Belt Falling Off on Cold Start! HELP! - EvoXForums.com - Mitsubishi Lancer Evolution X Forums
EvoXForums.com - Mitsubishi Lancer Evolution X Forums
Go Back   EvoXForums.com - Mitsubishi Lancer Evolution X Forums > Evo X > Evo X Engine (4B11T)
Home Register Forum Store Members List Calendar Auto Loans vBGarage Photo Gallery Search Today's Posts Mark Forums Read Auto EscrowInsurance

Evo X Engine (4B11T) Discussion for engine systems that are unique to the Evo X. IF THE TOPIC IS COMMON WITH OTHER LANCERS, PLEASE POST IT IN: '08+ Lancer Common.

Reply
 
Thread Tools Display Modes
Old 02-11-2019, 02:08 AM   #1
adi105
Member
 
Join Date: Jul 2017
iTrader: (0)
Location: Portland, OR
Posts: 40
Unhappy Belt Falling Off on Cold Start! HELP!

Hey guys,
I am at the end of my wits with this one. My belt keeps falling off. It only happens at cold starts, and not all cold starts. Only certain ones, when the stars align, it will slip off. I once caught it because I was wary that it might fall off, so I had a second person look at the belt while I turned the engine (without starting it) and the belt wanders off the pulley pretty quickly. Within 6-7 turns, the belt falls off. When it happens upon startup, the belt falls off within the first .5 seconds of starting. I have replaced my pullies with hyundai metal pullies. I have replaced my tensioner assembly. The belt still falls off. I have a gates belt and a gates water pump, the rest of the system is completely OEM. Here's one interesting detail:
The belt issue started happening when I replaced the water pump. I replaced it with the gates unit 42144 purchased from MAP. The pump came with all three parts; the pump, the pulley, and the part that connects the pump to the block. I installed it as it was but I had the above issues with the belt start happening. So I removed it, I took some measurements, and I ensured that the Gates PUMP itself was the same dimensions as the OEM one. I installed the Gates PUMP on the OEM pulley and OEM piece that connects to the block. The belt still falls off.

I'd say this issue happens once every 3-4 days and it's super annoying. Any thoughts as to why it could happen?
__________________
2013 Evo X GSR

MODS:
Built 2.0 Shortblock, Wiseco 9.3:1 Pistons, Built by MAPerformance
GSC S2 Cams w/ Beehive Springs
ETS 3" Intake | ETS 3" IC Piping | Turbosmart 3-Port BOV (Red Spring) | GS 3-Port EBCS | AEM 340 FP | ID1300 Injectors | Ported MHI 18k Turbo | WTF Flex Fuel Kit | Muse 4" Intercooler | Muse O2 Dump 3" Downpipe | ETS 3" Test Pipe | Magnaflow Muffler

"Live life one gear at a time."
adi105 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 02-11-2019, 09:55 PM   #2
CanEvo2012
Forum Addict
 
CanEvo2012's Avatar
 
Join Date: Sep 2012
iTrader: (100)
Location: Vancouver, BC
Posts: 6,346
I would start with checking for the alignment of all the pulleys.
__________________
Mods:
GS 3-port | Cone Filter | AMS Hi-Flow Cat | T1R 76 Sparrow Catback | DEPO UICP | Synapse DV

eTune by Chet Rickerman, the best mod really.

2012 PB GSR - 340 AWHP/338 TQ on a good day.
CanEvo2012 is offline   Reply With Quote Quick reply to this message
Old 02-12-2019, 05:33 PM   #3
adi105
Member
 
Join Date: Jul 2017
iTrader: (0)
Location: Portland, OR
Posts: 40
You mean use some kind of level to check if any pulley is sticking out or too far in? Can't really fit much between the pulleys, maybe some sort of string? But, if there was a difference in pulley alignment, wouldn't this throw my belt off all the time, or when I'm at high revs? I can do pulls with no issue and the belt doesn't fall off. Only during cold starts.
__________________
2013 Evo X GSR

MODS:
Built 2.0 Shortblock, Wiseco 9.3:1 Pistons, Built by MAPerformance
GSC S2 Cams w/ Beehive Springs
ETS 3" Intake | ETS 3" IC Piping | Turbosmart 3-Port BOV (Red Spring) | GS 3-Port EBCS | AEM 340 FP | ID1300 Injectors | Ported MHI 18k Turbo | WTF Flex Fuel Kit | Muse 4" Intercooler | Muse O2 Dump 3" Downpipe | ETS 3" Test Pipe | Magnaflow Muffler

"Live life one gear at a time."
adi105 is offline   Reply With Quote Quick reply to this message
 
Old 09-09-2019, 01:58 PM   #4
dalastcwood
n00b
 
dalastcwood's Avatar
 
Join Date: Mar 2019
iTrader: (0)
Location: Memphis, TN
Posts: 11
Any updates on this? I'm having an issue with my belt riding off center on my tensioner idler pulley. I thought it may have been the pulley itself, replaced it and it is still off center. So I'm also looking for a way to ensure all the pulleys are lined up correctly.
dalastcwood is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Tags
serpentine belt, water pump

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the EvoXForums.com - Mitsubishi Lancer Evolution X Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Security Question
While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State what the 2x4 is made of.
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
OEM remote start key fob davidalindsey Evo X General 0 01-27-2019 04:16 AM
Faraday Future employees start GoFundMe after layoffs testdummy Automotive News, Articles & Pics 0 11-07-2018 07:20 PM
Car won’t start (no fuel) White_Rabbit Evo X General 1 11-05-2018 10:27 PM


All times are GMT. The time now is 04:31 PM.



Powered by vBulletin® Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.