Idiling Problem Solved

[frankyboy]

think i have found out why the car is idling funny missing bolt on the ICV

so now think its the starter thats going on it anybody know how to check to see if the starter is gubbed

it turns over for about 3-5 seconds before it actually fires up

[jae]

is it a classic, as mine is a bit slow, but I need a new battery, it's pretty gubbed

[Big 'D']

How many bolts are there on your IACV?

There should be 3.

Poor starting could be down to a partial blockage in the fuel system or a weak spark due to incorrect gaps or worn electrodes etc

If a classic it will worth looking to see if there are any fault codes stored, have a look in the 'How to' thread in the 'Tech section' for instructions on how to do this. It

Cheers Iain

[arch]

There should be 4 bolts holding the ICV to the inlet manifold.

If you can get a meter across the battery see what the voltage drops to when starting, if it dips below 10v your battery is gubbed then at least you can rule that out.

Edited May 24, 2010 by Arch

[frankyboy]

well there is 3 (i thought there was meant to be 4)

checked for a code and it was flashing constant so was telling me there was no fault

i checked the plugs but they all seemed fine only put them in april

think im gonna change the fuel filter see if that makes a difference any intruction on how to change this

Edited May 24, 2010 by frankyboy

[arch]

well there is 3 (i thought there was meant to be 4)

checked for a code and it was flashing constant so was telling me there was no fault

i checked the plugs but they all seemed fine only put them in april

think im gonna change the fuel filter see if that makes a difference any intruction on how to change this

What years you car

[Big 'D']

What years you car

Ok I should have said that if its a V3 or V4 97-98 Impreza there will only be 3 bolts but there are 4 holes on the IACV

I am not sure but the older cars may have 4 bolts?

Cheers Iain

[Big 'D']

Looking at the manual the pre 97 (pre facelift) Impreza IACV has 4 bolts, the 97 - 98 defo only has 3.

Cheers Iain

[arch]

Ok I should have said that if its a V3 or V4 97-98 Impreza there will only be 3 bolts but there are 4 holes on the IACV

I am not sure but the older cars may have 4 bolts?

Cheers Iain

Ian thats the confusion, phase 1 and 1.5 manifolds have 4 bolt ICV's they changed on the phase 2 cars. But that said if there isnt a hole to screw in a 4th bolt then it must be correct

[frankyboy]

Ok I should have said that if its a V3 or V4 97-98 Impreza there will only be 3 bolts but there are 4 holes on the IACV

I am not sure but the older cars may have 4 bolts?

Cheers Iain

its a 1997 R reg wagon

gonna try get a meter for the battery see if that shows anything

[arch]

Dont you just love Subaru, different versions, different pahses and parts differences between them all - nice

[Big 'D']

Ian thats the confusion, phase 1 and 1.5 manifolds have 4 bolt ICV's they changed on the phase 2 cars. But that said if there isnt a hole to screw in a 4th bolt then it must be correct

Phase 1 has 4 bolts, phase 1.5 has 3 and the IACV was moved to the throttle body on the phase 2.

The 97 Impreza defo only has 3 bolts holding the IACV on, there are 4 holes on the IACV but only 3 tappings in the intake manifold.

Cheers Iain

[frankyboy]

Phase 1 has 4 bolts, phase 1.5 has 3 and the IACV was moved to the throttle body on the phase 2.

The 97 Impreza defo only has 3 bolts holding the IACV on, there are 4 holes on the IACV but only 3 tappings in the intake manifold.

Cheers Iain

yeah your spot on

glad somebody knows my car

[Big 'D']

yeah your spot on

glad somebody knows my car

I have the same engine layout as yours on My V3 (97) Sti

Cheers Iain

[Big 'D']

Are you running an atmospheric DV?

Also what plugs did you fit PFR6B or PFR7B? If you fitted the 7s did you gap them at all?

Cheers Iain

[arch]

Ian you are correct the phase 1.5 manifold has 3 bolt holes but the ICV itself has 4 bolt holes of which the bottom left is not used on the phase 1.5 manifold. The phase 1 and 1.5 ICV's are interchangeable the only difference is the angle of the pipe.

[frankyboy]

Are you running an atmospheric DV?

Also what plugs did you fit PFR6B or PFR7B? If you fitted the 7s did you gap them at all?

Cheers Iain

it was 6s that was put in and never gaped them

[Big 'D']

Thats fine, do you have an atmospheric DV fitted?

Cheers Iain

[frankyboy]

Thats fine, do you have an atmospheric DV fitted?

Cheers Iain

dont know what atmospheric means but yeah got a DV fitted

[hi_jac]

The icv has 4 bolt holes on Franks car and only 3 bolts. As said a new gasket and 4 bolts, put the standard air box back on and clean the maf and take it from there. PM me and let me know how you get on. Good luck.

[frankyboy]

The icv has 4 bolt holes on Franks car and only 3 bolts. As said a new gasket and 4 bolts, put the standard air box back on and clean the maf and take it from there. PM me and let me know how you get on. Good luck.

put the standard box back on seems to run a little high when starting her up then goes back down to about 8000 where it sits quite stable just now

thanks again mate for the hand today

[hi_jac]

Np only happy to help, now get that icv 4th bolt in pronto

[Big 'D']

Np only happy to help, now get that icv 4th bolt in pronto

Well if its a Phase 1.5 V3 (MY97) Impreza please let me know how you get on fitting the 4th bolt as there is NO tapping in the manifold for it

Cheers Iain

[Guest sti3_lewak]

I would agrea with Big D... I have had my IACV off many times and it only has 3bolts. holding it on there is a 4th hole on IACV but not tapping on the intake manilfold. I have a 1997 STI Ver 3.

Looked at my mates 1998 and his is the same again

[frankyboy]

somebody has said it could be the head gasket

this person is not really reliable but just thought i would ask

not loosing fluid power or oil no smokey exhaust