BOX1

Hard starting Big Red in cold weather

J

jimbob

New Member
Lifetime Member
Dec 7, 2013
3
10
3
North Las Vegas
Ownership

  1. 1000-5

  2. Big Red
Has anyone else had the problem starting in cold weather? I use mobile one 15-50 oil. Turns over ok but will not fire.
 
H

Hondarider

New Member
Mar 21, 2014
23
11
3
Hi Jimbob,
I just bought a 2011 700 MUV this past spring and when it gets 30-40 degrees some mornings it won't start or fire. Wait 10 min. and then it might start as if nothing was wrong. Have you determined a solution?
 
H

Hondarider

New Member
Mar 21, 2014
23
11
3
The easy but expensive (about $900) route is to replace the PCM (Powertrain control module, AKA computer located in the battery box). At below 30 deg. F, found the PCM wasn't firing the injector even though the injector resistance was within the specified range (12 ohms). To repair without replacing the computer, we used a 12 V lamp (#194) to monitor the injector activity by placing it in parallel at the injector. Interestingly, because of the increased current the output of the PCM is now working reliably. The resistive component of the lamp may be a contributing factor to this solution.
 
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