Hi, Guest
2001, SPI, auto with AC.
Never had that before, although I do get the usual lack-of-go from running AC in the summer. I tend to deflect it by running it as little as humanly possible.
Upgrade your wires if they're the original wires with the 8mm replacements right from the dealer. They're a huge help with cleaning up the idle and adding a bit of responsiveness. Also, consider replacing your plugs even if it isn't around 160,000 KMs. I'm coming up on 100K and considering replacing mine.
Ford, like every other OEM other there, considers "does it run?" over pure performance.
Also, if you still have some nagging idle issues, there's a couple of things that can be checked still:
Is the IMRC actually closed below 3200RPMs? Test this by watching the driver's side of the block and revving the engine manually at the throttle body. As you ascend beyond 3200RPMs, the IMRC motor should engage and open the butterflies to the secondary intake tracts. If you watch below and behind the distro cap for the sparkplug wires, you should see the IMRC arm swing to open the butterflies.
If you have a tach, have a friend watch the tach. If not, hold down the trip odo reset with the car off, start the car, hold it till the display flashes and the gauge needles do a sweep, then tap the trip odo reset button 9-10 times for the digital tach.
The thing is, the SPI will idle like s*** and run poorly below 2000 RPMs (potentially on the last part) if the IMRC's secondary intake runners are already open.
Also, you can disconnect the neg. battery cable and leave it off for 15 minutes or so to force a reset for the fuel/air map in the ECU. Afterwards, reconnect and drive around to let the engine relearn based on the air going past the MAF. A combination of everyday stuff and "drive it like you stole it" will calibrate it nicely in an hour or two.
Then, re-evaluate from there.
IMRC - Intake Manifold Runner Control. A two-stage intake setup on the SPI, a design characteristic actually shared with the SVT 2.0L engine. Below 3200RPMs the secondary runners are closed, boosting torque and around town driveability. Above 3200RPMs, as air needs increase, the butterflies open and the extra intake capacity of the manifold is used to funnel more air into the engine. It makes quite the difference on the highway and in situations when you've gotta go!
Never had that before, although I do get the usual lack-of-go from running AC in the summer. I tend to deflect it by running it as little as humanly possible.
Upgrade your wires if they're the original wires with the 8mm replacements right from the dealer. They're a huge help with cleaning up the idle and adding a bit of responsiveness. Also, consider replacing your plugs even if it isn't around 160,000 KMs. I'm coming up on 100K and considering replacing mine.
Ford, like every other OEM other there, considers "does it run?" over pure performance.
Also, if you still have some nagging idle issues, there's a couple of things that can be checked still:
Is the IMRC actually closed below 3200RPMs? Test this by watching the driver's side of the block and revving the engine manually at the throttle body. As you ascend beyond 3200RPMs, the IMRC motor should engage and open the butterflies to the secondary intake tracts. If you watch below and behind the distro cap for the sparkplug wires, you should see the IMRC arm swing to open the butterflies.
If you have a tach, have a friend watch the tach. If not, hold down the trip odo reset with the car off, start the car, hold it till the display flashes and the gauge needles do a sweep, then tap the trip odo reset button 9-10 times for the digital tach.
The thing is, the SPI will idle like s*** and run poorly below 2000 RPMs (potentially on the last part) if the IMRC's secondary intake runners are already open.
Also, you can disconnect the neg. battery cable and leave it off for 15 minutes or so to force a reset for the fuel/air map in the ECU. Afterwards, reconnect and drive around to let the engine relearn based on the air going past the MAF. A combination of everyday stuff and "drive it like you stole it" will calibrate it nicely in an hour or two.
Then, re-evaluate from there.
IMRC - Intake Manifold Runner Control. A two-stage intake setup on the SPI, a design characteristic actually shared with the SVT 2.0L engine. Below 3200RPMs the secondary runners are closed, boosting torque and around town driveability. Above 3200RPMs, as air needs increase, the butterflies open and the extra intake capacity of the manifold is used to funnel more air into the engine. It makes quite the difference on the highway and in situations when you've gotta go!
Daily driver 1: 2007 Jeep Wrangler Unlimited Sport "S"
33" BFG Mud-Terrain KM2s, lots of Rough Country gear - bumper, 2.5" lift, swaybar disconnects, Superwinch 10,000lb winch, Detroit Locker in rear D44 axle, custom exhaust, K+N filtercharger, Superchips-tuned.
Daily driver 2: 2006 Subaru Legacy GT
COBB Stage 1+ package - AccessPort tuner, COBB intake and airbox. Stage 2 coming shortly - COBB 3" AT stainless DP and race cat, custom 3" Magnaflow-based exhaust and Stage 2 COBB tune.
33" BFG Mud-Terrain KM2s, lots of Rough Country gear - bumper, 2.5" lift, swaybar disconnects, Superwinch 10,000lb winch, Detroit Locker in rear D44 axle, custom exhaust, K+N filtercharger, Superchips-tuned.
Daily driver 2: 2006 Subaru Legacy GT
COBB Stage 1+ package - AccessPort tuner, COBB intake and airbox. Stage 2 coming shortly - COBB 3" AT stainless DP and race cat, custom 3" Magnaflow-based exhaust and Stage 2 COBB tune.