![]() |
|
Welcome to the Australian Ford Forums forum. You are currently viewing our boards as a guest which gives you limited access to view most discussions and inserts advertising. By joining our free community you will have access to post topics, communicate privately with other members, respond to polls, upload content and access many other special features without post based advertising banners. Registration is simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact us. Please Note: All new registrations go through a manual approval queue to keep spammers out. This is checked twice each day so there will be a delay before your registration is activated. |
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 | ||
Starter Motor
Join Date: Mar 2013
Posts: 10
|
hey all my old mans got a 99 WF festiva 1.5L manual and it has a idle problem.
about a week ago we parked the car up for the night went back to it the next day and it wouldn't start. we ended up putting a new coil, leads, plugs, dizzy cap and rotor button on it and it came back to life but then had the idle problem. when its cold it idles up and run but has a slight misfire once it warms up the idle fluxes up and down until it stall out so we replaced the crank angle sensor in the dizzy thinking it could be that but no change not going to throw any more money at it hoping it will fix it so can any one point me in the right direction or give me ideas what it could be ? or common faults with them thanks in advance all ![]() |
||
![]() |
![]() ![]() |
![]() |
#2 | ||
Chairman & Administrator
![]() ![]() Join Date: Dec 2004
Location: 1975
Posts: 107,018
|
I'll have a look through the WSM tonight but it sounds like a sensor of some sort or it is sucking in air somewhere in the intake side.
Cheers Russ
__________________
Observatio Facta Rotae
|
||
![]() |
![]() ![]() |
This user likes this post: |
![]() |
#4 | ||
Chairman & Administrator
![]() ![]() Join Date: Dec 2004
Location: 1975
Posts: 107,018
|
It's a relatively simple system of electronic engine controls as per the diagram below:
![]() Likewise, the vacuum hose layout is straightforward - the resistances are marked on the various solenoids: ![]() I'm going to include the likely causes for rough idle or engine stalls after warm-up as it more closely matches the symptoms you described. 1. Idle air-speed control system malfunction 2. A/F mixture too lean (air leak, low fuel pressure, PCV valve stuck open) 3. A/F mixture too rich (coolant temp correction - thermosensor) 4. Incorrect ignition timing. Most of these require a diagnostic tester to check but you can check some of them manually. The water thermosensor can be checked easily by disconnecting it to see if the warm idle improves. Specs wise: Fuel system pressure should be 34-40 PSI and it can be measured with an in-line gauge after the fuel filter. Timing 16 deg BTDC +/- 1 deg Cheers Russ
__________________
Observatio Facta Rotae
Last edited by russellw; 22-06-2017 at 09:31 AM. |
||
![]() |
![]() ![]() |
![]() |
#5 | ||||
Starter Motor
Join Date: Nov 2010
Posts: 2
|
Quote:
Quote:
|
||||
![]() |
![]() ![]() |
![]() |
#6 | ||
Starter Motor
Join Date: Jan 2015
Posts: 4
|
Hey aaron001au did you sort the issue out with the festiva?
|
||
![]() |
![]() ![]() |