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Old 10-09-2019   #46
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Re: Cold start problem at first start

Nope, i dont solve.

Now i have 2 new map senzor BOSCH, one is identical (serial) with the old map from car , and another say is OEM map senzor for fiat 500, but have athor codes of them.
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Old 17-09-2019   #47
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Re: Cold start problem at first start

The problem persist, dont know what to do more.
At the fiat service say is no update for my engine.



New parts install:
-fuel injectors
-coolant sensor
-crank shaft sensor
-oil sensor
-map sensor
-fuel pump

Test used parts:
-purge valve ,not new but ok
-throttle body, not new but ok
-intake manifold

I put from fuel pump a pipe up front to the fuel rail, nothing change.
I dismantled the ECU and i check the conection of all pins,nothing.
I do a test , when i try first time to start i help the engine with starting fluid spray, and slowly slowly she start at the first time.
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Old 27-09-2019   #48
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Re: Cold start problem at first start

I put another new map, and a new intake manifold.
The same problem.

I found another 2 pers, with this problem.
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Old 27-09-2019   #49
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Re: Cold start problem at first start

So is the issue a too lean mixture at first start attempt ?
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Old 27-09-2019   #50
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Re: Cold start problem at first start

Yes because:

-start ok with startspray
-start ok with frezze map sensor and hack the ECU

But at the office fiat i dont find the solve, and i find new guys with this problem and same engine.
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Old 27-10-2019   #51
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Re: Cold start problem at first start

HY again,

Nothing solve!!

Did someone have the original ecu file ?
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Old 28-10-2019   #52
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Re: Cold start problem at first start

I ask a 1.4 owner but without no problems at starting in cold weather, to take a picture at the ecu, locate next to the car battery.

Just have to open the hood ,and loock at the batery side.A picture for us can mean solving the problem, so please help us.
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Old 13-11-2019   #53
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Re: Cold start problem at first start

I put with K-tag a custom ecu map, and put new gasoline but 99 , now i have 3 days with start ok.

Keep info
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Old 15-11-2019   #54
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Re: Cold start problem at first start

My first cold spell since I got my 500 gucci .... this morning it took 3 attempts to start my car 🤮 I was actually starting to worry Iíve ordered new iridium spark plugs.... just hope this sorts it
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Old 12-12-2019   #55
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Re: Cold start problem at first start

Hy, news, the car start all time ok from the last post when i remap.
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