2000 GMC Safari Miss on Cylinder #4

WARIK

MEMBER
2000 GMC SAFARI
6 CYL
FWD
AUTOMATIC
110,000 MILES

The other night I was driving home and the throtle control cabel that connect from the accelerator pedal to the engine broke in half. I had that replaced today, and now when I drive the car it runs horrible. The engine is clearly getting a mis-fire. I had the engine code run and it is showing a miss on Cylinder number 4.

I was thinking that maybe when they replaced that throtle control cable they might have screwed up the sparkplug cable going to theat cylinder?

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

The engine is clearly getting a mis-fire. I had the engine code run and it is showing a miss on Cylinder number 4.

Misfire @ no.4 should lead you to check that cylinder's sparkplug/compression/injector

Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

-1

Friday, June 19th, 2009 AT 7:16 PM

WARIK

MEMBER
2 POSTS

The thing it is has never had a problem with this unitl this throtle cable broke last night. It was 30 for the cable and 90 for the labor to get that fixed which is not horrible, but when I got in it, it was running just horrible.

They are going to take a look monday and I am hoping that they just screwed up a spark plug wire or maybe it needs a new plug. Sadly I am not sure if it is somthing the shop did when replacing that cable or if it is something else not related. Anyway, I will ask them to check those things. Thank you!

Was this

answer