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Old 07-26-2011, 08:34 PM
guitarguy guitarguy is offline
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Unhappy HELP! Sputter, cough, no acceleration. IMRC? Coil? Injector?

Hi all,

I'm new here and having serious drivability problems with my 2002 2.3L 2WD Ranger. Symptoms: If I do any more than breath on the throttle when accelerating from a dead stop, the engine sputters and coughs and is quite reluctant to accelerate until the revs reach ~3000 rpm. This also happens if I manage to get up to a decent speed and attempt to accelerate.

A recent trip to my local AutoZone for a diagnostic check produces the following:

Code P1537
Intake manifold runner control fault-bank 1
ECM detected the signal from the IMRC was less than expected-Valve stuck open.
Probable cause:
1. Mechanical condition-
2. Open or shorted circuit condition

Code P0301
Cylinder misfire detected-cylinder number 1
The powertrain control module monitors the crankshaft speed and has detected a misfire condition.
Probable cause:
1. Ignition system fault-sparkplug(s), ignition wires, coil
2. Vacuum leak
3. Injector fault
4. High or low fuel pressure

Recent repairs:
When these symptoms first appeared, I replaced all plugs and wires. This did not improve the situation. I replaced both the vacuum lines on the IMRC (the lower one was indeed cracked open). This did not improve the situation. I replaced the fuel filter. This did not improve the situation. I am reliably informed that the fuel pump has been replaced approximately 4-5 years ago.

Might these problems all be related? If I replaced the IMRC, might the misfire problem be resolved as well? Other way around? Coil? Injector? Fuel delivery? Chasing an electrical or vacuum problem?

Any assistance would be most appreciated. Many thanks!

Best,
Tim
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2002 Ranger 2.3, 2WD
Daily driver and weekend warrior for home improvement projects and hauling band gear around.
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  #2  
Old 08-01-2011, 01:55 PM
mt1986 mt1986 is offline
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Default Re: HELP! Sputter, cough, no acceleration. IMRC? Coil? Injector?

check the electrical connection at the injectors if they are corroded it can cause some very weird driveability problems, my truck pinged and acted like it was running out of gas, if i let off the accelerater it wouldnt go when i put my foot back in it and got worse as time went by eventually dying and i would have to sit and wait for it to cool off, then it would restart and be fine for a while only to act up again, since i cleaned the injector connections it has not even missed or pinged at all. i removed the top half of the intake to gain access to the injectors, its not a difficult job, good luck
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Old 08-02-2011, 08:05 AM
guitarguy guitarguy is offline
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Default Re: HELP! Sputter, cough, no acceleration. IMRC? Coil? Injector?

mt1986,

Thanks very much for that helpful tip. I will indeed try this and follow up with my results.

Best,
Tim
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2002 Ranger 2.3, 2WD
Daily driver and weekend warrior for home improvement projects and hauling band gear around.
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