au runs terriable when warm/hot

[matty au]

hi guys ,going to work yesterday about 20 mins into the drive and the car starts to lose all power /reluctant to go,i bring it to a standstill and its still idling but just wont rev beyong say 1500 rpm.turn the car off for 5 mins and then i get another 3/4 mins of good driving out of it then starts to play up again,so switch it off and sit for 5 mins and then off i go again for another 3 mins driving,its like something needs to cool down and then its fine for awhile,it heats up and then car runs **** again,what the hell is going on ,would it be a coilpack??????????????????????

[Bushbasher]

I'd say check your fuel filter first.

[falconhell74]

possibly your crank angle sensor

[matty au]

already changed the fuel filter,would a crank angle sensor make it do this?

[rag top]

I initially thought it might be the limp home mode to protect the engine from overheating.

What series is it?

[matty au]

it was built april 99,this is the first time i,ve owned a falcon,i,ve only had the car 2 months it only has 80,000 on the clock,i,ve replaced the leads,whats this limp home mode thingy,cause thats what i had to do just drive it home approx 5 miles just on the idle,as soon as i put my foot on the gas it would miss and run bad

[Logistics]

I have exactly the same problem with my 2001 AU II Forte. Replaced the fuel filter, checked all spark plugs and leads but all good, If I take off ever so lightly it doesn't miss soon as I accelerate a bit harder it starts to splatter and feels like I am running out of fuel keep accelerating even harder it still misses badly but does go.
Any advice would be appreciated before I take it to a butcher mechanic.

[Maka]

Hi all & welcome to AFF, fuel pump, cas or coilpack imo.

cheers, Maka

[matty au]

so if i take the car in to be plugged in and diagnosed will this problem show up ,cause i,ll just buy what i need and fix it myself...............also has anyone relocated there coilpack on there au ,i,m thinking about putting it in top of the manifold for easier acess?????????????

[Maka]

"so if i take the car in to be plugged in and diagnosed will this problem show up"[quote]

Yeah if its electrical it'll show up. Concerning the relocation of the coilpack, i wouldnt bother because of the stuffing around getting leads imo.

cheers, Maka

[Whoosha]

If its a fuel issue it wont show up..... Pull the fuel pump out first and check it,(not a hard job to do your self ) then move on to the coil pack leads ext
http://www.fordforums.com.au/vbporta...?articleid=593

[matty au]

hi just thought i,d update post,i have put a new fuel pump and filter in the car and its going sweet,done about 500k since and no problem,also put the car in for a diagnosis and no problem showed up,..........so i guess it must have been pump!!!!!!!!!!!

[mik]

Thanks for updating mate , just wondering , was tbere much crap in the filter or in the tank, its always interesting to talk symptoms to car mysteries, when you said it started to play up I would have taken a punt on the coil pack breaking down................ and I would have been wrong, , the only other reason I could see the motor running fine at first then gradually failing is debris in the tank slowliy being sucked onto the filter, then when the motor is switched off some of the debri drops off and gives you a bit of good running time again, sound feasible? ??
Just while we are on the subject of fuel systems in au's, I put some fuel system cleaner in my xr6 tank a few weeks ago , my fuel pressure has gone up few psi , it has been running about 42 psi a few years, its now running about 46 psi, so it looks like the stuff actually did something.
Glad to hear your limo is up and running again.

[Kamikaza]

I have just replaced the coilpack and spark plugs, and found the engine is running smoothly in idle (P or N).
However, as soon as I put the gear into D or R, the engine starts to shake, RPM drops to 500 and lots of white smoke coming out of the exhaust pipe.
I also had similar driving issue as Matty Au did, which made me think of failed coilpack and sparkplugs. Does the blocked filter or failing pump make a lot of smoke and loss of power in D or R? Or shall I replace CAS?
I was about to wreck my car but decided to change the coilpack and plugs. Sadly my bet was wrong.

[Maka]

Hi & welcome to AFF, the white smoke is a worry, first check if your headgasket & coolant levels are all good. Pull out your spark plugs to see if any look clean compared to the rest. How many kays on the motor? A worn out cas, fuel pump & dirty fuel filter/ fuel reg will result in a loss of power or non starting motor, all the above will also affect idle quality as will a dirty iac (idle air controller). Have you disconnected the battery lately?

cheers, Maka

[Kamikaza]

Pretty sure there is no head gasket issue. Yes, I jump started the car after putting new coilpack and plugs. I cleaned icv too.

[Kamikaza]

Thanks. Maka.
When I experienced loss of power and eventual stalling, I took the car to a mechanic. He said no firing at 3&4 cylinders and I found it wasn't firing issue at all after putting new plugs and cas. Lots of smoke could be the result of many attempted cranking because of dead battery after 2 weeks of sitting in the garage. Idling is ok in N or P with no obvious smoke but in D or R gear, the engine sputters with smoke. It seems to be burning rich. I was about to sell it to a wrecker but decided to try one more time. Thanks anyway

[Kamikaza]

Sorry. New plugs and coilpack. The cas has been replaced yet

[Kamikaza]

Originally Posted by Logistics

I have exactly the same problem with my 2001 AU II Forte. Replaced the fuel filter, checked all spark plugs and leads but all good, If I take off ever so lightly it doesn't miss soon as I accelerate a bit harder it starts to splatter and feels like I am running out of fuel keep accelerating even harder it still misses badly but does go.
Any advice would be appreciated before I take it to a butcher mechanic.

Have you fixed the problem? What was the cause?