Intake Manifold choke diaphram for 98 ford windstar

This is common for this vehicle. You need to have the intake manifold gasket replaced.

Intake torque specs ' FordForumsOnline.com

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May 7, 2010 - 2 posts - ‎2 authors
ISO torque specs for the intake & plenum for a 98 Windstar...3.8 with the ... Our community is here to help you with any questions you have related to your Ford. ... Lower Intake Manifold to Cylinder Head Bolt 8-12 - (71-106).

Torque Specifications - AutoZone

www.autozone.com/.../Ford-Windstar.../Specifications/Torque-...

AutoZoneAutoZone Repair Guide for your 2004 Ford Truck Ranger 2WD 2.3L MFI DOHC 4cyl Engine Mechanical Specifications Torque Specifications. ... Ford Windstar 1999-2003 ... Bolts, Main Bearing Bolts, Rod Brearing Bolts, Crankshaft Damper Bolts, Flywheel Bolts, Manifold. Intake, Exhaust ... Vehicle: 2008 Ford F150, 98 Civic.

copy and paste
https://www.justanswer.com/ford/2w39p-need-upper-lower-intake-manifold-bolt-torque-specs.html

https://www.justanswer.com/ford/1vuu6-need-lower-intake-torque-specs-2001-ford-windstar.html

Hi Pamela,here's a couple of vacuum diagrams to your 98 Ford Windstar,click on link to see,if this doesn't help,let me know.http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0900c152800ae188

Intake Manifold to Cylinder Head Bolt

Tighten in two steps:

• 20-30 Nm (15-22 Lb-Ft)
• 26-32 Nm (20-23 Lb-Ft)

(2) (2) -

With all these questions,how do you know you
need to clean anything? You shouldn't have to
If you do you have other issues

Codes p1537 and p 1538 are codes for a faulty IMRC valve. They are located on the lower intake manifold.

Intake Manifold Runner Control (IMRC), Vacuum Control

1. Remove E-clip retaining vacuum control linkage to lever/shaft assembly.
   

1. Remove adjustment screw from the vacuum control (9S514) and bracket.
   

1. Remove two bolts retaining vacuum control and bracket to IMRC housing assembly.
   

1. Disconnect linkage from the lever/shaft assembly and remove vacuum control .
   

1. To install vacuum control and bracket assembly, reverse Removal procedure. Tighten retaining bolts to 8-11 Nm (71-97 lb-in). Adjust vacuum control as described.
   
   
   Intake Manifold Runner Control (IMRC)
   
   
   
   

As for the misfire codes, Check out the upper and lower intake gaskets. Since you have to take the upper intake off for the imrc valves its just a few more bolts to remove the lower intake. The intake gaskets are rubber seals. When the engine is cold the seals shrink and causes a misfire. when the engine warms up the seals expand and the misfire goes away.

This code means the intake manifold runner is stuck open either from a faulty actuator on the intake or the valves plates are gunked up unable to move,

These are all related:
P1537 and P1538 are BOTH:
Intake Manifold Runner Control Stuck Open
P0171 is Lean Bank #1
P0174 is Lean Bank #2.
On the front of the Intake Manifold there are Plastic Clips. The Clips are currently broken and need to be replaced. Because these are broke the Computer is registering too much Air or not enough Fuel = Lean.
You should be able to purchase these at any auto parts store (call ahead for availablility).
After you replace these, all the Codes should disappear.
Let me know if this helped, or if you have addtional information or questions. Feel free to contact me at FixYa.com!