Car turns over but won't start

Asked by Pontiacguy33 Oct 30, 2016 at 06:00 PM about the 2003 Buick Regal LS Sedan FWD

Question type: Maintenance & Repair

Hopefully someone can help me out here. I have a 2003 buick regal ls 3.8l motor 204k . Recent work done New plugs and wires new coils, new front and back valve cover gaskets new fuel filter and fuel pump , new MAF sensor, Both 02 sensors, New PCM ( still have old one and it's apparently good because it didn't solve the po340 code problem. I left work one night and the car stalled out and would crank over but not start. Of course the battery died but I have been using my buick lesabre to jump it.  I had it checked out by a mechanic and he checked the following and they were working, plugs got spark, fuel pump was strong, coils fine naturally, battery was good. The car ran great before this happened the gas pedal seemed a bit tighter that afternoon so I immediately thought the fuel filter or pump which he tested 1st and both were fine

The other day I went out to try to start it again and it wouldn't start so I hooked up my code reader and both the p0340 and p0650 codes that were there before don't show up anymore but then again it only scans for about 15 seconds and it's done. I bought the PCM on ebay and it was programmed to my vin#, my key fob worked right from the start and it ran somewhat fine for a month then this happened . Anyone have any suggestions? I keep thinking I should put the old PCM back in any thoughts on that? i'm thinking maybe something is wrong with it.

4 Answers

35,295

Spray some quick start in the throttle body and see if it starts for a bit, if it does, check fuel pressure, if pressure is above 35psi, check pulses at the fuel injectors

4 people found this helpful.
10

Changed oil in spark plug wiers now the car won't start

1 people found this helpful.

Your Answer:

Regal

Looking for a Used Regal in your area?

CarGurus has 31 nationwide Regal listings starting at $7,990.

Postal Code:

CarGurus Experts

  • #1
    James Sparrow
    Reputation
    760
  • #2
    dvigano
    Reputation
    630
  • #3
    Tom Harmon
    Reputation
    460
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Impala
12 Great Deals out of 112 listings starting at $3,531
Used Chevrolet Camaro
26 Great Deals out of 347 listings starting at $10,500
Used Toyota Camry
49 Great Deals out of 952 listings starting at $2,212
Used Chevrolet Malibu
46 Great Deals out of 1,180 listings starting at $1,495
Used Honda Accord
44 Great Deals out of 907 listings starting at $2,799
Used Ford Taurus
8 Great Deals out of 82 listings starting at $4,880

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. Content will be removed if CarGurus becomes aware that it violates our policies.