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98 Grand Prix GT intermitant stalling during initial accelleration. by FIEROPHREK
Started on: 05-18-2014 09:12 PM
Replies: 14 (108 views)
Last post by: James Bond 007 on 06-09-2014 10:52 AM
FIEROPHREK
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Report this Post05-18-2014 09:12 PM Click Here to See the Profile for FIEROPHREKSend a Private Message to FIEROPHREKEdit/Delete MessageReply w/QuoteDirect Link to This Post
So my Grand Prix has this weird intermittent problem. It will stall out when pulling away from a stop sign or red light. The car usually only gets up to like 5 mph before it shuts down on me, usually leaving me half way in an intersection or with a line of cars behind me about to run into me. It will restart and run fine after about ten seconds or more of cranking. I've searched the internet and can't find anything. I have heard rumors of it being a wheel speed sensor problem. Was wondering if anyone here has had any experience with this. Would like to get fixed before I get T-boned by an 18 wheeler LOL. Thanks

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ARCHIES JUNK IS FASTER THAN SHAUNNA'S JUNK

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Hank is Here
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Report this Post05-19-2014 10:27 AM Click Here to See the Profile for Hank is HereClick Here to Email Hank is HereSend a Private Message to Hank is HereEdit/Delete MessageReply w/QuoteDirect Link to This Post
Can you provide some details on the powerplan in the car?

Does it throw and SES lights? I would lean towards an ignition issue such as a ignition module or coil going south but not quite gone yet. Secondly after that I would possible think fuel pump...that would be simple to test with a pressure gauge.
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FIEROPHREK
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Report this Post05-19-2014 11:45 AM Click Here to See the Profile for FIEROPHREKSend a Private Message to FIEROPHREKEdit/Delete MessageReply w/QuoteDirect Link to This Post
My car has the series 2 3800 na motor with the 4t65e trans. I do get an abs light and my trac off light comes on but resets once the ignition is turned off then back to start. If I just twist the key to start after it happens (after i crap my pants and put it in nuetral first) without turning the ignition off first the lights will stay on and I cannot turn my traction control back on until I shut it all the way down.

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ARCHIES JUNK IS FASTER THAN SHAUNNA'S JUNK

12.3 is faster than a 13.2

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tesmith66
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Report this Post05-19-2014 01:07 PM Click Here to See the Profile for tesmith66Send a Private Message to tesmith66Edit/Delete MessageReply w/QuoteDirect Link to This Post
One or both of your front hubs is bad. VERY common problem on these cars. You have 2 options: 1.- Do nothing and live with it or 2.- Replace the hubs with high quality Timken units. The ABS sensors have failed and are integrated into the hub, making sensor replacement impossible. I doubt you want to dump $400-$600 into this old car (even more if you have to pay for labor), but that's the only fix. Cheaper hubs are available anywhere, but they have a spectacularly high failure rate.

Been there, done that, got rid of the freakin' car and never looked back.

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1986 SE Aero coupe.

3.4 DOHC swap is complete and running, now just have to finish the rest of the car...

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tesmith66
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Report this Post05-19-2014 01:10 PM Click Here to See the Profile for tesmith66Send a Private Message to tesmith66Edit/Delete MessageReply w/QuoteDirect Link to This Post

tesmith66

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If you replace them yourself, do not use impact tools. The axle nut and the hub mounting bolts must be torqued by hand. They are so fragile that impact tools will ruin the sensors.

Ask me how I know...
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FIEROPHREK
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Report this Post05-19-2014 02:05 PM Click Here to See the Profile for FIEROPHREKSend a Private Message to FIEROPHREKEdit/Delete MessageReply w/QuoteDirect Link to This Post
It just happened to me again today in the parking lot at work. Just shut off not abs or trac light this time. I have autozone front wheel bearings on it now. They are probably toast. Would bad rear bearing/speed sensor cause this as well? The rears are oem with 235K on them.

Thanks for the knowledge!!! +'s

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ARCHIES JUNK IS FASTER THAN SHAUNNA'S JUNK

12.3 is faster than a 13.2

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tesmith66
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Report this Post05-19-2014 03:58 PM Click Here to See the Profile for tesmith66Send a Private Message to tesmith66Edit/Delete MessageReply w/QuoteDirect Link to This Post
I better clarify my statements. Bad ABS sensors will cause the trac off, abs off check tire pressure lights to come on with the disabling of ABS and traction control (same system). I don't know what is causing the stalling. Do you know if its ignition or fuel related? Check all fuel related electrical connections as well as all ignition connections. You may have to get your ICM tested (Oreilly's can do that for free). Make sure they run the test 3 or 4 times in quick succession to get the module up to temp.
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Shade Tree Fiero
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Report this Post05-19-2014 08:00 PM Click Here to See the Profile for Shade Tree FieroSend a Private Message to Shade Tree FieroEdit/Delete MessageReply w/QuoteDirect Link to This Post
It sounds like a bad mass air flow sensor
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Valkyrie
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Report this Post05-19-2014 11:44 PM Click Here to See the Profile for ValkyrieClick Here to Email ValkyrieSend a Private Message to ValkyrieEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Shade Tree Fiero:

It sounds like a bad mass air flow sensor


I'll second that. Had three of these cars and 2 out of the 3 of them had an issue with the MAF sensor.
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James Bond 007
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Report this Post05-30-2014 11:12 AM Click Here to See the Profile for James Bond 007Send a Private Message to James Bond 007Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Shade Tree Fiero:

It sounds like a bad mass air flow sensor


I agree.Allso try pulling the codes.
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James Bond 007
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Report this Post05-30-2014 11:13 AM Click Here to See the Profile for James Bond 007Send a Private Message to James Bond 007Edit/Delete MessageReply w/QuoteDirect Link to This Post

James Bond 007

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quote
Originally posted by FIEROPHREK:

It just happened to me again today in the parking lot at work. Just shut off not abs or trac light this time. I have autozone front wheel bearings on it now. They are probably toast. Would bad rear bearing/speed sensor cause this as well? The rears are oem with 235K on them.

Thanks for the knowledge!!! +'s


Probubley not.
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fieroguy123
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Report this Post05-31-2014 10:15 PM Click Here to See the Profile for fieroguy123Click Here to Email fieroguy123Send a Private Message to fieroguy123Edit/Delete MessageReply w/QuoteDirect Link to This Post
I agree with everyone on the point about the Maf sensor. However, if that fails to fix your problem I have a short story to tell you...

I had a blazer come into the shop one time with the exact same problem that you're experiencing and it turned out that one of the baffles inside the gas tank had broken off and lodged itself against the fuel pump in such a way that when sitting at idle, it restricted fuel from being able to make its way to the pump then when he hit the gas it would such the fuel line dry until the vehicle came to an abrupt halt which moved the broken baffle long enough for the fuel to make its way back to the pump again.

I know its a long shot, but don't rule it out. It took me a whole week to figure that one out and a hell of a lot of frustration...
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fieroguy123
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Report this Post05-31-2014 10:45 PM Click Here to See the Profile for fieroguy123Click Here to Email fieroguy123Send a Private Message to fieroguy123Edit/Delete MessageReply w/QuoteDirect Link to This Post
Dang double post....

[This message has been edited by fieroguy123 (edited 05-31-2014).]

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86soon3.4
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Report this Post05-31-2014 11:11 PM Click Here to See the Profile for 86soon3.4Send a Private Message to 86soon3.4Edit/Delete MessageReply w/QuoteDirect Link to This Post
These cars are also known for the ABS wires going to the wheel speed sensor to break and cause intermittent ABS/TRAC light to come on. Had a Buick Rendezvous and a Grand Prix break both right and left sides. You can get replacement wires from an auto parts store. Dorman makes them.


Steve
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James Bond 007
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Report this Post06-09-2014 10:52 AM Click Here to See the Profile for James Bond 007Send a Private Message to James Bond 007Edit/Delete MessageReply w/QuoteDirect Link to This Post
On some GM cars, the water pump will drip right on the timeing sensor (not good). Check to see if your car is dripping coolant from the water pump. If your car has over 160,000 miles on it, you should get the fuel pressure tested.
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