High Idle (Help)
#1
Driver School Candidate
Thread Starter
High Idle (Help)
I just purchased a 1999 RX 300 front wheel drive and love it.
I wanted to change out the rear coil packs as it had a miss reading on my OBM monitor.
I bought a manul manual and beagn removing the componets to get to the rear coils.
Changed coils and plugs all the around and found three vac leaks and I repaired them with new hose.
Bought a new manifold gasket and began putting it back to together.
Now whn she starts she runs great but I can not get her down below 3,000 RPMs. I even disconnected the throttle linkage and still the same result.
It idled and ran fine before she just had the miss fire on cyc 3.
The only other thing I did was clean the throttle body with throttle body cleaner.
I used to get the misfire code on number 3 before I did the job now I get no codes.
I marked and put everything back were it belonged and have double and triple checked all my connections and vac lines.
Does anyone have any suggestions.
Thanks much,
John
I wanted to change out the rear coil packs as it had a miss reading on my OBM monitor.
I bought a manul manual and beagn removing the componets to get to the rear coils.
Changed coils and plugs all the around and found three vac leaks and I repaired them with new hose.
Bought a new manifold gasket and began putting it back to together.
Now whn she starts she runs great but I can not get her down below 3,000 RPMs. I even disconnected the throttle linkage and still the same result.
It idled and ran fine before she just had the miss fire on cyc 3.
The only other thing I did was clean the throttle body with throttle body cleaner.
I used to get the misfire code on number 3 before I did the job now I get no codes.
I marked and put everything back were it belonged and have double and triple checked all my connections and vac lines.
Does anyone have any suggestions.
Thanks much,
John
#2
Lexus Test Driver
Welcome to Club Lexus! Congratulations on the purchase, you won't regret it!
I suggest looking over for any disconnected vacuum lines for a forth time... lol.
I have a feeling you might have missed a vacuum line, this has happened to me on another car, and it took me damn near 6 tries to finally find the disconnected vacuum line. haha
I suggest looking over for any disconnected vacuum lines for a forth time... lol.
I have a feeling you might have missed a vacuum line, this has happened to me on another car, and it took me damn near 6 tries to finally find the disconnected vacuum line. haha
#3
Moderator
check the IACV, make sure it spins (not stuck) and assembled properly.
Salim
Salim
#4
Driver School Candidate
Thread Starter
Found my problem but have a question
I found one vac line disconnected and the IVAC was carboned up and stuck,
I freed it up with carb and throttle cleaner and it works fine now.
Question is it suppose to spin all tghe way around or does it have stops.
I can turn it freely in both directions with no drag or binding but it only goes so far in either direction and it stops.
Thanks everyone.
John
I freed it up with carb and throttle cleaner and it works fine now.
Question is it suppose to spin all tghe way around or does it have stops.
I can turn it freely in both directions with no drag or binding but it only goes so far in either direction and it stops.
Thanks everyone.
John
#5
Moderator
My bad .. it is supposed to twist and not spin.
Salim
Salim
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