99 Bonneville engine stumbling
#11
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From: hobart indiana (1 hr from chicago)
id run some sea foam thru the vacuum hose on your brake booster with the car running. its only a couple bucks and cant really hurt to try. all the directions are on the bottle. personally i didnt use enough to make white smoke come out of the tailpipe. i just used what the bottle said.
#14
your po300 is a random multiple misfire.That is Usually a spark issue..
and the po171 Usual causes for this code:
Leaking PCV Valve Hose
Contaminated MAF Sensor
Leaking Intake Manifold Gaskets
Bad O2 Sesor
This code is set becasue the PCM inputs indicate that the bank 2 cylinders are running too lean to be corrected. This is based on
readings from the MAF, TPS, and Bank 2 O2 Sensor. I'd check the PCV valve hose first. Then I'd consider cleaning the MAF.
and the po171 Usual causes for this code:
Leaking PCV Valve Hose
Contaminated MAF Sensor
Leaking Intake Manifold Gaskets
Bad O2 Sesor
This code is set becasue the PCM inputs indicate that the bank 2 cylinders are running too lean to be corrected. This is based on
readings from the MAF, TPS, and Bank 2 O2 Sensor. I'd check the PCV valve hose first. Then I'd consider cleaning the MAF.
#15
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From: Windsor, Ontario / Detroit, Michigan
#19
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From: Windsor, Ontario / Detroit, Michigan
I did check for gas in the vacuum tube, a very faint smell of gas. Nothing leaking out, like I've heard about. Figured a faint smell would be normal. Where'* the PCV valve? Can't seem to locate it. As for the gas pressure, I don't have one. May have to borrow from the mechanic.
Check it again. If you still smell gas in the vac hose that goes to the FPR, replace the FPR. It can cause the symptoms you are experiencing.
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raffmanlt
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03-10-2004 11:37 AM
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