When it rains my 02 Nissan Maxima has crazy electrical problems HELP!!!!

Asked by Mar 27, 2013 at 08:19 AM about the 2002 Nissan Maxima GXE

Question type: Maintenance & Repair

Everytime it rains fairly hard my 2002
Nissan maxima acts crazy. First off
the speedometer jumps up to
between 20 and 30 mph while still in
park, the electronic driver seat stops
working and then everytime you hit
the brakes the abs engages. On top
of that the car takes off in 2nd gear.
It's an automatic. So far the
mechanic has no idea what is wrong.
He has replaced the drivers side rear
speed sensor because he said it was
giving off a code. But that had not
fixed the problem. We realize
something's getting wet but have no
clue on where to start. Any ideas
would be greatly appreciated.

2 Answers


Follow the wiring harness from the engine compartment. It gets larger and it passes through the fire wall. Check for any moisture at the connectors. Put some dielectric grease on the connectors to seal out water and prevent corrosion. --- The wire continues inside under the dash. Look for evidence of a cowl leak. Unplug the connectors and dielectric grease the contacts there too.

1 of 1 people found this helpful.

First check and clean all electrical grounds in the engine compartment including the battery. You are stating the speedo and tranny and seat are acting up, so I would start checking connections inside next. You may need to remove carpet, seats, other interior components. You really need to check all of the connectors to everything, make sure they are clean, no corrosion, seal good and dry. Take a good look at wiring harnesses, water can enter them and travel through them causing all kinds of trouble. Make sure that all of the body drains are functioning and not plugged. This is going to be a lot of work, so I recommend that you get yourself a good shop manual with a wiring schematic and component locator, it will really help.

1 of 1 people found this helpful.

Your Answer

Nissan Maxima Experts

  • #1
    Tom Demyan
  • #2
  • #3
    Princess Ylda Cadely
View All

Related Models For Sale

Used Nissan Altima
749 Great Deals out of 67,282 listings starting at $750
Used Honda Accord
529 Great Deals out of 93,656 listings starting at $1,495
Used Toyota Camry
787 Great Deals out of 71,592 listings starting at $175
Used Chevrolet Impala
375 Great Deals out of 27,000 listings starting at $1,000
Used Honda Civic
341 Great Deals out of 52,141 listings starting at $1,200
Used Chevrolet Malibu
604 Great Deals out of 48,316 listings starting at $1,800
Used BMW 3 Series
910 Great Deals out of 33,016 listings starting at $1,000
Used Chevrolet Camaro
243 Great Deals out of 29,880 listings starting at $4,980
Used Acura TL
60 Great Deals out of 3,421 listings starting at $1,995
Used Kia Optima
371 Great Deals out of 28,940 listings starting at $1,950
Used Ford Mustang
288 Great Deals out of 38,306 listings starting at $1,995

Used Cars For Sale

2017 Nissan Maxima For Sale
44 Great Deals out of 4,438 listings starting at $15,991
2016 Nissan Maxima For Sale
39 Great Deals out of 1,341 listings starting at $13,980
2014 Nissan Maxima For Sale
74 Great Deals out of 2,170 listings starting at $7,777
2013 Nissan Maxima For Sale
16 Great Deals out of 533 listings starting at $5,000
2012 Nissan Maxima For Sale
15 Great Deals out of 513 listings starting at $5,997

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.