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View Full Version : car hessitates when cold!!!!!!



tunerb5
10-10-2006, 06:08 PM
Basically when I start the car in cold weather, and drive it.....it hessitates, bogs, jumps.....w/e you call it. It all stops when the engine warms up. When Its warm out, the car runs just fine.

The car is a 99.5 nDBW, also I am not throwing any codes.

Mods: PC16 with just about every bolt on....TP, DP, Exhaust, Pulleys, Intake, 310cc injectors, Adjustible FPR set at 2.7 bar, FMIC....etc.

What could this be? Coolant temp sensor? Im lost....

Neo1130
10-10-2006, 06:39 PM
Sounds coolant temp sensor related...

Quattrocket
10-10-2006, 07:10 PM
hmmm, sounds like my problem. coolant temp sensor eh? I'll have to try that.

Jason84
10-10-2006, 08:00 PM
all turbo cars usually do that from my experinces.. mine does to but you cant really expect to floor it 2 seconds after startup in cold weather on turbo cars i usually let it warm up for about 10-15 minutes before i get on it at all.

SoleMate
10-10-2006, 08:27 PM
That's it! coolant sensor..

ceas
10-10-2006, 08:37 PM
lol allllllll my answers have been getting answered lately! its great!!

busted n75 valve, turbo inlet hose making noise, and now this

Neo1130
10-11-2006, 03:43 AM
Originally posted by ceas
lol allllllll my answers have been getting answered lately! its great!!

busted n75 valve, turbo inlet hose making noise, and now this


Hahaha, glad you are the part of the lucky majority... I on the other hand usually ask questions that no one could answer....

marcini
10-11-2006, 05:01 AM
I dont believe that this is realated to a coolant sensor, not at cold startups. At cold start ups ecu get the temp reading from the Intake temp sensor, while the car is warm that's when the ecu retrieves the temp reading from the coolant sensor.

I would try adding or subtracting some fuel if you can, but not too much, too bad your not dbw, u could use the lemminwinks.

tunerb5
10-11-2006, 10:40 AM
Originally posted by marcini
I dont believe that this is realated to a coolant sensor, not at cold startups. At cold start ups ecu get the temp reading from the Intake temp sensor, while the car is warm that's when the ecu retrieves the temp reading from the coolant sensor.

I would try adding or subtracting some fuel if you can, but not too much, too bad your not dbw, u could use the lemminwinks.

well when its warm out th car starts fine and runs great after the FPR was adjusted to 2.7bar.

when its cold on the other hand it starts fine, but when you drive it, it hessitates, kinda chokes if youre easy on the pedal untill the coolant temps go up.

CaSp3r9
10-11-2006, 10:43 AM
Originally posted by Neo1130
Hahaha, glad you are the part of the lucky majority... I on the other hand usually ask questions that no one could answer....


Lies. Mike Hood knows all. [hail]

BranCKY3
10-11-2006, 10:49 AM
I have the exact same problem, I think it's just super rich and causing it to stutter.

Poopie
10-11-2006, 10:49 AM
are your warming the car up before you drive? or are you starting up in 50 degree weather and driving off?

tunerb5
10-11-2006, 11:06 AM
Originally posted by Poopie
are your warming the car up before you drive? or are you starting up in 50 degree weather and driving off?

I warm it up for a min or two......but If I dont and I have to drive I never take it over 3k nor do I try to boost untill it warms up.

tunerb5
10-11-2006, 11:07 AM
Originally posted by BranCKY3
I have the exact same problem, I think it's just super rich and causing it to stutter.

why only rich when cold though?

art
10-11-2006, 01:53 PM
let it warm long enough for the rpm to drop below 1000 then go slowly for about a aminute. that helps with my 2.8

tunerb5
10-11-2006, 02:16 PM
Originally posted by art
let it warm long enough for the rpm to drop below 1000 then go slowly for about a aminute. that helps with my 2.8

when I start the car its never over 1k, mayb if its like 30 out it'll be at 1.1

marcini
10-11-2006, 02:47 PM
it's your spark plugs, coils or ignition moudle