Quote:
Originally Posted by BuffDad
ok, I'll check it out this weekend. any thoughts on how hard it is to remove the throttle body? I assume there's a gasket between the TB and the intake; suggestions where I can obtain a replacement gasket? And, if the IAC is bad, where might I find a new one?
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All you need to do to remove the TB is the following:
- remove the battery connections
- remove the air hat / intake
- remove all the electrical connectors that connect on the TB (map, IAC, TPS)
- remove the vac line going to the TB
- remove the throttle linkage cables or, you can simply remove the 3 bolts holding the linkage plate to the TB.
- remove the 4 fasteners that secure the TB to intake.
- lift and remove the TB off the intake
- cover with shop rag to prevent things from falling into the intake.
Installation is the the opposite as above. Torque is 18 ft lbs on the 4 TB fasteners.
Note: you may want to verify the torque requirement for the 95 just to be on the safe side. Some were only spec'd out to 8-10 ft lbs. 18 ft lbs is nearly twice that amount. Check the Haynes manual under Gas and Emissions section. It is listed on the very first page of that section. Do check the proper connector orientation for your year too.
-remove all the sensors and set aside. NOTE THE SIDE that faces up on THE TPS SENSOR BEFORE TAKING IT OFF. It usually is the one with the stamped number on the face.
-clean the TB using TB cleaner, Acetone, Mineral Spirits, Brake Cleaner etc.
DO NOT USE ACIDS to clean Al TBs. Solvents only for all Al TBs.
-use a brush to rid of all carbon deposits around IAC ports.
-clean the TB plates, bores etc.
-clean 100% until shiny- no dark residual carbon should be left.
Done cleaning. Now, time to get a new IAC and put it on.
1. Lightly grease the o-ring with white grease. Just light enough to create a shine. It should not be loaded with tons of grease. Just shiny looking.
2. Install it. On yours, I am not sure of which way the connector is supposed to face. There's an orientation for those things and, the connectors are supposed to face a certain direction. On a 96 for example, this connector is supposed to face the passenger side. That is the OEM spec. Check Haynes manual.
3. Just tighten by hand using a torx screwdriver. Do not over tighten as you will strip out the casting and it will never work. Just snug will do. When the fastener does not turn any more- stop.
4. Reattach your MAP sensor- this is the largest sensor- to the front.
5. Reattach your TPS to the shaft by engaging the two contact points on the flat of the shaft first and then finally rotating it into position so that the mounting holes are lined up. NOTE THAT THE CORRECT SIDE FACES UP.
6. Get a new gasket at Napa, Auto Zone, Car Quest, etc. Most have them or can find one.
7. Get some Gasgacinch sealer while your at it. Place some GC around the bottom of the TB and on one side of the gasket. Note which side you put it on.
8. Let dry for ten min.
9. Once dry, take the gasket and place it onto the bottom of the TB. SImply align it to the TB bores and AIC airway.
10. Using an exacto, trim as needed so that all edges are FLUSH with the bore and IAC opening.
11. Clean out any debris from the gasket trimming process using a can of compressed air.
12. You are now ready to install the TB back on the engine. Installation is the reverse of what was explained above.
It sounds like a lot because you haven't done it. It is very simple. Any questions feel free to ask.
Chris
