1997 Bonneville acting up

Please help if you can I have a 97 Bonneville I recently it started acting up. 1st problem, she dont like to start without alittle tap on the gas after 10 seconds of no go key turning. 2nd problem when she does start she idols very rough, she'll jump from 1000rpm (normal for her) to 500rpm up to 3000rpm until she stop bucking. 3rd problem while she is moving slow she likes to stall and she'll stall while she's moving, at a light anywhere she wants to. Now where up to 4 when she does stall she starts up again sometime rougher then others. 5 after she stalls while shes sitting, she'll run for 5 minutes (if that I've had it last 10 seconds sometime) she'll start come down from a rough idle, go to normal last 2 min and die. Check engine light not on, when running she's got 12-14 volts of juice, running 87 Octain, Only brand I trust Mobil, it does the engine good.

What I've noticed, every time she does, the idiot bell dings at me as if I didn't know she hated me, at night you can see the lights dim, and during the day and night she likes to say battery going down hit gas to give power.

What I've done, did a tuneup, this is the 4th time shes had one, first one at 86,000 miles, seconds one at 90,000 miles when the intake went and moron machic didn't wanna listen to what I said to put in, third one at 102,000 miles when the cat went because of the cheap assed plugs he put in, third one at 159,000 miles I put in Bosch Platinum 4 with Bosch wires. While I was at it, I changed the fuel filter, oil, tranny fluid, I was busy today, and nothing worked, also filled her up and was trying to run lucas fuel injector cleaner. Anyone have any idea's????? Please help...... I can only keep :smokin: for so lone before money and cig's run out. If anyone is lives in Connecticut in the vally area or wants to hear for them selfs please call me at 203-923-7456 please any help is good.

Check all the battery connections especially grounds, also have the alternator checked for out put under load.

Bosch plugs are junk, and I don't have a favorable opinion of their wires either. I'd put AC-Delco plugs and wires on it and check the TPS (Throttle positon Sensor). There is an arm that comes from the TPS that rides on the throttle body shaft that can get bent and send a bad signal to the ECM, causing idle, hard start, and driveability issue at part throttle and idle. The other thing I'd check is the IAC (idle air control) valve in the throttle body for carbon deposits and gum/varnish. If it is sticking in it's bore, it will also cause idle/off idle problems.

Please help if you can I have a 97 Bonneville I recently it started acting up. 1st problem, she dont like to start without alittle tap on the gas after 10 seconds of no go key turning. 2nd problem when she does start she idols very rough, she'll jump from 1000rpm (normal for her) to 500rpm up to 3000rpm until she stop bucking. 3rd problem while she is moving slow she likes to stall and she'll stall while she's moving, at a light anywhere she wants to. Now where up to 4 when she does stall she starts up again sometime rougher then others. 5 after she stalls while shes sitting, she'll run for 5 minutes (if that I've had it last 10 seconds sometime) she'll start come down from a rough idle, go to normal last 2 min and die. Check engine light not on, when running she's got 12-14 volts of juice, running 87 Octain, Only brand I trust Mobil, it does the engine good.

What I've noticed, every time she does, the idiot bell dings at me as if I didn't know she hated me, at night you can see the lights dim, and during the day and night she likes to say battery going down hit gas to give power.

What I've done, did a tuneup, this is the 4th time shes had one, first one at 86,000 miles, seconds one at 90,000 miles when the intake went and moron machic didn't wanna listen to what I said to put in, third one at 102,000 miles when the cat went because of the cheap assed plugs he put in, third one at 159,000 miles I put in Bosch Platinum 4 with Bosch wires. While I was at it, I changed the fuel filter, oil, tranny fluid, I was busy today, and nothing worked, also filled her up and was trying to run lucas fuel injector cleaner. Anyone have any idea's????? Please help...... I can only keep :smokin: for so lone before money and cig's run out. If anyone is lives in Connecticut in the vally area or wants to hear for them selfs please call me at 203-923-7456 please any help is good.


Have your MAF (Mass Air Flow) sensor checked.