Engine tune GQ 2.8 TD

Submitted: Thursday, Jan 05, 2006 at 15:05
ThreadID: 29373 Views:2090 Replies:4 FollowUps:3
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Have a 97 GQ 2.8 TD. Only done 100,000 k but feel the economy/power is not as good as earlier. No real problems such as smoke. Any suggestions on a reliable diesel place that could check performance and perhaps service injectors. Prefer western Victoria or western suburbs of melb for easy access. Also, have people had any success with fuel additives that are supposed to "clean" injectors.

Unit does a lot of running around town interspersed with not frequent enough 4-5 week outback trips so wonder if glazing could be an issue

comments welcome

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Reply By: Member - Bill S (NSW) - Thursday, Jan 05, 2006 at 15:41

Thursday, Jan 05, 2006 at 15:41
HI Outback,Mate fit a FITCH F300 and judge for yourself just what happens and report on this forum,and COBRA motors at Sunshine north can help you talk to CARLO
.My 80srs had 300,000klms when I fitted was returning 7.6klms per litre and after fitting it returned 8.7 to 9.2 klms per litre for the next 200,000. Paid for itself many times over. Now I will cop a lot of flack over giving you this advice but because I know what this device delivers and my knockers dont have a clue so weigh it up for yourself, but it is my advice and its free.And no I dont think glazing would be a problem after driving diesels for the past thirty years, providing regular servicing is maintained.never experianced the problem.

Happy motoring BILLS
AnswerID: 146589

Follow Up By: Truckster (Vic) - Thursday, Jan 05, 2006 at 23:02

Thursday, Jan 05, 2006 at 23:02
Outback, FYI bill sells the fitch for a living, so take what is said as what you would expect from a car salesman.
FollowupID: 400155

Reply By: OldMike - Thursday, Jan 05, 2006 at 19:15

Thursday, Jan 05, 2006 at 19:15
Have had glazing on agricultural machinery, which usually manifests itself with high oil consuption not usually power down or fuel consumption.

Usually fixed by putting heavy load on engine or a hand full of Handy Andy powder down the air intake.

Check air filter.

hope this is some help

AnswerID: 146641

Reply By: Truckster (Vic) - Thursday, Jan 05, 2006 at 23:06

Thursday, Jan 05, 2006 at 23:06
Maybe your getting used to the lack of power the 2.8 has.

Ive tried Nulon fuel additive, but cant really say it did much, or if it didnt.

Glazing. A few good ~100km runs up and down the freeway, putting load on the engine on and off will clear any glazing.

Usually notice how well teh truck seems to go after a good run or during a long trip?

I can recommend a few good places dande side of melb, or if your willing to spend a day in Wagga, goto Denco. They really sorted out my GQ better than anyone else.

good luck.
AnswerID: 146691

Follow Up By: Leroy - Thursday, Jan 05, 2006 at 23:12

Thursday, Jan 05, 2006 at 23:12
You should of fitted a fitch dude, no need to get a tune at denco. If you pots are glazed it will hone them beautifully! But best of all your 4.2 will perform like a 6.5 chev with twin turbos having the fuel ecconomy of a Barina. Man,,, when are you going to see the light! And bill Sssss when are ou going to stop making pie in the sky claims!!

FollowupID: 400160

Follow Up By: Truckster (Vic) - Thursday, Jan 05, 2006 at 23:18

Thursday, Jan 05, 2006 at 23:18
you forgot, it will MAKE fuel... not use it...

and it will have more power than 12 Jumbos, and similar torque as 200 prime movers.
FollowupID: 400164

Reply By: bombsquad - Friday, Jan 06, 2006 at 00:08

Friday, Jan 06, 2006 at 00:08
I have the 2.8 GU and have a similar 'feeling' about the economy anyway. I put a post in a while back and got many good sugestions. I'm not sure if the GQ is electronically conrolled like mine, but one of the things I have done is clean the air flow sensor. Ive only done one trip so far since, but that alone seems to hae given me an improvement of around 1 lite per 100k improvement, but I'll learn more after next weeks trip to work. These little engines (mine at least) have plenty of power when driven to suit them, but they really seem to feel any new taxes. The car seemed to be more responsive after cleaning the snsor, but it could be all in my mind. The EGR valve could be next....followed by lpg fumigation

Cheers andrew
AnswerID: 146714

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