Cold Start Car runs high Rpm never drops

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psycho6cyl

Ponies Are For Lil Girls
Joined
Feb 11, 2005
Messages
1,908
On a cold start the car idles high fo a long time. if i shut off turn back on car idles normal. This car is 100% stock down to chip maf etc. I havent had time to get into car to see what was changed ie chip but i believe it to be orig. I will p[ost my scanmaster #s later to make sure all is well


Tia
 
On a cold start the car idles high fo a long time. if i shut off turn back on car idles normal. This car is 100% stock down to chip maf etc. I havent had time to get into car to see what was changed ie chip but i believe it to be orig. I will p[ost my scanmaster #s later to make sure all is well


Tia


When you check the scanmaster numbers, note the iac during the process.
 
scanmaster #s as follows car warmed up in park
af-05
l8-33
int-139,129.131
bl 150
ats 115
r 800,but was bouncing 625 650
tps 74, but w car off46 i think n 4.76 floored car offf
iac 59
cc214
mal 13,but my eng light only came on once
 
Blm is sky high and tps should be a hundreth higher typically with engine running vs. Key on no start.
I.e.: .46 key on no start and .47-.48 engine running.
So something aint jivin there. Whats fuel psi line off?
 
I just ordered some parts. A fuel pressure guage is one of them. I am running fact reg and i have adj on order. this weekend I will know more when I start a tune up..
 
Try to get those numbers as good as possible before you get a TT chip of any chip by BoB Bailey. Definitely a good stick replacement that fixes alot if idling gremlins.

Sent from my iPhone using Turbo Buick
 
Back in the mid 90's before I knew alot about these cars I adjusted the tps to read over 4.7 at w.o.t. The next morning idled high until put into gear. 0.7 volts tps at idle will definately cause high idle at cold start.
 
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