Fuel and cold start running.

Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
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SpamDubz
Posts: 59
Joined: Sun Oct 21, 2012 11:35 pm

Fuel and cold start running.

Post by SpamDubz »

I've got 2 problems with my 2 at the moment, not sure if they are related or not but for one I have pretty bad fuel consumption. Something between 18-20mpg consistently. Worse if I drive hard a lot which is very rare. It's a modded Rev 2 tubby.

Second problem is that when my car is started from cold, it doesn't run right until warm. If I feather the throttle a little it will just hesitate/stutter. It also won't boost when cold (not that I want to do that).

I'm pretty new to mr2's so not sure where to start. I've been living with the problems because they are bearable but the fuel is hurting my wallet rather a lot. I'm using a tank a week as a daily. Any help on these issues would be much appreciated.

Thanks,

Dan.
danjama
Posts: 640
Joined: Tue Sep 18, 2012 9:28 pm

Re: Fuel and cold start running.

Post by danjama »

Watching with interest as I have a similar problem to your second one. I've tried cleaning my iscv and next will be trying coolant temp sensor. Have you checked for fault codes?
SpamDubz
Posts: 59
Joined: Sun Oct 21, 2012 11:35 pm

Re: Fuel and cold start running.

Post by SpamDubz »

Yeah I've checked for codes and nothing comes up. Not really sure what it could be.
mr2magic
Posts: 643
Joined: Fri Apr 09, 2010 9:33 am
Location: Hannover, Germany

Re: Fuel and cold start running.

Post by mr2magic »

I would check the ignition timing as a precaution and then test the O2 sensor.
SpamDubz
Posts: 59
Joined: Sun Oct 21, 2012 11:35 pm

Re: Fuel and cold start running.

Post by SpamDubz »

Okay I'll check those first, thank you !

Dan.
bobhatton
Posts: 3351
Joined: Fri Aug 25, 2006 9:34 pm
Location: Bodmin Cornwall

Re: Fuel and cold start running.

Post by bobhatton »

SpamDubz wrote: It's a modded Rev 2 tubby.


And the mods are?
Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
SpamDubz
Posts: 59
Joined: Sun Oct 21, 2012 11:35 pm

Re: Fuel and cold start running.

Post by SpamDubz »

Mods are:

Ct20b turbo
Triple layered head gasket
Updated water pump
New dizzy cap
New rotor arm
Colder rated spark plugs
TRD leads
HKS FCON ECU
HKS fuel cut defender
HKS dump valve
Berk intercooler (with fan)
Blitz manual engine lid fan
HKS turbo timer
Blitz dual Electronic boost controller.
Aluminium radiator.
Berk downpipe
Modified Japspeed decat exhaust (single pipe)
Polyflex engine mounts
Aftermarket catch can
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