this car when cold runs great soon as it warms up it tries to die and sputters,jerks ect.I dont know, could it be coil packs or mass air flow? anyway to check before replacing?thanks in advance.
2007-09-14 17:23:47 · 6 answers · asked by Rick 1 in Cars & Transportation ➔ Maintenance & Repairs
Does the check engine light come on? Any computer-controlled devices like MAF sensor, temp sensor or crank sensor,etc...should set off a trouble code if they are not working properly or getting a bad reading. The ignition coils and module are not in the closed loop of the computer system and will not set off a code if they're bad, so I suspect the coils or module are bad which is common and produce the problem you're having. My mom's Buick Lesabre with the 3.8 engine did the same thing. You should replace the module and coils as a set because if one or the other goes bad from heat buildup, it causes a strain on the rest and they will fail soon anyways. Some parts stores offer to test them if you bring them in off the vehicle but I don't think they can do it accurately as they need to be tested when they are hot from engine heat to see if they are failing....not just removing them when the engine is cold....3 coils and the module usually run a couple hundred dollars. If not done already, you may want to replace plugs and wires as well.
Batauto.com has info on trouble codes and how to get them if the check engine light is coming on...drop down menu on right side of the homepage.
2007-09-14 20:03:06 · answer #1 · answered by paul h 7 · 0⤊ 0⤋
The coil pack would be the last thing that I would check on the car. The Ignition control module would be the frist thing that I would check. A MAF possibly could be but I would check the Intake air temp sensor before a MAF. If you are having a rich exhaust when the car heats up then go for the MAF. Otherwise check the control module and the Crank Sensor
2007-09-14 18:56:42 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Does it actually stall out or does it just run crappy. These cars were notorious for failing crank sensors and ignition modules and coils and MAF sensors. To eliminate the MAF sensor, gently tap on the portion of the sensor where the connector plugs into. If the vehicle stalls or runs crappy then you've nailed the culprit. A failing coil will not make the engine stall out but will make it run crappy..misfire,hesitate. A failing crank sensor will make the engine stall out, especially when hot.
2007-09-14 17:34:12 · answer #3 · answered by Anonymous · 0⤊ 0⤋
If it has a first-rate charger or is a top efficiency engine it runs on premiium . nonetheless for those who do the mathematics the cost of fuel works out to approximately a four buck according to tankful hit or approximately one gallon of fuel according to tankful. I get a giggling kick within the butt for each and every nut who whines approximately wasting 15 miles according to TANKFULL BFD that's too humorous you emerge as with a fab killer walking muscle vehicle with a few well vigor and so they cry over a gallon further a tankful out of the pockets . cross determine. Most top efficiency engines the pc can compensate a few, however no longer ample to run round the town like steve claims NO you can not use constant it'll ping like hell up a hill and steve might seem hella humorous along with his pinging bonneville suffering up a steep hill sounding like its gonna blow. going rattle tattle tattle sputter rattle
2016-09-05 14:52:47 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Don't think MAF just yet. Try coolant temp sensor or have it scanned with a good mechanic.
2007-09-14 17:31:54 · answer #5 · answered by Lab 7 · 0⤊ 0⤋
check to see if it has two temp. sensors. one for the Gage and one for the computer. more than likely the one for the computer is giving a false reading. if so try swapping the wires to see what the gage says.
2007-09-14 17:30:47 · answer #6 · answered by tiretech 1 · 0⤊ 0⤋