Fiat Coupe Club UK

Injector light on when taking foot off the clutch

Posted By: crgracing

Injector light on when taking foot off the clutch - 04/11/2018 10:38

Had a issue with the injector light. Connected startrek and managed to find a spare throttle valve sensor.

Changed it last night no problems.

This morning as I pull away the ABS light comes on and the injector light aswell making the car go up and down in the revs.

So put her in neutral and problem disappears. I tu again, first gear and as soon As I start taking my foot off the clutch injector light again and reving up and down.

In neutral the car is great 900 rpm no injector light everything demes Ok.

Any ideas?

Thanks.
Posted By: DaveG

Re: Injector light on when taking foot off the clutch - 04/11/2018 10:58

Did startrek identify the initial fault as the TPS?

What does it say now?
Posted By: crgracing

Re: Injector light on when taking foot off the clutch - 04/11/2018 13:59

Yep first error was the TPS. Checked again and the TPS appears in red again.

The rest is OK.

Thanks.
Posted By: DaveG

Re: Injector light on when taking foot off the clutch - 04/11/2018 14:30

Are you sure the ABS light is not just the brake fluid level light, will come on under sharp acceleration/braking/cornering if the level is low. And maybe the spare TPS is also faulty or perhaps more likely, the wiring/connector to the TPS is faulty, bad earth perhaps?
Posted By: crgracing

Re: Injector light on when taking foot off the clutch - 04/11/2018 14:41

For the ABS light not possible to come on the conditions you mention has I cant pull aways and get her into first gear.

Ill give it a check on the earth of the TPS. Could be possible that its also faulty they are very expensive so have to be sure before buying a new one.

Tía la.
Posted By: Anonymous

Re: Injector light on when taking foot off the clutch - 04/11/2018 18:33

If the ABS light comes on as soon as you start moving then probably a dodgy wheel sensor, if ABS light comes on as you release the clutch and revs drop but before you start moving then could be dodgy alternator or battery causing voltage drop, as that will also cause an ABS warning light.
Posted By: crgracing

Re: Injector light on when taking foot off the clutch - 04/11/2018 20:05

Would it have anything to do with the injector light and reving up and down?
Posted By: Anonymous

Re: Injector light on when taking foot off the clutch - 04/11/2018 22:49

Originally Posted By crgracing
Would it have anything to do with the injector light and reving up and down?


Maybe, but I don't know enough about the 16v ECU and why it lights the injector light to be sure.
Posted By: barnacle

Re: Injector light on when taking foot off the clutch - 05/11/2018 05:25

Sounds like a lot of things are lying to the ECU - are all the earths intact?
Posted By: crgracing

Re: Injector light on when taking foot off the clutch - 05/11/2018 16:25

Have to get them all checked.

Could there be anything else involved?

Thanks
Posted By: Master_Mariner

Re: Injector light on when taking foot off the clutch - 06/11/2018 09:30

Water getting in to the ecu? That would cause havoc.

Is it dry etc?

Good luck with this- electrical gremlins are the bane of many!

Regards

MM
Posted By: crgracing

Re: Injector light on when taking foot off the clutch - 07/11/2018 18:40

Hahahah I will never ver rid of her! If I cant find the issue it will go staright into my living room hahahah.

Ill get to it on the weekend, but were can I find wire diagrams as I do no know were all the earth connections are.

Thanks.
Posted By: barnacle

Re: Injector light on when taking foot off the clutch - 08/11/2018 17:30

Bad news... the wiring diagrams for the 16v don't include the loom locations like the 20v, which is a shame. What you find in the member's tech manuals is all we've got.
Posted By: crgracing

Re: Injector light on when taking foot off the clutch - 09/11/2018 18:10

Soy ideas were to start?

I have checked the earth on the gearbox and its ok.

Aún one with 16vt knows were to keep looking?
Could a dead battery also cause this issue?
Posted By: crgracing

Re: Injector light on when taking foot off the clutch - 10/11/2018 12:24

As I have the battery in the boot, I took it out. Cleaned both terminals actaully cleaned all of them.

Went through all the wrinig, cut out the rusted areas.

Checked the TPS position moved around and looks like she is running with no issues.

I hope it das only that.

Ill get back if she dies again.

Thanks.
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