Any help is much appreciated. I am having a problem that is getting worse. When starting up the car for the first time that day (engine cold), the car dies rather quickly and typically takes 3-4 starts before staying on. For the first few minutes it idles rough with frequent drops in RPMs. If I attempt to drive during this time I get random bouts of acceleration as well as loud bangs/knocks. When this happens my SES light flashes. I pulled the codes this morning.


P0134
p0305
p0301
p1300
p0307
p0300
p0171
p0174
p1590


The O2 codes I have had for a while now and are intermittent. I likely need to replace the O2 sensors in the near future. I do have the three amigos which I am currently resolving which covers the ABS code.


The misfire/coil codes are new. My initial thought is that with the cylinder 1,5,7 and random misfire codes as well as the coil code that I have an ignition coil going bad. My current plan is to do an induction cleaning to clean the system out, then replace the plugs, wires, and coils.


Thoughts?


2002 Discovery SE

 

Definitely do plugs, wires, coils. Also clean the MAF with electrical contact cleaner, just spray don't wipe the wire with anything. The O2s are a must too, when they get bad enough they have been known to cause funny issues like this. Amazon seems to have the best price on Bosch O2s, and I've yet to find another brand that works even remotely.

Also, don't drive the truck like this. At all. Don't even start it if you can help it. Misfires will kill catalytic converters like nobody's business, especially that many on one bank.

 

My truck did something very similar to this a while back. It ended up being a massive vacuum leak on the intake manifold. It would run horrid until the engine got a little heat in it, then the leak would slow down and eventually stop as the engine warmed up.
All I did was replace the intake manifold gaskets and that cleared up all the codes.

 

Thanks for the info and comments. One thing I didn't mention was that when this happens on start up I get a strong gasoline smell out of the back of the truck. I assume that this is because of the misfires.