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1998 Holden Rodeo Repair Question


Topics covered: Gas, Wiring.
Mileage: No information provided.

Asked on November 26, 2011

One fuel injector losing pulse signal when connected, all injectors checked and working.

I have a 3.2 v6 holden Rodeo, on gas and petrol, when running on gas all is ok, when on fuel one injector is not working, have found when connecting the injector the pulse is very faint, have checked all injectors and all are good and working, please help.
Avatar Asked by 98 rodeo

Answer

Replied on November 26, 2011

What's the difference between gas an petrol? To me they're the same thing. Have it scanned for codes. Check the wiring to the injectors for shorts, opens, and frays.

Tiny Answered by rivermikerat (expert)
5,494 answers provided
Replied on November 26, 2011

What I meant is LPG and petrol, have also checked all wiring to the ECM from the injectors and they all have good continuity, could it be a fault in the ECM.

Tiny Response from 98 rodeo
1 question asked
Replied on November 26, 2011

Yes. It could be. How does the signal to the faulty injector compare with the signal to the other injectors?

Tiny Answered by rivermikerat (expert)
5,494 answers provided

Replied on November 26, 2011

When the injector is not connected the signal is strong, from the connector, and when it is connected it is very week, I have tried this with an injector that works on the other connectors not fitted to the block on the faulty one.

Tiny Response from 98 rodeo
1 question asked
Replied on November 26, 2011

It sounds like the injector has an internal short to ground.

Tiny Answered by rivermikerat (expert)
5,494 answers provided
Replied on November 26, 2011

The injector operates fine on all other cylinders when connected to their plugs, its only when I connect it to cylinder 2# the pulse gets week to only that injector.

Tiny Response from 98 rodeo
1 question asked

Replied on November 26, 2011

The fault may be in the injector loom plug it self, check for loose fitting pins, i have seen this on Rodeo's before, and ensure that the plug is locking onto the injector fully.

Tiny Answered by mhpautos (expert)
26,900 answers provided