fixed idle now it shudders - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

cjhstang · 09-08-2009, 18:14

Well, fixed the idle problem... all i did was clean the IAC and the MAF sensor and now it idles fine. Now we've noticed that it likes to shutter lightly when your cruising. Not when your accelerating, just cruising at a constant speed or slowly declining in speed or slowly increasing...
only code was camshaft position sensor bank 1 came up. nothing else.
any idea?
Would this code cause this result?
thanks

**Bert** · 09-08-2009, 18:21

It's very possible that will cause it. The PCM watches all the sensors and adjusts the mixture and timing from the readings.

cjhstang · 09-08-2009, 19:37

would you know where that sensor is located?
...I'm assuming its a faulty sensor (or sensor related) rather than an issue with the camshaft.

these use timing CHAINS right? (V6)

thanks for your help...again

**Bert** · 09-08-2009, 20:16

What year and engine?

cjhstang · 09-08-2009, 20:25

'99 v6

**Bert** · 09-08-2009, 20:29

I found your previous post. These plugs go to the sensors. C643 and C1893.

cjhstang · 09-08-2009, 20:35

those look fun to get to! you wouldn't happen to know which one is bank one would ya?

**Bert** · 09-08-2009, 21:01

Bank 1 should be the side closest to the firewall. By the picture, it's hard to say. Look at the connectors and see which one goes toward that side.

steven.smith22 · 01-25-2010, 17:21

Hi,
The problem with cleaning the Idle air control motor is you can do more harm than good. I have taken one apart and it has two diaphragms. One seals and the other works with the solinoid. The cleaning solution will not fix the leaks in the diaphrams it will cause them to swell! The only solution to my daughters cougar was to replace it. The only one to buy is from Rock Auto or Silverstate Ford. The part numbers from Rock auto are CX-1897 or Ford part number XS2Z-9F15-BC. The aftermarket ones will not work! Only use a genuine Motorcraft part for this particular part! The other two problems are the small retainers on the IMRC which are on a linkage under the throtle body which break. and the linkage falls off. The cost about $10.00 and are easily replaced. The other notorious problem is the intake gaskets, but this may be of some help. The car -throttle body cleaner sprayed down on the intake runners joints wher they join the lower intake may show an intake leak.. Most occur at the side by the pasenger motor mount. Losen one of the top intake bolts and oil it and re-torque it one by one. I have looked at the gasket and the inner core is a silicone rubber seal. Spraying the carb cleaner will expand it and re torquing the bolts will seal the leak. When spraying the area in question the idle will fall lower. You will notice if this procedure works because spraying liquid where there was a leak will have no effect after leak is sealed.