No injector pulse

Asked by May 17, 2018 at 06:02 AM about the 2002 Chevrolet Malibu LS

Question type: Maintenance & Repair

I'm a automotive technician, customer had vehicle
towed in intermittent no start. Had replaced fuel
pump and filter. Started and ran but same as b4.
Would run for a week, two weeks ,then nothing.
(Note. Had same problem before fuel pump was
replaced) checked all grounds, checked fuses,
relays, fuel pressure, spark finally no injector pulse
didn't have voltage to injectors with koeo. Nothing
new to me most common problem was ignition
control module. Swapped no fix. Replaced injector
harness got voltage to injectors. Still no start.
Noticed at this time I had no rpms swapped crank
sensor. Still no pulse. New ignition (switch and
tumbler/key) did relean process" never had theft
light solid or flashing" still nothing.  Any ideas?  I've
heard the chip reader for the key. And putting in
resistors.(not tried yet) I've heard knock sensors,
I've heard cam sensor , I've heard oil sending unit.  
All of which I'm up to try . Just never seen a sensor
work then not then work again. Unless related to
tempature or some sort of physical force. I got a
few things left to try but I'm getting short on time ,
other vehicles to fix. Any ideas appreciated. Also
note no codes (checked with 2018 versa scanner)
will start on brake clean. (55psi fuel pressure)

2 Answers


Does the car have a fuel cut off switch under dash and did or do you have another key to try concerning a possible chip issue. Good Luck!

1 people found this helpful.

I got two new keys with the new ignition tumbler. And have not checked enersa switch

Your Answer:

Chevrolet Malibu Experts

  • #1
  • #2
  • #3
    Tom Demyan
View All

Related Models For Sale

Used Chevrolet Impala
14 Great Deals out of 1,077 listings starting at $2,995
Used Honda Accord
30 Great Deals out of 1,753 listings starting at $2,800
Used Toyota Camry
36 Great Deals out of 2,231 listings starting at $1,856
Used Nissan Altima
27 Great Deals out of 1,247 listings starting at $2,995
Used Honda Civic
90 Great Deals out of 5,472 listings starting at $2,395
Used Kia Optima
23 Great Deals out of 789 listings starting at $5,995
Used Hyundai Sonata
29 Great Deals out of 1,430 listings starting at $2,995
Used Chevrolet Camaro
8 Great Deals out of 1,082 listings starting at $4,500
Used Nissan Maxima
10 Great Deals out of 405 listings starting at $3,488

Used Cars For Sale

2018 Chevrolet Malibu LS For Sale
122 listings starting at $22,903
2017 Chevrolet Malibu LS For Sale
3 Great Deals out of 7 listings starting at $18,497
2016 Chevrolet Malibu LS For Sale
10 listings starting at $14,245
2015 Chevrolet Malibu LS For Sale
36 listings starting at $10,500
2014 Chevrolet Malibu LS For Sale
13 listings starting at $11,494

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.