2012 Malibu Fuel/Start Issue - ECM?

10

Asked by Mar 08, 2017 at 08:54 PM about the 2012 Chevrolet Malibu LS

Question type: Maintenance & Repair

I have a 2012 Chevy Malibu. In June of 2016, the
car would occasionally struggle to idle, but would
always start and run fine otherwise. In August, the
vehicle started having issues cranking. It threw a
code "fuel pump circuit failure". Mechanic friend
told us to change the fuel pump, so we did. Ram
fine for a few weeks, and then wouldn't start again.
Checked the relay and it was HOT. Changed relay
and seemed to solve the problem. 2 months later,
and the vehicle started having problems cranking
again. Discovered that a slight tap on the fuse box
(located in the trunk) would solve the problem and
the car would start fine. A few weeks ago, the
vehicle started dying out while driving, but would
pick back up after a couple of seconds. Last week,
the fuse box trick would not work, and it took
nearly 30 minutes to get it started. Any
suggestions before I sell my left arm to have the
dealer replace the ECM?

6 Answers

3,885

I think you have wires grounding out that shouldn't above the fuel tank , did you do the fuel pump or did the mechanic ? The cars not that old to have corrosion at that fuse box but maybe you should take a close look.

10

@beatupchevy We changed the fuel pump ourselves. Would it still explain the problems happening before the pump was changed? All connections in the fuse box look clean.

3,885

I would think a bad ECM would show up some how with a code scan ,scan again even if the light isn't on , anti theft can give similar problems but the way to fix it is to find out what the problem is first , the original fuel pump was probably O.K. the code said fuel pump circuit , you may need a technician ,

I've been experiencing the same problems with 2012 Malibu. Swithched the relay, bang on the fuse box but now it's getting worse. Did you ever figure out the problem?

Any resolution. I too have this issue (2012 Malibu 101700 miles)

And now I have the intermintent dying problem. Codes p0230, p0615, p0645, and b1325. Do these codes have a particular common point?

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