Question about Pontiac Grand Am

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Mky 2001 pontiac grand am is losing power and not shifting right we changed the transmission and engine and the same problem we were wondering if the cadiletic converter could be the problem???

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Yes if the catalytic converter is clogged it will cause a loss of power. The engine is sucking in air but cant push it out the exhaust. A quick way to check if the converter is clogged is to remove one of the O2 sensors before the converter. Your neighbors wont be happy with your loud car when you go for the test drive but if the power is restored you know what your next fix will be. Good luck

Posted on Aug 28, 2010

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Posted on Jan 02, 2017

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2001 Jeep grand cherokee doesn't shift out of second once engine gets warm.


2001 no engine stated. sad.
welcome to computer shifted gear box.
its called a TCM
it does all shifting
so scan the PCM and see why
you cant fix modern cars lacking a scan tool

the engine is misfiring, has 50 causes.
it not the transmission
transmissions can only shift up if the engine makes full power.
it's not making full power, fix the engine, EFI
scan it. ok?



we have posted misfire posts here 100s of time's in fact its endless..
short list.
full tuneup done.
engine gets to 180f and not running cold all the time, scan it to see that. (data scans)

ECT reads 180f.? good or above. and holds
ECT reads low but thermal gun shows say 180f
oops ECT is bad.

no DTC errors stored?, I bet there are.
4.0L coil pack bad?
sparks are new you said.
fuel pressure way too high.?

to scan it , drive to driving cycles.
many errors are not reported with just one drive cycle.
Misfire, errors, DTC P030x , takes 2 full driving cycles , cold to hot engine, and more rules, read misfire, monitor rules in SM.


The engine light starts flashing

that means the EFI system detects gross misfiring
the flashing part means, if you read the opr guide, or SM
that its my damage the CAT converter, due to overheating, it.
it says, there, drive easy to service shop.

the lamp also means and proves the errors
are there stored in the ECU memory called DTC errors.

but if you keep doing driving cycles, they can clear , causes this evidence to erase.
fools many folks this auto clear features.

owning a real scan tool avoids all this , dancing about.

Mar 11, 2017 | 2001 Jeep Grand Cherokee

1 Answer

My nephew has a 93 pontiac sedan sport with a 2.3ltr engine. i had him cahnged the spark plugs because is lacks power when you step on the gas. it revs up but the pick up is delayed and its has a slight...


You will need to change fuel filter air filter pug wires and clean all injectors with a high quality cleaner that is poured into the fuel tank.Check MAF sensor and both 02 sensors.These will make a big difference in performance.

Oct 19, 2010 | 1993 Pontiac Grand Am

1 Answer

I bought a 1992 Pontiac Grand Prix 3.1 multi-port fuel injected, to use as a beater. Runs fine but I would like to know if there is any simple way to reducing the shift points. At present it's 15MPH 1st to...


your right they are great shifting times on a good transmission,But if you tried to change any of them it would be a bigger burden on the load of the engine and the transmission.You be better off to just let off the gas to shift it quicker.

Dec 14, 2009 | 1992 Pontiac Grand Prix

2 Answers

How many quarts of transmission fluid does it hold


You didn't state what size engine you have.
The 2.2 engine----- 6.9 qts.
The 2.3 engine-----7.4 qts.
The 2.4 is 7.4 qts.
The 3.1 is 7.4 qts.
The 3.4 is 6.9 qts.
These are the capacities for refilling after being drained.

Nov 17, 2009 | 2001 Pontiac Grand Am SE

2 Answers

2001 GRAND am GT LOW ON POWER AND WON'T SHIFT UNTIL IT IS HIGH RPM THEN SHIFTS HARD AND DOES IT AGAIN TO NEXT GEAR. iF i LET OFF IT WILL SHIFT BUT VERY DOGGY. cHANGED PLUGS & FUEL FILTER BUT DIDN'T...


Check the transmission fluid the car needs to be running and in park to do so, if it is low that could be your problem if not look at the fluid it should be red, if it's brownish and it has a burnt smell to it you may need transmission work

Aug 18, 2009 | Pontiac Grand Am Cars & Trucks

3 Answers

I have a 2002 pontiac grand am gt that is'nt shifting gears right


Check you oil level sounds like its low, other wise your looking for new transmission.

Mar 14, 2009 | 2003 Pontiac Grand Am

2 Answers

1-2, 2-3 Shift solenoids on 2001 Grand Prix GT


I just did this today just lower the subframe it was plenty of room and didn't have to take it out

Jan 06, 2009 | 2001 Pontiac Grand Prix

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