Slow, sluggish and jerky performance

[kbhagvan]

Hi All,

Its been a long time since i've posted here so be gentle!

I have a 2003 2.4 CL7 which has been looked after since i bought it, oil service every 4K miles, all original Honda Parts, etc. i have recently noticed that its really sluggish and when the AC is on, its even worse, it feels like i have lost 100BHP!

So as per usual, i have given her an oil service, cleaned the butterfly and intake manifold, changed the fuel filter for with a Honda one..

What else would you recommend i do or check?

 

[F6HAD]

Plugs and coil packs

 

[kbhagvan]

Plugs and coil packs

its had new sparks a month ago and new coil packs since Feb this year. are there any other valves that would need cleaning?

 

[jayok]

its had new sparks a month ago and new coil packs since Feb this year. are there any other valves that would need cleaning?

Some things:

1. Alternator - is its output ok?
2. Fuel pump - all ok?
3. MAP/IAT sensors - are they in spec?
4. DBW? All ok?
5. Air filter ok?

Does it idle rough? Or only during drive?

Now you mention that when the A/C kicks in, the engine really struggles. The A/C puts extra load on the engine, so it's normal that the engine will need to adjust but it by no means struggles.

 

[F6HAD]

Have you investigated a possible blocked cat? the K series don't normally develop faulty sensors, but if it's had cheap fuel in or just doing a lot of local miles, you could have developed a cat problem.

What is the mileage on the car?

 

[kbhagvan]

Have you investigated a possible blocked cat? the K series don't normally develop faulty sensors, but if it's had cheap fuel in or just doing a lot of local miles, you could have developed a cat problem.

What is the mileage on the car?

Fahad - Cat has been checked and is fine, has also had a treatment of Cataclean and have never had cheap fuel in the car, always Shell and i normally do 60 is motorway miles daily...

Jayok - I will check those and post results back...

Have also noticed that the car feels like the brakes have been applied everytime i take my foot off the acc pedal, i have check all four brakes and that doesnt see to be causing the car to slow down....

 

[F6HAD]

That was my next thing, check for binding brakes..

 

[vile]

Try cleaning your MAF sensor but only use the correct spray like in the link.

http://www.ebay.co.uk/itm/CRC-AIR-SENSOR-CLEAN-MASS-AIR-FLOW-METER-CLEANER-MAF-200ml-/121127190586?pt=UK_Car_Accessories_Car_Care_Cleaning&hash=item1c33be403a