mine had the same symptoms last year. car lost power and sounded like it was running on 3 cylinders at some times. It started after having a B service from one of the stealer, first I thought that they may have changed the timing but I don't think that they ever touch this thing as part of the service. I had this feeling but not 100% sure that they may have swapped my MAF with a faulty one because I only felt this power loss the moment I drove the car after that service. problem gone worst till one morning after starting it up, loud popping sound was coming from the engine for few seconds and stopped when the engine was hot. took the car to the garage, the mechanic had a used MAF so he swapped it with my one then test drove the car. car was running sweet after the swap. purchased a new MAF and cost me nearly £400 incl. labour and vat. car was under warranty so didn't mind the cost. Car is a C180 with 55k miles on that time. It went in for an A service last week so had to make sure that my nearly new MAF stays so I etched my initials on it. I also put a cellotape on parts that they will change just to make sure that if it break open that means that they've done their job. Just be careful with your MAF everytime you hand-in your car to a garage as it only takes minutes to change it with a faulty one.
quoman
Banned
if its missing on two you MAY find the coil has blown that side of the ecu
IF it has get in touch i can repair hfm and pms ecus
a class suffer with air flows and can be repaired for about £300 unlike other mercs they are part of the ecu and no sold seperatly also they are coded to the car so please dont bother with "used"
IF it has get in touch i can repair hfm and pms ecus
a class suffer with air flows and can be repaired for about £300 unlike other mercs they are part of the ecu and no sold seperatly also they are coded to the car so please dont bother with "used"
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C36 misfire
Hiya, though I'd add my two peneth. My C36 has been displaying the same problems as all of your's.
After high speed overtakes or periods of enthusiastic driving, my car goes into limp mode, low power uneven running etc.
Took it to MB they quoted mucho dinero, I know a guy, a reliable auto diagnostic man. He eventually tracked it down to a coil pack breaking down, he replaced this, and thought that cured it, almost..... I drove it fairly hard and it came back, not as pronounced but still there, I've just changed the other two coil packs, and its still there, next task, change the HT leads and probably the spark plugs too! more money!
Hope this cures it, I'll post when I find out.
Hiya, though I'd add my two peneth. My C36 has been displaying the same problems as all of your's.
After high speed overtakes or periods of enthusiastic driving, my car goes into limp mode, low power uneven running etc.
Took it to MB they quoted mucho dinero, I know a guy, a reliable auto diagnostic man. He eventually tracked it down to a coil pack breaking down, he replaced this, and thought that cured it, almost..... I drove it fairly hard and it came back, not as pronounced but still there, I've just changed the other two coil packs, and its still there, next task, change the HT leads and probably the spark plugs too! more money!
Hope this cures it, I'll post when I find out.
DuFFmAn said:Currently, my problems not getting anyworse to be honest so im currently driving it as it is... Can't be bothered to be honest.... Fed up of it..
Have you tried changing the MAF. If it's only gonna cost you £60, I think it's worth buying. I paid £230 just for the MAF alone. Looks like you've got the same problem I've had on mine.
My advice is, phone the dealer if they've got a MAF available in stock for your car. If they have, buy it then fit it. If problem solved, return the MAF to the dealer, they only charge few % of the amount for returned items. Now, buy the cheap MAF.
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Anyone know what would happen if ive put in the wrong spark plugs??
Reason I ask is that when I ordered mine, the guy asked me whether my car was the facelift sport edition (P reg)... At the time I didnt have a clue but the guy based on the description of the existing spark plugs (over the phone) concluded that it WAS the facelift version... Later i sent my brother over with the existing spark plugs and he returned with a new set being the same type...
I reckon, my Spark plugs might be the wrong type as they worked for a few days without any problems after changing them
... Surely if it was the MAS or the coilpack, the problem would still be there immediately after the sparks were changed ...
Anyone know the symtoms of wrong sparkplugs.. im going to find out for sure tomorow to see if i have the right sparks...
Reason I ask is that when I ordered mine, the guy asked me whether my car was the facelift sport edition (P reg)... At the time I didnt have a clue but the guy based on the description of the existing spark plugs (over the phone) concluded that it WAS the facelift version... Later i sent my brother over with the existing spark plugs and he returned with a new set being the same type...
I reckon, my Spark plugs might be the wrong type as they worked for a few days without any problems after changing them
... Surely if it was the MAS or the coilpack, the problem would still be there immediately after the sparks were changed ...Anyone know the symtoms of wrong sparkplugs.. im going to find out for sure tomorow to see if i have the right sparks...
grober
MB Master
You havnt said what plugs you have got in there at the moment which might help. The spark plug manufacturers all have web sites with applications lists or "chooser"programmes. Put in your make model age of car and it indicates the correct spark plug. Apart from the obvious physical differences of reach and electrode design probably the most important characteristic of plug suitability is its "heat range" Most modern plugs have a wide heat range tollerance and will work well under a variety of conditions. For a misfire to occur I would guess the plugs would have to be running too cold and fouling up. The wrong plugs can cause long term damage especially when the engine is used hard so best check them out.
My car was fitted with NGK plugs with 2 electrodes then changed it myself by NGK with 3 electrodes last year. It went in for a service last week and dealer fitted new plugs (£1.80 each) don't know what brand but definitely cheap ones. Never notice difference in performance on running 3 different types of plugs. I think as long as they spark when they need to, it's fine.
Glenn Smith
Active Member
- Joined
- Mar 7, 2006
- Messages
- 369
- Car
- 2000 c230k estate
The misfire sounds like an ignition coil, generaly speeking I would say my merc, from a engine point of view, is very good, we've done 30k in it, and it already had 110k when I bought it, still burns no oil, uses no water and have had no probs except a front oil seal, however the air con packed up, needed a new condensor, as it happens I have the gear and know how to do myself, not much I hear you say but still more faults than a similar age and mileage peugeot 406, will I buy another? no! and why? not because of the faults above but because of the RUST, warranty or no warranty I don't want it on a six year old car whatever the make. Is a real shame cos I like the car especially the supercharged engine.
1001graham
New Member
- Joined
- Jul 15, 2006
- Messages
- 2
Had a misfire problem and just changed the MAS. What a difference!! Not only cleared the misfire but much much more responsive - seems like a different car. Got mine from http://www.airflowmeters.co.uk for £92+ VAT including free next day delivery.
Dieselman
Banned
- Joined
- Jul 13, 2003
- Messages
- 34,198
- Car
- Peugeot 403 Convertible
1001graham said:
Just had a look at some sample prices, very good indeed, especially as they are new stock with three year warrany.
