stuttering Q ?'s

Post by **BlackBirdVQ** » Tue Mar 21, 2006 7:38 pm

So which injector did go bad ?

Post by **96Qowner** » Wed Mar 22, 2006 6:13 am

LOL, you coulda said sumpin earlier, you know. We'll see. The code reader will have a MAF code or not.

Besides, what about the easy restart? If it's an injector, you'd have a rough restart, no?

Post by **maxnix** » Wed Mar 22, 2006 10:30 am

96Qowner wrote:Besides, what about the easy restart? If it's an injector, you'd have a rough restart, no?

Why I am thinking you should treat for water in gasoline, first. ISO-HEET is cheap.

Post by **blind6** » Wed Mar 22, 2006 11:15 am

Yeah I'm gonna do the ISO-Heet today, how long before it takes effect or is it immediately?

Post by **blind6** » Wed Mar 22, 2006 2:28 pm

The parts store had only HEET so to be sure I picked up PYROIL Isopropyl fuel dryer. Alittle black smoke came out the exhaust after I added it. The engine continues to have an uneasy idle. I checked the battery and at idle it was at 14 then under load(lights,ac,radio,interior lights) it was in the 12's. I wiggle on the connector on the MAF and nothing happened till I piulled it off and then the motor died. I started it back up and it still had a uneasy idle. That's all I can report right now.

Post by **BlackBirdVQ** » Wed Mar 22, 2006 3:01 pm

Its a misfire code... when Maximas misfire they also set a TCS light on. Hondas do similar with TCS or VTM4 lights that come on along with CEL.

Injectors do not automatically die and stop working all togheter. Sometimes when they are in the 18-20ohm range they still work sometimes, but you get uneven idle. My 94 had some bad injectors and it would start to misfire when idleing for too long- give it some gas and it would clear back up. I had my injectors redone (durring my engine rebuild) at Deatsch Werks and the car idles smooth like new again after my engine rebuild.

Get a OHM meter and start to ohm out the injectors you can get to the connector on. I am willing to bet there will be atleast 1 out of spec. Thank JECS for those wonderfull injectors.

Post by **blind6** » Wed Mar 22, 2006 3:12 pm

What are the specs for the injectors, and how exactly do you test them. Positive on the injector and a good ground? I'll post back in a few with results.

Post by **blind6** » Wed Mar 22, 2006 3:30 pm

I wasn't sure whether to use ohms or kohms so i did both. I could only get 5 of the 8 injectors. they were all reading -60ohms and -18kohms do those numbers sound correct? Car is idling much smoother now, the fuel dryer may have done it.

Post by **maxnix** » Wed Mar 22, 2006 4:33 pm

Use another can in the next tank and once a month from now on.

Injectors should be 12-14 ohms. Do a search in Infiniti Online Mechanic Forum on how to access tehm from the harness. Not definitive, but easier.

Post by **blind6** » Wed Mar 22, 2006 5:16 pm

Alright, thanks. I haven't road tested yet but I will tonight then post up. I'll check the other links also, thanks.

Post by **BlackBirdVQ** » Wed Mar 22, 2006 5:49 pm

U need to hit BOTH prongs inside the injector clip side with the Ohm meter, good injector will be bout 11-12ohms, if you are over 13 ohms on a injector it means it will be at about 20ohms in about a month time- and with 20 ohms the injector will slowly start to misfire letting itself know mostly at idle. When they get over 50ohms they stop working. Personal experience with Nissan/JECS injectors I have done hundreds of in the past.....

If the 97-01 injectors are like 94-96 Q45- meaning they are 370cc, you can also use repleacement injectors from a 95-96 300ZX Twin Turbo, and MOST SR20DETs.

Post by **blind6** » Wed Mar 22, 2006 11:10 pm

Took the car for a drive and it still stumbles when going uphill and after it started the idle continued to be unsteady and the TCS light and SLIP light came on. It died a repeatedly on the drive back to the lot where I am keeping it. Tomorrow I am going to check the injectors and drain as much fuel out as I can then refill with new fuel.

1. Is this still sounding like the MAF or could it be something else?

2. Is there a way to bypass the MAF or bench testing. I've wiggled the clip and it didn't change the idle until I removed it and the motor died.

Post by **maxnix** » Thu Mar 23, 2006 3:24 am

What gear are you in and at what rpm going up hill?

Have you verified your battery and alternator are up to spec?

Not heraing any loud buzzing from behind the back seat?

You may have more than one problem. Why we always ask for a maintenance hsitory in Infiniti Online Mechanic, where this post should be.

Moderators asleep at the wheel, again.
Modified by maxnix at 12:36 PM 3/23/2006

Post by **Falkdesigns** » Thu Mar 23, 2006 7:15 am

It's proof in point though, it's also posted in Inf. Online Mech, no one replies, but in this forum, it's gone 2 pages.

Post by **blind6** » Thu Mar 23, 2006 11:10 am

This seems like the place to be....I did a post in the online mechanics and I had a couple responses. This is where it gets the attention. Sorry, but I had to go where the people looked.

Gear is 2nd or 3rd and around 2000rpm I think, Battery and alt are in spec, no loud buzzing comming from the back seat area or trunk.

1. Is this still sounding like the MAF or could it be something else?

2. Is there a way to bypass the MAF or bench testing. I've wiggled the clip and it didn't change the idle until I removed it and the motor died.

If it received this much attention in online mechanic I would go there but I felt like all I was typing was "Bueller"

Post by **Falkdesigns** » Thu Mar 23, 2006 11:15 am

Notice how much help you've gotten from someone that's supposedly the Q45 guru here: none.

Post by **blind6** » Thu Mar 23, 2006 11:18 am

I take help where I can get it. Me explaining this to the forum is like telling and bird about flying. I'll continue this in the online mechanic where it belongs....."Bueller"

Post by **blind6** » Thu Mar 23, 2006 11:20 am

BTW Falk did you get my addy to ship those springs?

Post by **maxnix** » Thu Mar 23, 2006 11:28 am

Maybe a moderator will combine the posts?

Where is Daedalus anyway?

Post by **Falkdesigns** » Thu Mar 23, 2006 11:29 am

blind6 wrote:BTW Falk did you get my addy to ship those springs?

Yep, got it, I replied to the email too.

Post by **blind6** » Thu Mar 23, 2006 11:47 am

Cool, thanks I haven't been at work in a couple days.

stuttering Q ?'s

Re: stuttering Q ?'s (blind6)

Re: stuttering Q ?'s (BlackBirdVQ)

Re: stuttering Q ?'s (96Qowner)

Re: stuttering Q ?'s (maxnix)

Re: stuttering Q ?'s (blind6)

Re: stuttering Q ?'s (blind6)

Re: stuttering Q ?'s (BlackBirdVQ)

Re: stuttering Q ?'s (blind6)

Re: stuttering Q ?'s (blind6)

Re: stuttering Q ?'s (maxnix)

Re: stuttering Q ?'s (blind6)

Re: stuttering Q ?'s (blind6)

Re: stuttering Q ?'s (blind6)

Re: (Falkdesigns)

Re: (Falkdesigns)

Re: (blind6)

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Re: (Falkdesigns)

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