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thoughts regarding lumpy start

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Old 12-01-2008, 12:10 PM
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Default thoughts regarding lumpy start

During this cold weather my car is having real trouble starting - it often wont start on the first 7 second push, it pops and turns over, it will start on the second push, once started it continues to pop and feel lethargic and is very chug chug under 4k until the water temp has hit 2 /3 bars. I dont go beyond 4 -5 for the first 10 - 15 mins so i dont know what its like higher in the rev range.
Once warm its fine. during the summer months and milder morning recently its been fine.

Anyone have any ideas / experience ?

Car is running CTSC and AEM
Old 12-01-2008, 12:37 PM
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Take the intake sensor out and clean it

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Old 12-01-2008, 12:50 PM
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A lot of people report difficulty cold starting on the AEM , myself included. Sometimes takes a good few seconds of cranking before it fires up on very cold mornings.
Old 12-01-2008, 12:58 PM
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Mine has an AEM and has trouble too - took 2 goes this morning

Hold it at 2k for 30 secs after you first press the red button - usually works
Old 12-01-2008, 01:04 PM
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I don't have any problems starting but I have noticed the car running lean until it warms up.

I can remember Mase telling me not to turn the key and immediately press the start button. I always wait until after my AEM gauges sort themselves out.

Old 12-01-2008, 01:07 PM
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Faulty MAP sensor? Spark plug change due?

I have a fujita V5 which is very similar to the AEM, and never have any problems starting her on cold mornings.

Im afraid its a case of process of elimination
Old 12-01-2008, 01:07 PM
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warm up enrichment needs adjustment, I'll be over soon, please contact me for those who need tweaking.
Old 12-01-2008, 01:18 PM
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Originally Posted by mase1,Dec 1 2008, 10:07 PM
warm up enrichment needs adjustment, I'll be over soon, please contact me for those who need tweaking.
Old 12-01-2008, 01:21 PM
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What AEM is it, there are known problems with the 1012 which have been resolved in the 1052, however it could be down to the tune.
Old 12-01-2008, 08:57 PM
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Originally Posted by eSeM,Dec 1 2008, 10:04 PM
I don't have any problems starting but I have noticed the car running lean until it warms up.

I can remember Mase telling me not to turn the key and immediately press the start button. I always wait until after my AEM gauges sort themselves out.

Prob just no signal from the lambda until it heats up / springs into life.


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