RhinoPower Ltd

charliemoonbeam · Member

RE: Vitara Surging; out of ideas!

charliemoonbeam · Member

No. I did change the wires across the fuel injectors (the ones that lpug into the TPS) as I wondered if it was the wiring into the plug.

Who would have a scan tool for me to do this?

TechSupport · Guru

Until you get the code 21 to clear then it won't run properly. Its possible that the problem is a bad wire in the loom rather than the TPS itself, has anyone put a scan tool on the vehicle to check what the ECU is seeing?

TechSupport · Guru

charliemoonbeam wrote:
considering setting fire to it in a field at the moment!!

Are you from St Pauls? the entrance to Aztec West always used to be the place for that sort of thing.

TechSupport · Guru

In the absence of a scan tool then you could try checking the voltage at the connector pins with a voltmeter while slowly increasing the throttle position . Your local main dealer should have a scan tool or you can buy one from here:

http://www.rhinopower.org/diag/sdl_if.html

The typical values for a 16V Vitara are listed in this thread:

http://rhinopower.activeboard.com/t52852072/vitara-overfuelling/

charliemoonbeam · Member

1.6, 1995. UK model

charliemoonbeam · Member

Sorry, I thought I had said. It's 16v Multi Fuel Point Injection

TechSupport · Guru

what model is it 8V or 16v?

charliemoonbeam · Member

Hello all,

I bought a new (to me) vitara last September, after my last one dropped a valve and catastrophically broke!

Picked it up, had a misfire, but not all the time, and the Check Engine light came on occasionally. Then it wouldn't always start, although was better if I turned the key and waited for the click of the fuel pump relay before I fired it up. So I changed the relays, and the fuel filter, as it felt like fuel wasn't getting through properly. Also the leads etc. None of this made a significant difference. It sometimes runs fine, then other times surges at 2500 rpm, will do this for a while, clear itself, then be sort of okay, although still lumbers under load and occasionally just because it feels like it.

Long story short, the code suggests TPS (Throttle Position Sensor). Well I still have the old Vit, so changed that and reset it, all readings correct (perfect actually), still showing the fault. So, today, changed ECU and the wiring running along the top of the injectors, in case it was shorting or not working. All of this was working perfectly prior to removal from the old vit, in fact, it ran brilliantly... oh except it had dropped a valve!

Still happening! Code still 21 (TPS or connection to ECU-) but it's all just been changed and reconnected.

I'm clutching at straws now, and considering setting fire to it in a field at the moment!! I would really really appreciate any suggestions?

Thanks

Charlie