EVO All Evo Model Discussion

'97 FLHTCI Fuel Injection problem?

Thread Tools
 
Search this Thread
 
Old May 12, 2012 | 01:48 PM
  #11  
larsfum's Avatar
larsfum
Stellar HDF Member
15 Year Member
Liked
Top Answer: 1
Joined: Jan 2009
Posts: 2,578
Likes: 463
From: On a Lake, not far from the Gulf
Default

Originally Posted by Denver Wiz
...

If the stepper motor isn't moving, how do ya test it to eliminate that as the problem, so I know if it is the engine temp. sensor?

Thanks again.
If the IAC moves when you first start the bike it is probably good. They tend to either work, or they don't. You can try spraying some carb cleaner on it ti get some of the crud out of it. While you are there take the backing plate off of the induction module, and spray some cleaner in the two small holes in the inside, top of the throttle body. These air bleeds will also get clogged over time.
 
Reply
Old May 14, 2012 | 08:48 AM
  #12  
Denver Wiz's Avatar
Denver Wiz
Thread Starter
|
3rd Gear
Joined: May 2012
Posts: 7
Likes: 0
From: Denver
Default

Originally Posted by im
here is the link for future reference regarding cam position sensor change-out..the easy way for me was to cut a tiny piece of allen wrench and place it into the head of bolt..Turn the little piece off allen with a small carb. wrench.
https://www.hdforums.com/forum/touri...mer-cover.html

Thanks!!!
 
Reply
Old May 14, 2012 | 08:50 AM
  #13  
Denver Wiz's Avatar
Denver Wiz
Thread Starter
|
3rd Gear
Joined: May 2012
Posts: 7
Likes: 0
From: Denver
Default

Originally Posted by larsfum
If the IAC moves when you first start the bike it is probably good. They tend to either work, or they don't. You can try spraying some carb cleaner on it ti get some of the crud out of it. While you are there take the backing plate off of the induction module, and spray some cleaner in the two small holes in the inside, top of the throttle body. These air bleeds will also get clogged over time.
So what I'm hearing is that if the engine temp sensor isn't working, the IAC won't move. Or, if the IAC is bad it won't move. So if the IAC doesn't move, how do I know if it's a bad IAC or a bad engine temp sensor?

Thanks!
 
Reply
Old May 14, 2012 | 03:36 PM
  #14  
EVOrider's Avatar
EVOrider
Stellar HDF Member
Joined: Feb 2007
Posts: 2,558
Likes: 280
From: Russellville, Arkansas
Default

The engine temp sensor can be checked....it is checked by resistance. I don't remember exactly the resistance specs. but it is in the shop manual somewhere. If someone else doesn't chime in shortly....I'll dig out the manual and hunt the specs. down.
 
Reply
Old May 14, 2012 | 08:15 PM
  #15  
1997bagger's Avatar
1997bagger
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Aug 2008
Posts: 5,070
Likes: 2,115
From: Ohio
Default

Evo member Larsfum posted this: good stuff

Just to verify that it is the ETS you can check it with a DVM. At 68* outside temp you should have 3747 ohms of resistance and 3.3v DC.
 
Reply
Old May 14, 2012 | 08:46 PM
  #16  
Moog Player's Avatar
Moog Player
Road Captain
Joined: Oct 2009
Posts: 701
Likes: 1
From: The Great Southwest Desert
Default

The iac will operate regardless the temp sensor at power up and shut down. You REALLY need the shop manual to work on the MMFI.
 
Reply
Old May 15, 2012 | 07:22 AM
  #17  
larsfum's Avatar
larsfum
Stellar HDF Member
15 Year Member
Liked
Top Answer: 1
Joined: Jan 2009
Posts: 2,578
Likes: 463
From: On a Lake, not far from the Gulf
Default

If the IAC doesn't move it is either bad, or gummed up. Spray some carb cleaner on it to try to get it working again.

Page 9-56 in the 1998 service manual gives a cart of resistance and voltage readings at different ambient temperatures for the ETS. When measuring resistance of the ETS you want to measure between the PK/Y wire and ground. The easiest way to do this is to slip a thin piece of wire down the ETS connector on the PK/Y wire and measure off of that. Just make sure it does not come in contact with anything metal.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
FLHPete
Touring Models
9
May 8, 2016 10:36 PM
bbeavers76
Softail Models
17
May 7, 2011 12:23 PM
toastman
Dyna Glide Models
9
Apr 25, 2011 08:50 AM
mkizer
Exhaust System Topics
2
Jun 29, 2009 11:00 PM
jcknapp
Softail Models
4
Feb 17, 2006 07:15 PM




All times are GMT -5. The time now is 06:29 PM.

story-0
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-1
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-2
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-3
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-4
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-5
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-6
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-7
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-8
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE
story-9
The Best and Worst Harley-Davidson Moves of 2025

Slideshow: A clear-eyed look at what actually worked for Harley this year, and what quietly undermined its progress.

By Verdad Gallardo | 2025-12-29 17:10:48


VIEW MORE