2007 Chevrolet Colorado Stalls While Braking.

Tiny
AGAXIOLA
  • MEMBER
  • 2007 CHEVROLET COLORADO
  • 3.7L
  • 5 CYL
  • 2WD
  • AUTOMATIC
  • 124,000 MILES
Okay guys, I really need your help. I have checked my truck and changed the sensors that came up as faulty with the obd scanner. I have changed the Mass air flow sensor and the secondary air intake valve, I still have the same problems. The truck stalls while braking specially when cold and it also does not turn on at times and I have checked other forums and I have been told that the reason the truck wont start is because of the pass lock sensor in the ignition. How can I fix these problems I learned that the stalling might be the IAC needs cleaning but I have not found out how to clean it. Any suggestions?
Tuesday, November 11th, 2014 AT 7:27 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,643 POSTS
Okay, question. Does it stall while braking or does it not start? An idle issue could be the result of an IAC or even a vacuum leak, but you should be able to get it started. Let me know what is going on for you.
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Tuesday, November 11th, 2014 AT 8:05 PM
Tiny
AGAXIOLA
  • MEMBER
  • 2 POSTS
I have both problems but they are not related I believe. At any time during the day mainly in the mornings the anti theft light blinks and the truck will not start and I have to wait 10 minutes. The stalling happens while braking or while going down hills and braking. If I don't look at the RPM's and accelerate when they get too low I stall.
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Tuesday, November 11th, 2014 AT 9:23 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,643 POSTS
Yes, there are two different problems. The anti theft needs addressed by a dealer that has the proper test equipment to check codes. The stalling is most likely the IAC or a vacuum leak.
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Thursday, November 13th, 2014 AT 5:21 AM

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