4age Power Issues

[chrisandliz[RL]]

hiya, I got a second 4age ae82 and it lacks power (my ke70 will keep up). I have looked at both and the only differences I can see are;

• Power steering
  
• Different injectors
  
• Aftermarket fuel filter
  
• Factory exhaust
  

I guess all of these could put add up power lose, but to cut the power in half? The tivs was not working, but I fixed it. (vacuum leak). This made very little differents

 

Stuff that I have not tried;

• Fuel pressure
  
• Timing
  
• Spark plugs
  
• compression
  

Question;

1. Does anyone have any other ideas why it could be so gutless?
   
2. What colour are the standard injector (one has red and the other grey)
   

I am going to service the engine. I was going to do;

• Timing cover seal and cam seals
  
• Timing belt
  
• Injectors
  
• Sparks plugs
  
• And of course oil change and that.
  

hopefully I can find the problem soon, so any advise would be great

 

Thanks

 

Chris

[Trev]

Do the plugs and check the timing then give the throttle body a clean out, Do you know how to run a diagnostic on it?

[chrisandliz[RL]]

Do the plugs and check the timing then give the throttle body a clean out, Do you know how to run a diagnostic on it?

 

Sorry but I'm new at efi and 4age's, if you could give me a run down that would be great

 

I have got the engine manual, but i need to make or get the test equipment

[beerhead]

Check the impedance of your injectors, if they're high ohm 13 + they're hardly going to open because the bigport is designed for 3 ohm injectors. The ecu or an external resister pack drops the voltage on the bigport 4AGES, rather than running high impedance injectors.

[Des]

http://www.rollaclub.com/faq/index.php?tit...eries/Injectors

[LittleRedSpirit]

Compression test?

[chrisandliz[RL]]

my grey (underpower) injectors have 23250-14410 printed on them. but my red ones (normal) have 23250-16010 printed on.

 

so it could be to small injectors, maybe.

[Jono]

your red injectors are GZE injectors.

[towe001]

Had the same thing happen to me some time back.

Putting around town she was fine - except for some rattle from under the car.

But give her a boot while driving and it was like a of time - no pick up, no nothing.

But give her a few good jumps on the go peddle while on the clutch and she'll match the throttle with revs.

 

Which was odd on its own right cause the problem was that the cat had blew its load and jabbed up the exhaust.

 

And before you start asking if i got a little more power after i punched the rest of the cat out

No, no i didn't (seat of the pants dyno that is), but i did make it sound a little more throaty or what ever.

[chrisandliz[RL]]

So my cheap rolla ain't cheap no more, do#h

 

well I'll start at the beginning and work till I find it. I guess it will give a reason to buy some tools

 

I'll have to do the cv joints too.

 

thanks for to help boyz, big shout out to Trev for he help.

 

Chris

[chrisandliz[RL]]

Took the winky for good run today, The engine has magical regained some power, but the cooling system is not working now. Temp got to about 5/8 on the gauge (far to high for a rolla) and the thermo fans did not start. fuse was fine.

 

I did the computer diagnosis trick, but the computer only flashed no fault (single flash, single flash) so i'll move on to sparks as manual says too.

[Trev]

With the ignition on pull the plug off the thermostat housing, The fan should come on.

[towe001]

which is this (circled) plug.

What happens with pulling this plug is that your making the relay turn off (so to speak) and closing the circuit to the fans which in turn should come on.

If that doesn't work then you've most likely

got a stuffed relay

got no power going to the fans

or their not grounded

or the fans are buggered (very unlikely)

[chrisandliz[RL]]

kick'n, I try that tomorrow. if i can't get it to work properly, I was going to pull a dodgy and pull the power of my left head light and wire one to that, so i can take it on the cruise this Sunday.

 

I have a bad case of gremlins with this girl.

[towe001]

Nar, just wire it start to the battery with a relay and switch in between. Won't have to go turning the lights on that way.