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G13bb idle problems

Tech Talk for Suzuki owners.

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G13bb idle problems

Post by Abaris »

I've finally got around to finishing my G13bb engine conversion (into my '91 Sierra). It starts!

Now the problem is that the engine is reving too high at idle, as though the choke is always on. Anyone got any advise to offer? Is it possible that I'm missing a sensor (feed back loop)?

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Post by ljxtreem »

Vacume leak :?:

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Post by Abaris »

very very possible - I wasnt sure about a few things there. I'll look into it.
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Post by Pep »

Timing :?:
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Post by Spike_Sierra »

Pep wrote:Timing :?:
its efi so its all controlled by the ecu...isnt it?

i would look for vacuum leaks. is the IAC hooked up correctly? clean the plug.
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Post by lay80n »

Spike_Sierra wrote:
Pep wrote:Timing :?:
its efi so its all controlled by the ecu...isnt it?

i would look for vacuum leaks. is the IAC hooked up correctly? clean the plug.

But base timing is still set manually. Check all vacum lines etc, and make sure that your electrics are all good. Check coolant temp sensor incase choke is staying one due to faulty sensor reading cold start all the time.


Layto....
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Pep
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Post by Pep »

lay80n wrote:
Spike_Sierra wrote:
Pep wrote:Timing :?:
its efi so its all controlled by the ecu...isnt it?

i would look for vacuum leaks. is the IAC hooked up correctly? clean the plug.

But base timing is still set manually. Check all vacum lines etc, and make sure that your electrics are all good. Check coolant temp sensor incase choke is staying one due to faulty sensor reading cold start all the time.


Layto....
Just wouldn't hurt to check if you can get your hands on a timing light,
that why mine was idling a little high,
altho mines only a carbied 13b but the theory is still the same
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Post by Abaris »

Thanks for the ideas.

To clarify: when the engine is rev'd, it returns to an idling speed, but immediately speeds back up to what sounds like about 2500 rpm (very approximate as there is no tacho yet).
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Post by Spike_Sierra »

offtopic: when you can work out how to run a tacho let me know....
85 LWB w. FRP Canopy
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Post by jtraf »

To get the tacho working you will need to get hold of a jimny cluster and retro fit the tacho from there. The sierra tacho is different and from what I have found you will not be able to get it going of the jimny ecu.
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Post by Spike_Sierra »

im probable not the best at retro fitting anything, and ive got a drover dash so no tacho, is there a way to fit an aftermarket one, as normal aftermarket ones dont work, is there a special type.

sorry for hijack. :oops:
85 LWB w. FRP Canopy
Ca18det conversion in progress, Vit PS, RUF,
6.5:1's, 33x12.5 Bfg's, custom front and rear bars.
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