A 'hunting' Maverick ......

[Teaman]

I am the proud owner of a 1997 Maverick that has taken to 'hunting' on tickover. When the engine check light (crawl home mode) is on it runs ok.
All filters are ok, not long changed so it is not them.

The car is perfect when travelling, it is just when the engine is ticking over at junctions, traffic lights etc.

If anyone has any suggestions what the problem might be/is, and a possible remedy, I will gratefully receive them.:bow

Regards

Paul

 

[Banshee]

I am the proud owner of a 1997 Maverick that has taken to 'hunting' on tickover. When the engine check light (crawl home mode) is on it runs ok.
All filters are ok, not long changed so it is not them.

The car is perfect when travelling, it is just when the engine is ticking over at junctions, traffic lights etc.

If anyone has any suggestions what the problem might be/is, and a possible remedy, I will gratefully receive them.:bow

Regards

Paul

Paul

As it's a Maverick it's likely that you will have the Zexel pump and not the Bosch one I presume.

Does the hunting go away when the car is warm? If so this would indicate glow plugs are at fault however if the car does this when up to temperature then i'd suspect a fuelling issue.

If your main filter has just been changed brilliant, one thing to tick off right away, just ensure that when the engine is running that the hand primer on the top of the filter is solid, you should not be able to pump it at all, if you can shut the engine off and pump it until it goes firm and try again.

Going from there I'd next be checking the banjo bolt on top of the fuel pump, these contain very small metal gauze filters that clog up, I'll find my old posts and post some pics up

 

[Banshee]

In fact before we go any further looking at the age of the vehicle I see you are on that switch over year, do you have the TD or the TDi, the TDI has the air scoop on the bonnet for the intercooler on the later ones.

 

[Banshee]

This is where the Banjo bolt is located on the IP and can be accessed going behind the Power Steering Pump without removing it, you'll just need the right sockets and extensions. Just make sure you don't drop the copper washer.

 

[Banshee]

Give this a go as well, you only need a paperclip :thumb2

Then we'll translate the codes

 

[jims-terrano]

If it's tdi I'm thinking number 1 injector.

Got to admit my project truck is a little the same way but once warmed up it isn't too bad.

 

[Banshee]

Possibly!!!! That's a good shout too, EML flashes are the way forward first I think so we can diagnose exactly where the ECU thinks the issue lies and work back from there.

Free test :thumb2 Good test :thumbs

Make sure you get a decent paperclip and stash it in the centre cubby hole, you'll find there's a small recess for business cards :thumbs

 

[solarman216]

My Zexel pumped road going T2 does this, am told springs in the pump are the problem, my off road Mav does not do it and have swapped No 1 injector so rules that one out, I do have another Zexel pumped T2 scrapper but for the effort of swapping the pump, nah I can live with it, as long as it starts and runs reasonable I am happy, Rick

 

[Teaman]

Hi, thank you for the suggestions.
It is a 2.7 TDI with the air scoop on the bonnet. I have removed the banjo jobbie but there is no filter in it. Now just have to carefully put it back together again tomorrow.
It may be my age but I am not fully understanding the paper clip suggestions. Can you please explain again, and "translate the codes" from where?
I have to say that the old ford anglias, granadas etc were much easier to rectify.

 

[solarman216]

it is all fully explained in the downloads mate just look it up, Rick

 

[solarman216]

Quick Links, 4th down, then Workshop downloads 9th down, Rick

 

[Banshee]

Hi, thank you for the suggestions.
It is a 2.7 TDI with the air scoop on the bonnet. I have removed the banjo jobbie but there is no filter in it. Now just have to carefully put it back together again tomorrow.
It may be my age but I am not fully understanding the paper clip suggestions. Can you please explain again, and "translate the codes" from where?
I have to say that the old ford anglias, granadas etc were much easier to rectify.

If you haven't found it already you can find the PDF guide here;
http://www.nissan4x4ownersclub.com/downloads/workshop/wk29.pdf

Under where your fusebox is you will find a grey plug that is secured with a bracket, given that yours is an early TDi it should be a 14 PIN plug and is your connection into the ECU, you can either keep it simple and use a metal paperclip as a bridge by putting either end into specific pin outs and watch the engine light flash on the dash or you can buy whats called a Consult Cable and use it with a piece of software called ECUTalk and let the laptop do the work for you

Let us know how you get on and we'll go from there

 

[Teaman]

Thanks guys for your suggestions but it is all too technical for me. I have managed to locate a technician and am going to see him on Wednesday.
If all goes well I won't be back but if not ............