Thanks!
Having problems with my 94 Q45
-
.::94Q45::.
- Posts: 33
- Joined: Mon Mar 15, 2010 4:45 pm
- Car: 1994 Infiniti Q45
Having problems with my 94 Q45
My Q45 is acting wierd lately.The car runs good but after 10-20 minutes the car idles goes up and down,the car jerks and something rattles underneath.Also when im driving at slow speeds (10-20mph) there is like a gulp sound coming from the engine which I believe might be a clogged injector,and last I have trouble starting the car when its warmed up and parked for 20 to 30 minutes.Can anyone help me out with these problems I was thinking about selling the car instead of fixing it but still not sure.
Thanks!
Thanks!
-
DeatschWerks
- Posts: 180
- Joined: Wed Jul 27, 2005 9:11 am
- Location: Oklahoma City, OK
- Contact:
Re: Having problems with my 94 Q45
How many miles are on the chassis/engine?
How long have you had the car? Is it maintained religiously?
How does it feel when you give it the beans? If you have good get-up-and-go, it probably isn't an injector.
How long have you had the car? Is it maintained religiously?
How does it feel when you give it the beans? If you have good get-up-and-go, it probably isn't an injector.
-
Q451990
- Moderator
- Posts: 11030
- Joined: Tue Jul 23, 2002 8:21 am
- Car: 1990 Q45 - 118K, 2022 Toyota 4 Runner, 2004 Frontier M/T - 108K, 2012 Xterra (Mom's), 2023 Rogue (Inlaws)
- Location: Columbia, SC
- Contact:
Re: Having problems with my 94 Q45
I'm going to guess MAF or fuel delivery problems - e.g. a bad fuel pump or it's control module. Do you ever hear a "hive of bees" sound from behind your back seat - especially when the tank is below half full?
Heath
Heath
-
.::94Q45::.
- Posts: 33
- Joined: Mon Mar 15, 2010 4:45 pm
- Car: 1994 Infiniti Q45
Re: Having problems with my 94 Q45
Had the car since february of this year also the car just hit 141 k miles. Acceleration is not bad. I do however hear a noise coming from the back seat.By Replacing the control module will this solve the problem?
-
goody90q45
- Posts: 3679
- Joined: Wed Aug 17, 2005 2:07 pm
- Car: 1992 Infiniti Q45 (sold)
- Location: Orangevale, CA
Re: Having problems with my 94 Q45
Is the CEL coming on through any of this? If not, chances are pretty good that there's a fuel delivery problem and that noise you hear coming from the trunk area (the failing fuel pump) has also caused the fuel pump controller to intermittently fail. You're probably going to end up replacing both.
If the CEL is on, or even if it isn't, there's a couple of more simple things to check. As suggested, it could be a MAF issue so clean it with a can of MAF spray, clean the connector of any corrosion and tighten the pins. I'd also ohm test the injectors just to rule it out. It only takes a few minutes when measured at the harness connector. A bottle of Redline S1 fuel injection system cleaner in a 1/2 tank of gas will do wonders also.
With 141k on your engine if you've never replaced the fuel pump it's overdue.
If the CEL is on, or even if it isn't, there's a couple of more simple things to check. As suggested, it could be a MAF issue so clean it with a can of MAF spray, clean the connector of any corrosion and tighten the pins. I'd also ohm test the injectors just to rule it out. It only takes a few minutes when measured at the harness connector. A bottle of Redline S1 fuel injection system cleaner in a 1/2 tank of gas will do wonders also.
With 141k on your engine if you've never replaced the fuel pump it's overdue.
Re: Having problems with my 94 Q45
How do I upload pictures so I can get sum help with searching for part