Does the truck have the original engine and carbureted?
The generic info for problems at higher rpms, check for a blockage of some kind, fuel--air--exhaust.
How long since a tune-up? Any applicable trouble codes? It's not a tranny issue, correct?
SOURCE: 2000 pont. grand am dies at stops and low idle
I just got done with this same problem. Check a small looped vacuum hose just behind the mass air flow sensor which is attached to the air filter housing. the hose will be toward the plenom on the right side next to a blue connector. They have a tendency of getting soft.
SOURCE: Engine boggs down
either fuel filter or fuel pump...replace filter since its cheaper. 6-12 dollars at autozone
SOURCE: dies out when i start it and wont go past 35mph
not sure but the 89 probably has a mechanical fuel pump and this is a symptom of one getting weak.
SOURCE: car is dying out at higher rpms it boggs down till it shifts. soumnds like gas issue to me
Hello! There are several reasons for the fault you describe...Since you did not mention the Check Engine Light being on the trouble isn't being picked up by the computer...The top two causes would be; #1...A clogged fuel filter and #2...A fault in the Throttle Positioning Sensor (TPS)... this sensor can have a defect that will not be picked up...If the fuel filter hasn't been changed in quite some time, replace it...If that does not clear the problem the TPS can be tested with a voltmeter before you buy another...I'll send the test procedure for the TPS (very easy to do) if needed...Guru..saailer
I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867
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