MAP sensor readings at idle
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St. Jude Donor '08
MAP sensor readings at idle
reading between 65-75 Kpa, is this normal, do i have a vaccuum leak? car is runing extremely rich at idle.
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From: Portland Oregon
Originally Posted by vetteman9368
reading between 65-75 Kpa, is this normal, do i have a vaccuum leak? car is runing extremely rich at idle.
A stock engine will have a MAP Value of around 35 to 45 kPA @ idle, a cammed up car with a 224 to 230 intake duration cam will idle at around 45 to 50 kPA.
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St. Jude Donor '08
well i do have a GTP-6 in a 383 but i will check the little rubber seal under teh map sensor
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St. Jude Donor '08
can't find a vaccuum leak, still 65-75Kpa . getting a QDM fault on 1 and 3, 2 is OK. what should i check next.
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St. Jude Donor '08
Originally Posted by tjwong
What is the spec of that cam?
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From: Portland Oregon
Originally Posted by vetteman9368
.570/.580 232/236 114lsa
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Le Mans Master
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From: Portland Oregon
Originally Posted by vetteman9368
then i'm sure i have a vaccuum leak somewhere, but hell if i can find it
Dumb question but have you had a custom chip done for the car? If the idle speed isn't raised and if the VE maps are not tuned for the cam that too can cause this problem.
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St. Jude Donor '08
Originally Posted by tjwong
Dumb question but have you had a custom chip done for the car? If the idle speed isn't raised and if the VE maps are not tuned for the cam that too can cause this problem.
Melting Slicks
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From: Milan
I was ready to ask which level of map (kpa) would be a stock L98 at idle with stock cam... and I see this post...
My recent short datalog says that at idle I have from 33 kpa to 36kpa with the shifter in D at 675 / 700 rpm.
With the shifter in N or P at 775 / 800 rpm the value decrease to about 25kpa 26 kpa.
Are these value good/normal for a SD car basically stock with stock cam?
Thanks
-Beppe-
My recent short datalog says that at idle I have from 33 kpa to 36kpa with the shifter in D at 675 / 700 rpm.
With the shifter in N or P at 775 / 800 rpm the value decrease to about 25kpa 26 kpa.
Are these value good/normal for a SD car basically stock with stock cam?
Thanks
-Beppe-
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St. Jude Donor '08
hell anything is possible? it still works, but could it just not be right. i was also told by Ed Wright's crew to readjust teh valves, as one may be a lil too tight
