Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Stupid car

Featured Replies

Im going to try this again. Changed the plugs to ngks and the wires to whatever crappy borg warner my brother bought

 

im going to buy either the ngk wires or the magnacore which one is best for the engine.

 

I sill have terrible hesitation on cold startup. Cleaned the maf and still running on the seafoam tank.

 

IM trying to save up some bucks for some tires mcbrat said he would sell me but i dont want to dump more into this motor if its not going to help

 

ben

Either choice will be good for the wires. Personal prefference there. Might also look into changing the fuel and air filters as well...

 

Another thing that could probably stand to be cleaned is your iac on the front of the intake manifold.

  • Author

[===i guess the only prefrence i have is price. where is that located it will get a new fuel filter in a month or so air filter is new. how do you clean whatever your talking about

 

Ben:banana:

The goldish looking cylender on the driver's side strut tower is the fuel filter.

 

For the iac(idle air control) valve, remove it, two or three bolts, and shoot it with carb/air intake cleaner. Let it dry out and reinstall.

LoL, sorry...

 

Its on the very front of the intake manifold.

 

Disregard the writing on the pic, it is from General Disorder's spfi conversion write-up.

SPFI_manifold_overall.jpg

Sounds like a problem with the CTS. Either its bunk, or the wiring to it is bunk. Its the sensor on the T-Stat housing with two wires going into a green plug. Drop it in water, and bring it to boiliing, making sure the resistance changes with the temperature.

Four screws. And probably have to take off your p/s pump. But Mike made a very good point, check out the coolant temp sensor before tinkering with the iac

  • Author

help me out here im pretty good with cars but i dont have a degree in them. What does cts half to do with the engine. what does a coolent temprature sensor half to doo with lack of power when you jump in a car start it and want to go

 

Ben:grin:

help me out here im pretty good with cars but i dont have a degree in them. What does cts half to do with the engine. what does a coolent temprature sensor half to doo with lack of power when you jump in a car start it and want to go

 

Ben:grin:

When the engine is cold, the computer needs to see it. You have to run a slightly richer mixture of gasoline on a cold engine as gasoline will condensate on the intake manifold. Pretty much the same purpose as a choke on a carb.

 

My engine had a terrible hesitation when cold. Replaced the CTS with a junkyard one, and it ran fine.

 

Please note, that this sensor is different from the one for the temp gauge in your car.

It tells the computer what temp your coolant is at. Which in turn the ecu corrects fuel enrichment to suit the conditons.

  • Author
It tells the computer what temp your coolant is at. Which in turn the ecu corrects fuel enrichment to suit the conditons.

 

can you get one of these new or is it easier to just get a junkyard one

 

ben

you'd be hard pressed to find one at a junk yard around here....

 

there's only been 2 ea82's come through during the last year or so at Wrench 'n Go. might find some at the other places.... but doubtful.

 

Carney's in ames may have something....

can you get one of these new or is it easier to just get a junkyard one

 

ben

Test your current one before trying to find a replacement. May not be bad. (Mine only failed after 230K miles)

 

To test it, you'll need water, ice, a stove (or hot plate), a thermometer and an ohmmeter. Put it in water of varying temperatures. Measure the resistance across the two terminals. The values should be:

 

14 deg F : 7 - 11.5 kOhm

68 deg F : 2 - 3 kOhm

122 deg F : 0.7 - 1 kOhm

 

If it checks out, its good. FYI: Brand new replacements can cost upwards $80. If you find yours is bunk, I'd post a wanted in the classifieds of the board.

  • Author

humm i think ill replace the other parts first and if it still doesnt work ill go from there but i dont have a therometer or an ohmmeter. Ill clean the one part if i can get to it but ill go from there.

I dont know about the EA82s but the ER27s CTS seldom goes bad..the wireing does and there is a simple fix for it..hardwire the wires directly to the sensor..the connectors go bad and the wires get corroded .. I replaces about 8 inches of wire and soldered them directly to the CTS..then used heat shrink to hold it all together

 

But my question is...did you have this problem before you cleaned the motor or is it only since you cleaned it?

 

My Loyale has always had a hesitation when cold..never got better never got worse..i just alwasy know to warm it up for a minute or 2

  • Author

its always been like this from what i understand it was like that with my brother when he bought it

 

ben

If it checks out, its good. FYI: Brand new replacements can cost upwards $80. If you find yours is bunk, I'd post a wanted in the classifieds of the board.

 

FYI. The SPFI sensor is expensive($80-90). The MPFI one is way cheaper

(17.99 at autozone) Both output in the same range of resistance. And both share the same thread size. I believe that by simply fashioning wiring adapter you could use the MPFI cheap sensor on the SPFI engine. I haven't actually test fitted one. The MPFI sensor has a longer probe, which might interfere with the thermostat, but I doubt it.

 

 

It's really not good for you're car to run with a bad CTS. You really should test it. You can test it on the car by measuring resistance when it's cold(before you start it), then watching the resistance as the engine temp rises. Use the figures MikeShoup provided. If you don't have a multimeter, go get one. They can be gotten for about 20 bucks or less.

Harbor Freight routinely sells a cheap DMM for about $3.00 if there's not a Harbor Freight near you I'd be happy to snap one up at their next sale and mail it to ya!

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.