1998 VOLVO v70 xc Misfire Ignition problem

Post by **Ludermilch** » 11 Jun 2015, 21:12

I'm on my road trip and the car has developed random misfires all across the board. At first it was #2 then #4 & #5, now #1&#3.

I've been hauling a camper 2000 miles and I think I have worn out the cap and rotor,even though they are only 2 years old.

I'm stuck in Montana if this gets worse.

Post by **Ludermilch** » 11 Jun 2015, 23:06

Not the rotor or cap

Post by **bskeels** » 11 Jun 2015, 23:25

check your vacuum lines, especially the one by the power steering pump on the manifold, I had one that keep sliding off there and giving random misfire codes

Post by **erikv11** » 11 Jun 2015, 23:29

I agree on the vac leaks, start there first. Another idea: Weak coil spark? There have been a few reports of that recently.

Post by **precopster** » 12 Jun 2015, 01:39

I hate to tell someone on a road trip and stuck in Montana (could be worse things I suppose) to do a compression test........but

Post by **erikv11** » 12 Jun 2015, 06:48

He just did the head gasket, before the trip.

https://www.matthewsvolvosite.com/forums ... =1&t=70065

draser · Post by **draser** » 12 Jun 2015, 07:16

Losing any coolant?

Post by **Ludermilch** » 12 Jun 2015, 07:47

Not loosing coolant. It only does it when it's hot. Not warming up or cold.

It did very well from GA until Wyoming. I'll check lines now.

Post by **erikv11** » 12 Jun 2015, 07:57

Problem when hot is consistent with an electrical issue, makes me wonder some more about the coil. Can you get one cheap like from a junkyard? They rarely go bad but they do.

Any other good ideas about electrical that would give multiple misfires, maybe the fuel injection relay?

Post by **abscate** » 12 Jun 2015, 09:13

Im going with coil on this one, too. We have had several reports of coils that give a blue spark but replacing them anyway solves poor running problems

Wires are new Bouugicord, right?