Help with engine Diagnosis!!!!!
Thread Starter
|
Cruiser
Joined: Dec 2014
Posts: 134
Likes: 2
From: NC
low and behold......it's not the slip ons causing the problem, go figure.
I did get two more codes in the system:
P0374 crank position sensor
P0505 unstable Idle
I talked to someone today and they mentioned a BCM on the left side of the bike that is controlling over half the electrical on the bike on the 2014's. Anyone had a problem with one of those or heard of someone who has?
I did get two more codes in the system:
P0374 crank position sensor
P0505 unstable Idle
I talked to someone today and they mentioned a BCM on the left side of the bike that is controlling over half the electrical on the bike on the 2014's. Anyone had a problem with one of those or heard of someone who has?
Road Master
Joined: May 2008
Posts: 1,196
Likes: 14
From: connecticut
low and behold......it's not the slip ons causing the problem, go figure.
I did get two more codes in the system:
P0374 crank position sensor
P0505 unstable Idle
I talked to someone today and they mentioned a BCM on the left side of the bike that is controlling over half the electrical on the bike on the 2014's. Anyone had a problem with one of those or heard of someone who has?
I did get two more codes in the system:
P0374 crank position sensor
P0505 unstable Idle
I talked to someone today and they mentioned a BCM on the left side of the bike that is controlling over half the electrical on the bike on the 2014's. Anyone had a problem with one of those or heard of someone who has?
Road Warrior
Joined: Dec 2010
Posts: 1,892
Likes: 3
From: New Hampshire
This is going to sound really stupid, but has anyone checked to make sure the battery connections are tight and that there is no corrosion interfering? That is just the sort of thing that can cause intermittent "electrical" issues. Probably not it, but always check the simple and cheap things first.
Thread Starter
|
Cruiser
Joined: Dec 2014
Posts: 134
Likes: 2
From: NC
The dealer changed out the MAP sensor today and ran it on the dyno for 30 min before they let me know that they think it's fixed this time. They are going to run it some more on the dyno tomorrow before they test drive it on the road and then give it back.
I think the reason they aren't going after the crank sensor is because the ECM is looking for crank pulse at a certain interval and when the engine misses, the ECM is thinking the crank sensor is bad and not the engine running like ****. At least that is my .02, if any of you guys think I'm on the wrong base please voice your opinion.
At least the MAP sensor seems legitimate. Unmetered air in a fuel injected motor wreaks havoc on drivability.
I think the reason they aren't going after the crank sensor is because the ECM is looking for crank pulse at a certain interval and when the engine misses, the ECM is thinking the crank sensor is bad and not the engine running like ****. At least that is my .02, if any of you guys think I'm on the wrong base please voice your opinion.
At least the MAP sensor seems legitimate. Unmetered air in a fuel injected motor wreaks havoc on drivability.
Road Master
Joined: May 2008
Posts: 1,196
Likes: 14
From: connecticut
The dealer changed out the MAP sensor today and ran it on the dyno for 30 min before they let me know that they think it's fixed this time. They are going to run it some more on the dyno tomorrow before they test drive it on the road and then give it back.
I think the reason they aren't going after the crank sensor is because the ECM is looking for crank pulse at a certain interval and when the engine misses, the ECM is thinking the crank sensor is bad and not the engine running like ****. At least that is my .02, if any of you guys think I'm on the wrong base please voice your opinion.
At least the MAP sensor seems legitimate. Unmetered air in a fuel injected motor wreaks havoc on drivability.
I think the reason they aren't going after the crank sensor is because the ECM is looking for crank pulse at a certain interval and when the engine misses, the ECM is thinking the crank sensor is bad and not the engine running like ****. At least that is my .02, if any of you guys think I'm on the wrong base please voice your opinion.
At least the MAP sensor seems legitimate. Unmetered air in a fuel injected motor wreaks havoc on drivability.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread Starter
|
Cruiser
Joined: Dec 2014
Posts: 134
Likes: 2
From: NC
A map sensor senses engine load not engine air flow by using a reading of manifold pressure. When the key is turned on the sensor reads BP barometric pressure and uses this as a baseline. When idling the engine has its highest amount of vacuum and 0 at wot. The ecm uses this reading along with tps and rpm to calculate fuel pulse width. Map sensors typically don't fail in a intermittent way. It looks like they are just throwing parts at it and need to duplicate the concern to get it fixed. Be patient these type of problems can be very difficult to diagnose. My money is on a wiring issue.
Thread
Thread Starter
Forum
Replies
Last Post