high idle problem

mikeae91 · Street 2NR Joined: 30 Apr 2009 Tech posts: 57 My 2NRide:

ever since i pput in the engine it iidles high like 1100 -1400

after cleaning throttles, iscv changed plugs cleaned injectors it idling 1400
car is pulling gr88 but idling to high

ii cud get it down to a 1000 but that wuud mean retarding distributor all the way down and turning the afm screw all the way up it will idle at 1000 but it would be rough

any ideas i also adjusted the iscv to lower the idlle but it still to high..

my car doesn't have a checklight well i don't even know if the guy wired in the part to diagnostic check..

hhelp guys ii aslso checked all vacuum lines and they seem to be good..

another thing i also changed head and block and after installing it still idle high. so im thinking its either an electrical problem or tps because the new head and block came wiith sensors

Terran · Posted: Sun Jul 05, 2009 7:38 pm Post subject:

Wait... at 1000rpm, the idle is rough??

Check your engine mounts.

Is this "roughness" consistent, regardless of the idle speed?

praise · Posted: Sun Jul 05, 2009 9:36 pm Post subject:

What engine are you speaking about? I believe that it is idling too high because of vacuum leak on the intake side of the manifold. Did you replace the trottle body gaskit and intake manifold gaskit? It could also be sucking in air around the injector rubber in the intake manifold. Check the rubber to see if they are crack, damage or not seating properly. Also check the position of the TP sensor and the output voltage at idle as this can also cause high idling.

Terran · Posted: Sun Jul 05, 2009 9:42 pm Post subject:

It's a 4AGE 20V.

mikeae91 · Street 2NR Joined: 30 Apr 2009 Tech posts: 57 My 2NRide:

4age 20v i don't believe its the intake manifold gasket because i never took that out the new head and block came with intake and exhaust..

praise · Posted: Mon Jul 06, 2009 6:50 am Post subject:

Get the DLC connected and then it would be easy picking to get a scan to know exactly whats going on with them sensors. Otherwise you wil have to get a volt meter and peel the wires on the TP sensor to measure the output. But also check the injector rubbers on the intake manifold to make sure air is not being suck in. I found this happening in a few rollas that cause them to idle high.

mikeae91 · Street 2NR Joined: 30 Apr 2009 Tech posts: 57 My 2NRide:

ok i'll check them when i reach home later. and who can i check to wire in the dlc and check back wiring

praise · Posted: Mon Jul 06, 2009 9:24 am Post subject:

Sham 7409944

mikeae91 · Street 2NR Joined: 30 Apr 2009 Tech posts: 57 My 2NRide:

hey guys i changed the iscv valve today and same problem but i think its the air flow meter freaking up because if i disconnect the jacks from it the idle drops and idles at 700 but when i connect it\, it goes back sky high anyone have a afm i can try to see if its my problem.

corollalover101 · Posted: Mon Jul 06, 2009 8:48 pm Post subject:

mikeae91, where are you located? I have a spare AFM

mikeae91 · Street 2NR Joined: 30 Apr 2009 Tech posts: 57 My 2NRide:

i'm located in chaguanas or work at grand bazzar or by my girl by price smart area my number is 7247707 call me and leh me know when you could pass through or where to meet you this would be gr8ly appreciated..

dmitc · Posted: Tue Jul 07, 2009 9:26 am Post subject:

Zeriam · Posted: Tue Jul 07, 2009 10:26 am Post subject:

i current have a high ldle issue buts ecu related, a capacitor has to be changed.

praise · Posted: Tue Jul 07, 2009 1:49 pm Post subject:

If you disconnect your AFM your idle will drop. The ECU would not know how much air is entering the engine and cut back on fuel supply. Try a ECU swap instead.

mikeae91 · Street 2NR Joined: 30 Apr 2009 Tech posts: 57 My 2NRide:

who has a st ecu mt that i can try then