2000 GMC Jimmy Repair Question
Topics covered: Fuel filter, Fuel pressure, Trouble code.
Mileage: 128,000 miles.
Mileage: 128,000 miles.
Asked on October 1, 2012
P0300 misfire & loss of power
I have a 2000 Jimmy 128k. I loose power & get a miss fire code under load. when I tow up a hill start feeling loss off power. Almost dies. Also happens cold when going up a hill. Changed the obvious (plugs, cap, rotor, also cam & crank sensors) and use only Delco parts
Asked by musicmandonAnswer
Replied on October 1, 2012
Have the fuel pressure checked. You could have a clogged fuel filter affecting the fuel supply resulting in loss of performance.
If the Malfunction Indicator Light is shoiwng, get a scan to cehck for trouble codes.
Replied on October 8, 2012
Checked fuel line, it had some fluxuations. Changed to a Delco fuel filter. First day out up inclune in road (first 10 mins) idoit light on Misfire
Replied on October 8, 2012
What is the trouble code?
Replied on October 8, 2012
P300 random misfire (90%) cyc 4 10% but I think that was by chance
Replied on October 8, 2012
Basics have been covered so you need to go further into diagnostics.
Have you checked the fuel pressure and air filter ?
Try cleaning the MAF.