see what timing the ECU thinks it is running.

 

 

Ditto Andy was just gonna suggest timing.

 

Ivan

I've never used the dyno at Thurston so I don't know how 'accurate' it is. I'm sure Mike would have an opinion on that. However, you certainly have a significant dip in the power. Did Mike check the base timing with a timing light and is the CAS in a 'sensible place' ie with the screw in the middle of the slot ? Is the cam timing correct and are the variable cam timing soleniods working ?

I've never used the dyno at Thurston so I don't know how 'accurate' it is. I'm sure Mike would have an opinion on that. However, you certainly have a significant dip in the power. Did Mike check the base timing with a timing light and is the CAS in a 'sensible place' ie with the screw in the middle of the slot ? Is the cam timing correct and are the variable cam timing soleniods working ?

 

I'm sure Mike would have checked all that. He knows far more about this than I do. He's had the car several times running tests etc and came up with the electronic linkage between speedo and gearbox being faulty. ie the gearbox didnt know what gear to select because it didnt know how fast the car was going, and this was an intermittent fault. The problem lay with the speedo converter that was put on when imported and the problem has largely gone away having replaced this item.

Mike reassured me that the timing was ok (see post 11 of this thread) and at this initial check CAS was checked too. I know Mike occasionally dips into this forum so if he's reading this and has any other thoughts i'm sure he'd give me a ring.

Andy