98 s70 GLT Misfire

samtron6 · Post by **samtron6** » 17 Feb 2016, 14:59

hello all been a while... ok here is my problem.....

never had a problem with misfire till i just changed my plugs and wires... now my check engine came on and it says misfire in cylinder 2... so i reset the code then drove for about 15 min and CEL again pulled code now its misfire in cylinder 2/4/5... sooo i changed plugs with copper ones and still the same thing.. so i cleared the code again and now only cylinder 2... then clear again then its cylinder 2/4/5... what in the world is going on thank yall soooo much for your time

Post by **erikv11** » 17 Feb 2016, 16:51

Are you sure the wires are back on in the same order, each one hooked to the proper cylinder?

Also what brand are the new wires, these engines are very picky and if the wires are not Bougicord then their performance can be very unpredictable.

samtron6 · Post by **samtron6** » 17 Feb 2016, 17:00

did one at a time plug then wire and moved to the next... lol um i thing duralast part # E801077 autozone wires and autolite copper plugs... it runs fine for like 10 min got power but then starts to lag alot and have to gun it to even get up a hill sometimes hot or cold

Post by **erikv11** » 17 Feb 2016, 17:12

Those Duralast wires may be the problem. Autolite copper plugs are fine.

samtron6 · Post by **samtron6** » 17 Feb 2016, 17:14

which do you prefer? those were 119$

samtron6 · Post by **samtron6** » 17 Feb 2016, 19:14

should i try my old wires to rule the new ones out

Post by **erikv11** » 17 Feb 2016, 19:58

I don't know the Duralast Gold, it may be OK but I just don't know. People have had lots of trouble with various brands, for example Bosch wires are problematic on these cars.

For sure Bougicord is OK, that is the plug wire make it came with from the factory. For $55 plus shipping, these wires will be 100% trouble-free for, let's say, at least 6 years (and probably a lot longer): https://www.fcpeuro.com/products/volvo- ... 70-9135700

I would probably swap back in the old wires to see, sort of a PITA but that's a good idea for a test.

samtron6 · Post by **samtron6** » 21 Feb 2016, 22:01

well old wire are in and everything was fine till CEL on again..... now its random misfire,,,,, and misfire cylinder 2 and 4 instead of 2/4/5... plugs are gapped right wires are in the right spots... after CEL comes on it runs like crap for a few then runs fine till i sit at a long light then it tries to bogg down for a second when giving gas... never did this till i changed plugs ??????

Post by **erikv11** » 21 Feb 2016, 22:28

Almost has to be something related to the repair work. Is the MAF wire still connected properly? Trying to think of what is in the area that could cause it.

I doubt it is the plugs but maybe they gave you the wrong ones, which Autolite plug is it?

Stalling at idle is a classic vacuum leak symptom, did you bump some hose and unhook it? Maybe spray around with some starter fluid, look for vac leaks.

samtron6 · Post by **samtron6** » 21 Feb 2016, 22:37

autolite copper plugs like $1.79 each... did it without unhooking the MAF i have a cold air intake on it so it wont in the way of the DIS cap ROT cap..... sometimes it will pop the CEL when cold start up but mostly when it warms up.....idk what it could be.. just changed plugs and wires and now all this crap LOL.. checked alldata nothing i hit or unhooked unless i messed up the dis cap or rot cap which ever lol im tired.... I can clear the code and it will run almost all day with no problem but then some days its 10 minutes after clearing the codes