i have a couple issues with my q, when im starting off it has slight hesitatyion and it also happens between 40-50, it doesnt do it if i get on it a little bit... also, it seems like it shifts slowly? also it feels like a kind of rough idle....i dont know if the hesitation and idle are related or not? thanks for any input.
ryan
couple small problems
-
maxnix
- Posts: 22627
- Joined: Mon Jul 22, 2002 8:11 pm
- Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45
Re: couple small problems (91-q45)
RTFSM.
Read all posts by Q45tech.
Pay special attention to ATF flush and BG machine.
Then look at TB cleaning and under plenum hose replacement.
Next, include your maintenance history.
Read all posts by Q45tech.
Pay special attention to ATF flush and BG machine.
Then look at TB cleaning and under plenum hose replacement.
Next, include your maintenance history.
Re: couple small problems (maxnix)
take it to your local Infiniti dealer,pay for the 1 hour Consult diagnosis,then post results here for money saving ideas on how to correct items uncovered!
Re: couple small problems (91-q45)
Two cheap and easy things you can try.
1. Get ahold of some BG 44K injector cleaner. Dump it in the tank and take the car for a good spin on the freeway. Exercise it.
2. Clean your MAF connector as well as the MAF itself. Instructions here:
http://www.q45.org/maf.html
See if that helps.
1. Get ahold of some BG 44K injector cleaner. Dump it in the tank and take the car for a good spin on the freeway. Exercise it.
2. Clean your MAF connector as well as the MAF itself. Instructions here:
http://www.q45.org/maf.html
See if that helps.
-
elwesso
- Posts: 30810
- Joined: Sun Feb 23, 2003 4:52 pm
- Car: 94 Infiniti Q45t 5 spd
2007 BMW M Coupe
2007 Infiniti G35 S 6MT - Location: Indiana
- Contact:
Re: couple small problems (96Qowner)
If you have a rough idle its probably related to your injectors.
-
Haitian_King
- Posts: 2868
- Joined: Sat Jan 13, 2007 8:20 pm
- Car: 1992 Black Infiniti Q45 /w TCS
1995 Black Infiniti Q45 - Location: South NJ/PA/Canada
Re: couple small problems (elwesso)
I concur. Ohm your injectors. Toss any injector that doesn't read between 10-14 Ohms.
Get a voltmeter first if you don't have one. People are fond of tossing out gems like that, as if everyone possesses a voltmeter. Make sure to get a Geiger counter as well. (Not really.)
Cross your fingers and hope it's the 1, 2, or #8 injector, because those are the easiest to get to. I had a bad #8 and replaced it nice and easy. I paid $6.25 for the injector and $45 for labor. Not bad. The shop that diagnosed the problem wanted $313 for an aftermarket one.
The slow shifts? Perform the transmission self-diagnostic. Page 41 of the AT section in the FSM.
Compare the codes, and tell us what it says. If the message comes up "OK", try to get a BG flush. I did. It seemed to clear up the slow shifts.
I spent about an hour poring over the AT section of the FSM and I'm filled with newfound knowledge.
Get a voltmeter first if you don't have one. People are fond of tossing out gems like that, as if everyone possesses a voltmeter. Make sure to get a Geiger counter as well. (Not really.)
Cross your fingers and hope it's the 1, 2, or #8 injector, because those are the easiest to get to. I had a bad #8 and replaced it nice and easy. I paid $6.25 for the injector and $45 for labor. Not bad. The shop that diagnosed the problem wanted $313 for an aftermarket one.
The slow shifts? Perform the transmission self-diagnostic. Page 41 of the AT section in the FSM.
Compare the codes, and tell us what it says. If the message comes up "OK", try to get a BG flush. I did. It seemed to clear up the slow shifts.
I spent about an hour poring over the AT section of the FSM and I'm filled with newfound knowledge.
Re: couple small problems (Haitian_King)
howd you get an injector for $6.25???????? thats so cheap. i will let you know.
-
maxnix
- Posts: 22627
- Joined: Mon Jul 22, 2002 8:11 pm
- Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45
Re: couple small problems (91-q45)
Gamble on used. Not smart unless you like to repeat labor often.91-q45 wrote:howd you get an injector for $6.25???????? thats so cheap. i will let you know.
-
Haitian_King
- Posts: 2868
- Joined: Sat Jan 13, 2007 8:20 pm
- Car: 1992 Black Infiniti Q45 /w TCS
1995 Black Infiniti Q45 - Location: South NJ/PA/Canada
Re: couple small problems (91-q45)
I got a set of 4 injectors for $25. Known good injectors recently pulled from a 91 Q. Used OEM Q injectors are about 10x better than aftermarket (excluding Deatschwerks) according to Wes.
The way I see it, this gamble paid off. It took my bouncing Q and transformed it into a smooth idling rocket. I had to turn my radio off and listen hard to see if my engine was still on at a red light. That's how smooth it was.
Seeing as how injectors tend to go one at a time, I'm glad that I have 3 more good ones to replace the bad ones with.
$6.25 and having it fail is a damn sight better than $313 (for aftermarket) and having that fail.
Yeah?
I paid $45 to replace the injector. Not bad. I wouldn't mind repeating that. Hopefully by the time I need to replace another one, I'll be able to do it myself.
Practice makes perfect.
The way I see it, this gamble paid off. It took my bouncing Q and transformed it into a smooth idling rocket. I had to turn my radio off and listen hard to see if my engine was still on at a red light. That's how smooth it was.
Seeing as how injectors tend to go one at a time, I'm glad that I have 3 more good ones to replace the bad ones with.
$6.25 and having it fail is a damn sight better than $313 (for aftermarket) and having that fail.
Yeah?
I paid $45 to replace the injector. Not bad. I wouldn't mind repeating that. Hopefully by the time I need to replace another one, I'll be able to do it myself.
Practice makes perfect.