I appreciate all the help I can get on this one. I own a 94 SL1 with about 115,000 to 130,000 miles don't know for sure how many the odometer was broken fora couple of years. The problem that I have been experiencing for the past two years is thecar surges/hesitates during light accelerationfrom speeds of 25 to 50 miles an hour. IfI am traveling at 25 to 50 miles an hour and let off the gas and then give it the gas lightly it bucks and jerks about 3 to five times or until I press the accelerator about half way to the floor and then it goes and drives fine.No codes. Idles fine in drive or park.In the past few monthsI have replaced the following. Spark plugs and wires, PCV valve, valve cover gasket (fixed my oil leaks)air filter, fuel filter, oil and oil filter, transmission fluid, antifreeze, water temp sensor (this was bad). Map sensor, map sensor vaccum line (it had a burn/rub hole inthe angle fitting by the throttle body), EGRsolenoid, cleaned the throttle body, cleaned the EGR valve and checked all the related vaccum lines. The EGR valve moves freely with vaccum applied to it. I went down the EGR road and replaced the map sensor because I actually got a 32 code once but cleared it while changing the map sensor and it hasn't come back. I have also got a 45 code (O2 sensor rich) once while idling at a traffic signal in netural when theengine was cold I cleared it and it came back once more so I cleared it again and don't idle in netural and it hasn't come back.Its a good little car that has been in the family since it was new and only a part time driver my sister drove it for years just 3 miles back and forth to work each day. She sold it to me because the dealer would only give her 500 bucks for trade on a newer one 4 years ago when it only had about 80,000 miles. Now a days I just drive it to church on Sundays and take it on a freeway ride for about 160 miles one weekend a month and a couple a weeks a year. I am getting about 22 Mpg in town and about 28 on the hiway. Thanks for any suggestions. I am going to take one more crack at it and if I don't resolve it myself I am going to take it to the dealer.

 

Check out what I posted in your other thread:

https://www.saturnforum.com/forum_po...?TID=2603&PN=1

 

Thanks for the tips. I will check it out this weekend and get back to yall. Ps if you don't want the trackers when you post something hit the clear form at the bottom of the post reply page when you first open it. Then type your message. Thanks again SL1driver.

 

You can also select No under "Enable the WYSIWYG post editor" under your profile settings.

 

I am pretty sure I replaced the correct sensor it has been a few months but before I replaced it theradiator cooling fan would not turn on unless I turned on the A/C and thewater temp gaugewould indicatevery warm almost to the redbut thefan would not turn on.AccidentlyI turned on the a/cin an attempt to turn on the heat and save the motor while stuck in traffic once and I heard the radiator or a/c fan turn on under the hoodandthewater tempcooled down. So anytime it was hot outside I drove with the A/C on. The odometer and fuel gauge were broken for yearsmileage wan't a problem I just filled it up every month or when I figured it might need some gas its not a daily driver. Since I replaced the sensor the fan works well and comes on with the a/c on or not. I haven't tried the egr trick yet. I may just go buy one anyway. I had to drive it out of town about300 miles total the past few daysand it's still doing it.City and highway driving I averaged 24 Mpg.I was driving in the hotel parking lot up and down the ramps last night and it threw another code45 but drove home 80 miles on the freeway with no codes today. Thanks for any suggestions.

 

Thanks Everybody. I replaced the EGR Valve yesterday and it drove wonderfully today.

 

Sounds good.