capri280

iTrader: (1)

New built engine Gp a gasket,darkk greens.formula power leads.new coil,t4 turbo,ahmed bayjo chip stage 3 3 bar sensor and gpa coil(All new)

The red plug under neath the throttle head been diconnected and the car was idling rough on start up and giving slow throttle response when warm

Now the the plug connected to the red socket the car revs high on idle 2000-2400 and during driving the rev needle seems to be sticking

Tried adjusting the control screw to adjust the revs to 850 on idle to no avail


Any idea folks what my problem is and what is the best idle level in rpm

Advice please

jon@work

iTrader: (5)

Sounds like you've unplugged the throttle position sensor - not a good idea.

If you've got a L1 or L6 ECU, you need a PF01 TPS.
If you've got a L8 or P8 ECU, you need a PF09 TPS.

The easiest way to distinguish between the early Weber-Marelli management systems is by the colour of the fuel mixture trim screw in the box. On the front face of the management box, where the large wiring loom plug fits, is a recessed hole, with a small plastic screw visible.
• The early hatchback systems have a yellow screw (L1);
• Four door cars have a white screw (L6). Also, the Weber-Marelli Level 6 systems have a mounting flange on their front face to fix them into the car.
• The Level 8 & P8 systems do not have a mounting flange; the sides of the box are smooth. Only the very early P8 systems were fitted with a mixture trim screw, but as an extra check, the Level 8 systems have a red or green sticker on one of the covers, this will have WD48.08 printed on it. P8 systems have a white sticker, and this will read IAW48/P8

If you're running a L8 or P8 ECU on a 2wd loom, you need to switch over the outer wires at the TPS connector.

Of course, if you've been running your ECU/loom spec for a while, then all the above is irrelevant. Replace the TPS if you've got a spare with the same number, or investigate the wiring.

Idle speed - about 850 - 900rpm