D2 Rough Start, Misfires, O2 Sensors

Reed Perry

Reed Perry

Well-known member
Jun 19, 2005
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City Of Oaks
So recently my 2000 D2 has been running pretty rough. On cold start it cranks pretty slow and at low RPMs. If i give it some gas, it backfires and pops a little bit. I get a strong gas smell and minimal smoke. When I start in 1st gear from a stop, it hesitates and bogs down some until it gets past 1st gear. Once it drops into 4th/overdrive it starts to feel like something is slipping and then catching repeatedly when i press the gas. If i make it kick down a gear it goes away, until it drops back into that gear. On Friday morning's cold start (outside temp not too bad, ~40*) the service engine light started blinking at startup and it ran terrible. It stopped blinking and just stayed lit. Got the codes read, and I have cylinder 2, 4, 6 misfires as well as O2 codes Bank 1, both sensors... The guy couldn't print out the codes and i didn't have time to write the code numbers down so I don't have them..

So what do you guys think? O2 sensors, MAF sensor, Plugs & Wires? Time for Valve Job? :banghead:
 
Reed Perry

Reed Perry

Well-known member
Jun 19, 2005
619
0
City Of Oaks
plugs and wires were done about 6-9K miles ago.. not sure exactly but theyre not like 20K miles old or anything.. I'll check them tomorrow for corrosion or anything out of the ordinary

EDIT: I plan to take it to the shop this week and get it on Test Book or Auto Logic
and see what comes up
 
Mongo

Mongo

Well-known member
Apr 19, 2004
5,731
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o2 sensors codes are from dumping raw fuel into them, as is the flashing SES light for dumping fuel into the cats...check your plugs and wires, then proceed to a compression test on the misfiring cylinders...
 
Reed Perry

Reed Perry

Well-known member
Jun 19, 2005
619
0
City Of Oaks
10-4. thanks mongo, will do..
From my understanding and what ive been told,
the flashing SES light meant it was misfiring right then..
 
Last edited:
Mongo

Mongo

Well-known member
Apr 19, 2004
5,731
2
59
Reed Perry said:
10-4. thanks mongo, will do..
From my understanding and what ive been told,
the flashing SES light meant it was misfiring right then..
Click to expand...

yes... multiply misfires
 
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