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| 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 https://www.auszookers.com/forum/viewtopic.php?f=5&t=45614 |
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| Author: | tonyevans [ Thu Mar 27, 2014 1:44 pm ] |
| Post subject: | 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Hi all – I have a 1998 GV 2.5lt V6 which starts great – Idles OK – accelerates well but when I level out for constant revs in any gear it cuts in and out as if someone was turning the ignition or fuel on and off. I do NOT have any engine light and tested it with Rhinomans magic box and one of the O2 sensors’s showed bad so I replaced both and in a static test IE holding rev’s up at about 3000 with the car stationary it seemed to be good but when I took it for a drive it was still the same. If the engine is under load as in accelerating or going uphill it seems fine or for the first few minutes when it is cold it seems OK but as soon as it warms up it starts cutting in and out. Any ideas? |
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| Author: | bohuler [ Thu Mar 27, 2014 1:58 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse |
Exhuast blockage? Undo the flange below the headers and repeat test. If no change move to the flange behind the cat and try again. Dave |
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| Author: | tonyevans [ Thu Mar 27, 2014 2:10 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse |
I am not doubting you at all Bohuler but it runs fine otherwise - How would that cause this problem only? Just trying to learn. How do I drive it up the road with the exhaust hanging? |
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| Author: | bohuler [ Thu Mar 27, 2014 3:19 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse |
No need to have it hanging, just undo it enough to separate the 2 flanges. It sounds like the way my GV was running with a munted catalytic converter. It 'fixed' itself when I went to chop out the exhust with a sabre saw and only got half way through. Before the chop it would idle fine but under load it would break down and not get above 2500-3000rpm. It was like it was hitting the rev limiter is the best way to describe it. Dave |
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| Author: | tonyevans [ Thu Mar 27, 2014 3:27 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse |
AH! OK - No mine is revving out fine and will pull fine it is only when the revs/speed levels out and the motor is just trying to maintain speed with no real load. |
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| Author: | tonyevans [ Mon Apr 14, 2014 1:56 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Right - I have replaced BOTH O2 sensors and the Throttle Position Sensor but no change so have done a Video so you can hear what it is doing. It starts fine, fist time every time hot or cold. It has a very slight pulse in the revs at idle. When I raise the revs to over 2000 (Anywhere over) and hold it steady it cuts in and out as you can hear in this video. https://www.youtube.com/watch?v=CZhm7qi ... e=youtu.be Sorry don't know how to embed a video  Any ideas what I can try next? |
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| Author: | zoukshin [ Mon Apr 14, 2014 2:31 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Wow that's weird ... gas pedal cable steady, but the revs go a bit nuts. That screams sensor issue or ECU to me. |
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| Author: | fordem [ Tue Apr 15, 2014 6:48 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
I know you've changed the TPS already, but, that's what I think it is - try connecting a volt meter to the center pin and with just the ignition on, measure the voltage as you slowly open & close the throttle, is it a smooth variation? You can also use the Rhinoview interface & software to see what the ECU is seeing for throttle position. What I'm thinking is that the fuel is being cut which happens if the ECU thinks the throttle is closed (from the TPS) whilst the engine rpms are above idle - for example, if the engine is on the over run, because you've down shifted on the approach to a corner - it will disable the fuel injection, until the rpms drop (I don't remember the exact rpm) and then enable it, probably at a level based on airflow from the AFM, rpms will then jump and the cycle repeats. |
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| Author: | tonyevans [ Tue Apr 15, 2014 6:58 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Thanks Fordem. I will try getting Rhinoview working today (I have been having problems with it disconnecting on my new laptop) What you say makes sense and that is why I replaced the TPS. |
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| Author: | tonyevans [ Fri Apr 18, 2014 8:08 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
It has been suggested by a local mechanic that it is the Mass Air Flow but after emailing Greg at 4WD Products he says there is no listing for the sensor only the whole throttle body? Can anyone shed any light on this????? |
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| Author: | fordem [ Sat Apr 19, 2014 12:29 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
No, Suzuki does not supply the MAF separately from the throttle body, it can be removed, I believe there are third party sensors available, and I'm fairly certain I've seen people complain that they don't work properly. |
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| Author: | tonyevans [ Thu May 08, 2014 3:39 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
OK - I have a MAF sensor just arrived from the USA but will not have time till next week to fit it. I can see why Suzuki say don't touch it inside or try to clear it. Fragile is the word all right. If anyone is interested I will try and get a picture of the inside the intake bit. |
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| Author: | MacDaddy [ Fri May 09, 2014 4:00 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
tonyevans wrote: OK - I have a MAF sensor just arrived from the USA but will not have time till next week to fit it. I can see why Suzuki say don't touch it inside or try to clear it. Fragile is the word all right. If anyone is interested I will try and get a picture of the inside the intake bit. Yes please... 
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| Author: | tonyevans [ Fri May 09, 2014 8:32 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
MAF For V6 2.5lt GV  Inside the tip 
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| Author: | tonyevans [ Mon Jun 16, 2014 12:13 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
I finally got all the other "Must Do" jobs done and have had time to get back to this one. I put the new MAF sensor in but it is still the same and I still can not get Rhinoview to connect and stay connected to the ECM so I guess it must be the ECM little black box that is at fault. Anyone know the best place to look for a working one? |
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| Author: | atari4x4 [ Mon Jun 16, 2014 12:43 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
that's really odd tony, maybe remove & pop the top off the ecu to see if there are any blown resistors etc. they do suffer from getting wet when the a/c drain blocks, wonder if it's water damaged at all? to embed youtube vids, hit the share button on the youtube vid, copy the jibber jabber that looks like this "http://youtu.be/CZhm7qinyYs" delete everything that's not in bold http://youtu.be/CZhm7qinyYs bung the youtube tags on it [youtubehd ]CZhm7qinyYs[/youtubehd ] so it looks like this without the spaces. and bam, there is your vid, wonder if it is an ecu problem if you can't get rhinoview to work?  |
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| Author: | tonyevans [ Fri Jul 11, 2014 1:05 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Finally got back to this and decided that even though the ECU was NOT putting out a error code I would pull it out and open it up and think I found the problem - I find it hard to understand how it worked at all? 
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| Author: | atari4x4 [ Fri Jul 11, 2014 1:23 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
that's crusty... check the a/c drain, it's probably blocked. |
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| Author: | JrZook [ Fri Jul 11, 2014 3:06 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
 Looks like a pretty high tide! It is an engineering marvel when the ECU is positioned under a heater core or a vent. Demands highest spare parts profit. With a can of contact cleaner and a scrub you *might* be able to save it depending on the underlying damage. |
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| Author: | zoukshin [ Fri Jul 11, 2014 3:28 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Wow I can't believe it still worked. The code must not do much (if any) CRC - there is no way all this crap wouldn't change the capacity, resistance, inductance etc. between circuits. Also, is that PoS not sealed at all ? I am absolutely shocked ... that can happen to all of us GV owners. Any good tech to minimize the risk ? |
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| Author: | tonyevans [ Fri Jul 11, 2014 3:33 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
As Atari said it's the AC that gets it - I have found a replacement and it WILL be waterproofed before installing. |
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| Author: | murcod [ Sat Jul 12, 2014 3:40 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Wow, I'm amazed you were able to even start the engine! You might be able to salvage that ECU. Isopropyl Alcohol is what is used in the electronics industry to clean PCB's (printed circuit boards) off - use it with a short bristled brush to remove all the crud. Then it let dry completely. You never know, once it's clean (removing all sorts of odd resistance problems) it might be okay. |
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| Author: | ninjamoses [ Sat Jul 12, 2014 4:57 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Far out, kind of impressive that it even worked at all. You've got me curious now - think I'm going to rip mine out and take a peek also just to make sure. |
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| Author: | tonyevans [ Wed Jul 23, 2014 8:41 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
 New/second-hand ECU arrived from a good (Thank you very much Freefall) so I just plugged it in and sat it on the floor - hit the key and it purrs like a cat - Rang the blue slip tester in the Ridge and he is off on holiday so another week or so before Rego 
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| Author: | tonyevans [ Fri Jul 25, 2014 12:48 pm ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Hey Atari - Where is the AC drain please - My FSM says Nothing about it? |
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| Author: | fordem [ Sat Jul 26, 2014 10:59 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
At the bottom of the evaporator housing - exits low down on the passenger side firewall - look for a couple of inches of 1/2" hose sticking out & going nowhere - usually easier to see from underneath. |
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| Author: | tonyevans [ Sat Jul 26, 2014 11:26 am ] |
| Post subject: | Re: 1998 GV 2.5lt V6 will not cruse - Video Added - 14/4 |
Thanks mate - I will have a look this arvo ............... Maybe |
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