Question on 1999 Riviera Engine issue

Subject: Re: Question on 1999 Riviera Engine issue Thu Apr 09, 2020 5:41 pm

You got me beat, I only have 200,000 on mine, MAF is the only sensor I replaced. Stalled my engine when it went bad. Had to unplug it to get home. Yeah, they make a big difference when you replace them.

_________________
98 Riviera SC3800 All stock except gutted air box.
1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ
Best MPH, 116.06 MPH, Best ET, 11.54
https://www.youtube.com/watch?v=UHCda-t_Jls
https://www.youtube.com/watch?v=sfT2tEO4XcU

Subject: Re: Question on 1999 Riviera Engine issue Thu Apr 09, 2020 5:47 pm

LARRY70GS wrote:: You got me beat, I only have 200,000 on mine, MAF is the only sensor I replaced. Stalled my engine when it went bad. Had to unplug it to get home. Yeah, they make a big difference when you replace them.

Well that is my 1997 Larry, my 1999 Riv has 84,200 original miles on her. rough estimate without looking. And its snowing like crazy outside right now. LoL

Subject: Re: Question on 1999 Riviera Engine issue Thu Apr 09, 2020 6:09 pm

My 98 had 85,000 on it when i bought it in 2004.

_________________
98 Riviera SC3800 All stock except gutted air box.
1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ
Best MPH, 116.06 MPH, Best ET, 11.54
https://www.youtube.com/watch?v=UHCda-t_Jls
https://www.youtube.com/watch?v=sfT2tEO4XcU

Master Joined : 2007-01-16 Post Count : 8057 Merit : 105

LARRY70GS wrote:: You got me beat, I only have 200,000 on mine, MAF is the only sensor I replaced. Stalled my engine when it went bad. Had to unplug it to get home. Yeah, they make a big difference when you replace them.

Where is the MAF located?

Subject: Re: Question on 1999 Riviera Engine issue Fri Apr 10, 2020 5:47 am

Jack the R wrote:

LARRY70GS wrote:: You got me beat, I only have 200,000 on mine, MAF is the only sensor I replaced. Stalled my engine when it went bad. Had to unplug it to get home. Yeah, they make a big difference when you replace them.

Where is the MAF located?

You could have googled it, but here is a youtube video that shows you. smile

Very easy to replace.

https://www.youtube.com/watch?reload=9&v=4b6Qr_qIhl4

Subject: Re: Question on 1999 Riviera Engine issue Fri Apr 10, 2020 7:40 am

Thought I would also post a picture of the MAF to show location. smile

Question on 1999 Riviera Engine issue - Page 2 Maf_se10

Subject: Re: Question on 1999 Riviera Engine issue Fri Apr 10, 2020 9:15 am

I didn't ask where it was, Jack did. I replaced mine years ago. smile

_________________
98 Riviera SC3800 All stock except gutted air box.
1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ
Best MPH, 116.06 MPH, Best ET, 11.54
https://www.youtube.com/watch?v=UHCda-t_Jls
https://www.youtube.com/watch?v=sfT2tEO4XcU

Subject: Re: Question on 1999 Riviera Engine issue Fri Apr 10, 2020 11:11 am

LARRY70GS wrote:: I went on the advice of a mechanic about the MAF. Normally I would buy the AC Delco, but he told me the Hitachi was just as good. And As you said, cheaper. Didn't look at the warranty. When I unboxed the Hitachi, it was exactly the same part, same markings, exactly. My conclusion, Hitachi made the part for GM. Still good after 2 years, so I guess I am ahead of the game.

The AC Delco parts are usually the most expensive, but not always. Years ago, I bought some AC 41-101 Iridium plugs for the Riv. When I unboxed them, it had an AC part number on them, and also, the NGK part number (ITR4A15) and NGK stamped into the metal shell. The AC's were actually 2.00/plug cheaper.

Your conclusion about Hitachi is correct, they made the throttle body for GM. If you look around the sides hard enough you will find their logotype cast into the TB on a little rectangle.

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