Replaced starter and alternator on my F150, but still having troubles..

Asked by Jun 29, 2017 at 06:18 PM about the 2008 Ford F-150 XLT

Question type: Maintenance & Repair

My starter went out on my truck so I replaced it. It
still took a few seconds to start up, so naturally I
thought it was the battery. The battery is perfect,
so I took the alternator to autozone and found out
it was bad. I replaced the alternator and checked
the battery again (which is good), but it's still
lagging to start. Also when it starts the gauges will
flicker. I'm not sure if it's a relay, switch, or what,
but I would like some advice before spending
another 200 bucks for the same issue. Can
someone please help? I work on Chevy not Ford's
so this is new.

2 Answers

735

Saying you work on chevys and not ford, what does that even mean. Did your ford not have 4 wheels and an engine, like the chevys do. Your issue maybe multiple things, a long crank before starting can indicate bad reading form a mas air sensor. Or bad injectors, high resistance in the starter circuit, the other symptoms could be loose ground circuits or a number of things, u need to do basic tests that apply to all cars, like checking the amp draw while cranking( using an amp clamp) on the starter red wire. Check charging voltage, hooking up a fuel pressaure gage and see the fuel psi while cranking, and other tests used to diagnose a starting concern

905

The main ground wire for the truck goes to one of the starter bolts. The cable connector on these cables are thin and weak. If it is not clean and tight. The starter will turn slowly and cause all sorts of strange electrical issues. Also make sure the battery terminals are clean and tight.

Your Answer

Ford F-150 Experts

  • #1
    OJ
    Reputation
    8,760
  • #2
    dandyoun
    Reputation
    4,490
  • #3
    tennisshoes
    Reputation
    3,010
View All

Related Models For Sale

Used Chevrolet Silverado 1500
179 Great Deals out of 10,755 listings starting at $2,500
Used GMC Sierra 1500
237 Great Deals out of 10,492 listings starting at $2,995
Used Dodge Ram 1500
59 Great Deals out of 535 listings starting at $2,995
Used Ford F-250 Super Duty
18 Great Deals out of 778 listings starting at $3,000
Used Toyota Tundra
14 Great Deals out of 767 listings starting at $3,999
Used Toyota Tacoma
32 Great Deals out of 797 listings starting at $5,995
Used Ford Mustang
11 Great Deals out of 1,181 listings starting at $2,995
Used Nissan Titan
24 Great Deals out of 667 listings starting at $710
Used Chevrolet Colorado
14 Great Deals out of 1,354 listings starting at $1,999
Used Chevrolet Tahoe
5 Great Deals out of 642 listings starting at $6,871
Used Ford Explorer
37 Great Deals out of 1,367 listings starting at $3,900
Used Ford F-350 Super Duty
30 Great Deals out of 1,061 listings starting at $8,000
Used Chevrolet Silverado 2500HD
13 Great Deals out of 815 listings starting at $5,995

Used Cars For Sale

2017 Ford F-150 XLT For Sale
2 listings starting at $34,549
2016 Ford F-150 XLT For Sale
2 listings starting at $21,995

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.