My 06 malibu ss got an engine swap, 3700 miles. My car runs great when it is running. Then when I turn it off, it will not turn on till the next day.

20

Asked by Aug 12, 2013 at 10:09 PM about the 2006 Chevrolet Malibu SS

Question type: Maintenance & Repair

06 Malibu SS Engine swap runs great with 3700m. Then after I turn it off, it will not turn
on till the next day. Before the next day, engine light turns on and data link scanner will
not read check engine light. When I pull the PCM Ignition Fuse from fuse box, check
engine light turns off. Again... the next day my car runs great!

5 Answers

71,775

When the ignition is in the "run" position but the engine is stopped the "check engine" light will be on. This is normal. Are you saying the PCM won't communicate with the scan tool or that there are no trouble codes? When you pull the PCM fuse and the "check engine" light goes out, again, normal. This is because by removing the fuse you're shutting down the PCM. When the engine refuses to start, check the basics. Are you getting fuel? Are you getting spark? Then go from there. HTH. -Jim

1 of 1 people found this helpful.
20

All the basics were checked, tested, and replaced. PCM will not communicate with scanner. Fuel pressure is good, starter and alternator good, fuses and relays good. I am thinking that my PCM is bad... I took it to a CHEVY Dealership and they told me that they needed more time to find the source... I asked if it could be the PCM. They are not sure. Where can I buy a trusted refurbished PCM? They had it for three weeks.. and nothing!

1 of 1 people found this helpful.
71,775

When you changed the engine did you "flash" the existing PCM using the vehicle identification number from the doner vehicle? This may be the problem. On an OBD II vehicle when a PCM is replaced it must be "flashed" (programmed) using your vehicle identification number for it to work. I'm just guessing here but it may be the same with an engine swap. Now judging from your symptoms and the fact that the 20 year old "techs" at the Chevy dealer can't figure it out I'm also thinking vapor lock. Vapor lock, which has pretty much been unheard of since the '60s, is when the fuel in the fuel line gets so hot it boils away before it reaches the engine. Have you checked the fuel lines for proper routing? Away from the hot exhaust manifolds? One other thought is if the battery wasn't disconnected first, before any work began, the PCM may have been fried by a hot wire touching metal during the engine swap. You can easily buy a replacement PCM at your local auto parts store but it must be "flashed" in order to work. Check with the person doing the "flashing" to see which vehicle identification number (yours or the doner vehicle) needs to be used. HTH. -Jim

20

I do not have the vin to the engine swapped motor. Can I still flash with MY VIN? Haven't checked fuel line in conjunction with manifold heat, but will do. Battery was disconnected when working on the swap, thats not to say that complacency didn't settle in after a long frustrating day of swap and accidental short happened. One more thing. Do I have to take my car to CERTIFIED, KNOWLEDGEABLE mechanic while they perform the programming (FLASH)? Also... I have heard of vapor lock.. But of all the forums out there, Your explanation of VAPOR LOCK is now a second nature term for me. THANK YOU!

1 of 1 people found this helpful.
71,775

You're welcome. Most repair facilities can flash the PCM. You'll want to tell them about the engine swap. I really don't know if you need to use the doner vehicle's VIN or not. Earlier today I was looking for something else and stumbled across something else that may help here. A guy with a Chrysler product was having the same problem as you. He finally discovered that his timing chain tentioner was bad. What was going on was the PCM, using erroneous info from the crank and cam sensors, "thought" the engine had jumped timing. Concequently the PCM shut down the engine, only after being driven and shut off, to prevent serious engine damage. I'm wondering if that's what is going on here. If that's the case I suspect the flashing of your PCM should fix it. HTH. -Jim

Your Answer

Malibu

Looking for a Used Malibu in your area?

CarGurus has 67,694 nationwide Malibu listings starting at $880.

ZIP:

Chevrolet Malibu Experts

  • #1
    T_S_T
    Reputation
    2,140
  • #2
    tenspeed
    Reputation
    2,130
  • #3
    Tom Demyan
    Reputation
    1,550
View All

Related Models For Sale

Used Chevrolet Impala
564 Great Deals out of 36,805 listings starting at $990
Used Ford Fusion
1,016 Great Deals out of 69,449 listings starting at $888
Used Honda Accord
1,202 Great Deals out of 74,678 listings starting at $561
Used Toyota Camry
999 Great Deals out of 101,100 listings starting at $300
Used Nissan Altima
1,209 Great Deals out of 88,952 listings starting at $1,500
Used Dodge Charger
380 Great Deals out of 33,529 listings starting at $2,000
Used Hyundai Sonata
852 Great Deals out of 58,922 listings starting at $1,500
Used Nissan Maxima
340 Great Deals out of 23,663 listings starting at $1,200
Used Kia Optima
509 Great Deals out of 36,048 listings starting at $1,995
Used Honda Civic
774 Great Deals out of 67,964 listings starting at $999
Used Chevrolet Equinox
1,094 Great Deals out of 71,020 listings starting at $760
Used Chrysler 300
351 Great Deals out of 20,626 listings starting at $900

Used Cars For Sale

2018 Chevrolet Malibu For Sale
12 Great Deals out of 20,399 listings starting at $14,557
2017 Chevrolet Malibu For Sale
341 Great Deals out of 18,856 listings starting at $10,100
2016 Chevrolet Malibu For Sale
232 Great Deals out of 7,465 listings starting at $9,400
2015 Chevrolet Malibu For Sale
243 Great Deals out of 6,188 listings starting at $7,900
2014 Chevrolet Malibu For Sale
110 Great Deals out of 3,245 listings starting at $5,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.