Contour Enthusiasts Group Archives
Posted By: Nezerconezer SVT High RPM Full Throttle Problem - 08/23/06 06:19 AM
A nice little problem decided to come up today. Was accelerating up an on ramp at full tilt in 2nd gear. When I got over 4500 RPM the power flow became very uneven. Just drove in it again and is still having the same problem. Its not dramatic but it is pretty substantial, you can definitly feel it. Any ideas?
Posted By: Big Jim_dup1 Re: SVT High RPM Full Throttle Problem - 08/23/06 10:58 AM
Three things come to mind.

IMRC acting up so that the secondaries are fluttering.

Fuel supply restricted so that it's running lean at high RPM and heavy load. Plugged filter or weak pump.

Ignition miss from weak ignition from worn plugs, leaking plug wires, or weak coil.
Posted By: Nezerconezer Re: SVT High RPM Full Throttle Problem - 08/23/06 11:36 AM
How would i go checking these things?

Heres some more info, just incase it would help.

Recently put a new sound system in it, 700 watt amp.

52k miles

Premium fuel only.

Just rained yesterday.

Have a AES SRS intake on it.
Posted By: Tony2005 Re: SVT High RPM Full Throttle Problem - 08/23/06 01:44 PM
Originally posted by Nezerconezer:
How would i go checking these things?

...




1) Disconnect the sound system and see if it helps.

2) Change fuel filter.
Lots of How tos in Duratec Maintenance FAQ

3) Revved the car above 4K and see if the IMRC lever moves.
IMRC test

4) Have fuel pressure tested at a shop.

5) Check/change ignition system (coil, wires, spark plugs).
Coil from Autozone. Spark Plug and wires from Duratec Maintenance FAQ
Posted By: Big Jim_dup1 Re: SVT High RPM Full Throttle Problem - 08/24/06 03:43 AM
Important new information. The new intake.

Combined with hot weather that may be your problem. If you are feeding the engine hot under hood air that could explain your problem. You need to have the intake inlet where it gets cold air or you need to create a hot air dam.

You may find more with a search on such topics as "hot air dam", "hot weather power loss", " or "cold air intake". One of the veterans here made his hot air dam from an old plastic trash can lid.
Posted By: Big Jim_dup1 Re: SVT High RPM Full Throttle Problem - 08/26/06 05:32 PM
Did you figure anything out yet?
© CEG Archives