cool start problems

blevesque@shaw.ca · Post by **blevesque@shaw.ca** » Sun Dec 23, 2012 12:30 pm

There's so much information and opinion regarding cold start problems that I hesitate to throw anything else onto the fire but...

My 96 L400 starts perfectly in cold weather (say anything below minus 8 degrees) and warm weather (anything above 12 degrees) but not in between. While it always starts instantly, within that cool temperature range it sputters and stalls within 5 - 10 seconds. It usually takes 2 more starts to get it idling smoothly, then it runs perfectly. Any suggestions?

Dino · Post by **Dino** » Sun Dec 23, 2012 4:11 pm

Sounds a lot like the injector pump front seal is leaking. Is there any smoke when it does start?

blevesque@shaw.ca · Post by **blevesque@shaw.ca** » Sun Dec 23, 2012 7:48 pm

No smoke. IP seal replaced at purchase 30,000km ago. If that's the cause why does it start so well at very cold temps?

Firesong · Post by **Firesong** » Mon Dec 24, 2012 8:17 pm

Is it possible your sensor is off? When its warm its not a biggie. When its cold the sensor works. In between its iffy and doesnt give the proper response for the glow plugs / relay. It shouldn't be expensive to get a new sensor.

Worth a try

blevesque@shaw.ca · Post by **blevesque@shaw.ca** » Mon Dec 24, 2012 10:06 pm

Thanks for the suggestion. Sounds appropriate, but what sensor?

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