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#1
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Had to tow car - multiple misfire codes
Car will not stay on and barely start. Happened out of nowhere. Getting codes 0300, 0301, 0305, 0303. Could it be a bad CPS? I had driven the car for 10 miles. Then it started hesitating and finally die. Any thoughts? Sparplugs have 30kmi. No leaks. Car has 135kmi. Thanks!!
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#2
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Without knowing what car you're talking about I'm going to go ahead and say no, not a CPS. Sounds like a failed fuel pump, but again without knowing what car there are some models where lack of fuel pressure is caused by something other than the pump.
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![]() 90 300TE 4-M Turbo 103, T3/T04E 50 trim T04B cover .60 AR Stage 3 turbine .63 AR A2W I/C, 40 LB/HR MS2E, 60-2 Direct Coil Control 3" Exh, AEM W/B O2 Underdrive Alt. and P/S Pulleys, Vented Rear Discs, .034 Booster. 3.07 diffs 1st Gear Start 90 300CE 104.980 Milled & ported head, 10.3:1 compression 197° intake cam w/20° advancer Tuned CIS ECU 4° ignition advance PCS TCM2000, built 722.6 600W networked suction fan Sportline sway bars V8 rear subframe, Quaife ATB 3.06 diff |
#3
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Sorry. 2005 CLK500
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#4
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Possible fuel pump but the connector that goes into the tank can overheat and fail too. First step is to confirm that lack of fuel pressure is the problem.
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![]() 90 300TE 4-M Turbo 103, T3/T04E 50 trim T04B cover .60 AR Stage 3 turbine .63 AR A2W I/C, 40 LB/HR MS2E, 60-2 Direct Coil Control 3" Exh, AEM W/B O2 Underdrive Alt. and P/S Pulleys, Vented Rear Discs, .034 Booster. 3.07 diffs 1st Gear Start 90 300CE 104.980 Milled & ported head, 10.3:1 compression 197° intake cam w/20° advancer Tuned CIS ECU 4° ignition advance PCS TCM2000, built 722.6 600W networked suction fan Sportline sway bars V8 rear subframe, Quaife ATB 3.06 diff |
#5
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Thanks!! Need to research how to test fuel pressure. I have done many repairs but never that one.
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#6
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Could someone advise which gauge to get to test the fuel pressure? Can one from autozone or o'reilley work?
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#7
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How old are the ignition cables?
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#8
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Original. But now car wont fire up at all. Fuel issue seems clearer
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#9
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Right now all of your misfires are on the same bank. Check for a clogged cat.
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#10
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???
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#11
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There was no fuel pressure at all in the rail. Order new fuel pump, filter and module assembly. Going all new. $500 and change.
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#12
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There was no fuel pressure at all in the rail. Order new fuel pump, filter and module assembly. Going all new. $500 and change.
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#13
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Was that not right? I checked the firing order here: | Repair Guides | Firing Orders | Firing Orders | AutoZone.com
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#14
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LH, 5-8
RH, 1-4 |
#15
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My bad - it shows the correct order farther down. Too bad, though, the cat scenario fit so nicely.
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