Rough idle, check engine light comes on and a heavy smell of gas in Q45T.

Asked by Sep 16, 2010 at 08:11 AM about the 1994 INFINITI Q45 4 Dr A Sedan

Question type: Maintenance & Repair

I've had 4 fuel injectors replaced, 2 knock sensors, and a new fuel filter installed.  This quelled some of the rocking at idle, but the check engine light still comes on sporadically and the smell of gas is still there.  Looking for advice from someone familiar with this problems with the Q45.

1 Answer

10

Once 1 injector goes, eventually, they all are gonna follow suit... Sounds like to me whoever replaced your injectors may possibly have pinched the rubber o-rings during reinstallation, resulting in a leaking injector(s). Your computer is picking up on the fault. By the way, did the repair person clear/reset the computer AFTER the repair? If not, well, the car is gonna run as if something is still causing a problem... by the way, look into pulling the codes from your computer, to see what it shows... might help you pinpoint the problem. There should be a field service manual online that you can access that will list not only the codes,but, a troubleshooting index as well. Lastly, when you DO solve the problem, do the rest of the Q45 family a favor: expose your findings & the problem-solving techniques as well... GOOD LUCK!!!

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Search INFINITI Q45 Questions

INFINITI Q45 Experts

#1 Paul Washburn
Paul Washburn
Reputation 190
#2 Michaela Mous
Michaela Mous
Reputation 140
#3 v8pw
v8pw
Reputation 120
View All

Related Models For Sale

Used BMW 7 Series
174 Great Deals out of 6,093 listings starting at $2,999
Used Honda Accord
1,014 Great Deals out of 76,977 listings starting at $999
Used Mercedes-Benz S-Class
137 Great Deals out of 6,515 listings starting at $2,500
Used BMW 5 Series
482 Great Deals out of 15,869 listings starting at $1,500

Used Cars For Sale

2003 INFINITI Q45 For Sale
16 listings starting at $3,499

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.