Fossy
New Member
- Messages
- 45
Hi All,
Really weird, iv been enjoying the car whenever I get the chance since sorting my last problem of the standard cats blowing up, then replaced them with gutting the primaries, and welding in 2 stainless 200 cell secondaries in place of the big boys.
Been driving occasionally for 3 months at a guess without fault, and suddenly I get a P0421 (bank 1 cat) and P0431 (bank 2 cat) 'warm up catalyst' check engine light ??? Iv checked the cats with my work inspection camera (you know, a bendy wiggly thing that goes through tiny holes with an LED light) and they both look fine.
Has anyone else had this problem, and also starts fine, but once in gear when cold, it runs really bad when pulling away, really stumbling and f4rt1ng, but better when warmed up.
I'm wondering if I have another problem causing this like MAF or re-circulation circuit, but iv checked all the hoses everywhere for leaks, and nothing.
Iv checked all the plugs and leads, they appear fine as when running, I disconnect each one in turn, and get the idle drop, then connect and it clears up ?
Its always run like stubbly since Iv owned it when cold, and even when warm it isn't right, but better.
Iv renewewed both front O2 sensors, and all cats removed (due to them falling appart)and 2 new 200 cell metal ones instead and been ok till now. Car has 42000 miles on clock and full service 7 months ago inc. new plugs etc
NB. to add, the first engine light appeared a week ago after I had been driving down an arterial road at 70 for a while, then took slip lane and waited for the lights to change.
When I pulled away, I pushed the pedal and got a 'pop' in the exhaust front section and immediately the CEL appeared.
I cleared it once home thinking a P0421 (right side) 'warm up catalyst light' appeared because of the pop in the exhaust, but a day later got a P0431 (left side) CEL indicating the other side was suffering too.
Its got to be down to the idle/pullaway aspect as this is when they both appeared.
Really weird, iv been enjoying the car whenever I get the chance since sorting my last problem of the standard cats blowing up, then replaced them with gutting the primaries, and welding in 2 stainless 200 cell secondaries in place of the big boys.
Been driving occasionally for 3 months at a guess without fault, and suddenly I get a P0421 (bank 1 cat) and P0431 (bank 2 cat) 'warm up catalyst' check engine light ??? Iv checked the cats with my work inspection camera (you know, a bendy wiggly thing that goes through tiny holes with an LED light) and they both look fine.
Has anyone else had this problem, and also starts fine, but once in gear when cold, it runs really bad when pulling away, really stumbling and f4rt1ng, but better when warmed up.
I'm wondering if I have another problem causing this like MAF or re-circulation circuit, but iv checked all the hoses everywhere for leaks, and nothing.
Iv checked all the plugs and leads, they appear fine as when running, I disconnect each one in turn, and get the idle drop, then connect and it clears up ?
Its always run like stubbly since Iv owned it when cold, and even when warm it isn't right, but better.
Iv renewewed both front O2 sensors, and all cats removed (due to them falling appart)and 2 new 200 cell metal ones instead and been ok till now. Car has 42000 miles on clock and full service 7 months ago inc. new plugs etc
NB. to add, the first engine light appeared a week ago after I had been driving down an arterial road at 70 for a while, then took slip lane and waited for the lights to change.
When I pulled away, I pushed the pedal and got a 'pop' in the exhaust front section and immediately the CEL appeared.
I cleared it once home thinking a P0421 (right side) 'warm up catalyst light' appeared because of the pop in the exhaust, but a day later got a P0431 (left side) CEL indicating the other side was suffering too.
Its got to be down to the idle/pullaway aspect as this is when they both appeared.
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Hope all is good with you?
