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Chevy Suburban

944 messages,  Last post on Nov 20, 2009 at 6:44 PM

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#930 of 944 Re: big problems [jbl2001] by kiawah Sep 03, 2009 (4:31 pm)
Replying to: jbl2001 (Sep 03, 2009 2:49 pm) any error codes in the computer?   check for leaking intake manifold Replies to this message: jbl2001 (Sep 05, 2009 8:26 pm) kiawah (Sep 05, 2009 8:35 pm) jbl2001 (Sep 12, 2009 5:03 pm)
#931 of 944 Re: big problems [kiawah] by jbl2001 Sep 05, 2009 (8:26 pm)
Replying to: kiawah (Sep 03, 2009 4:31 pm) nope no lights and the intake manifold is not leaking i had had this truck for 3 years and i don't want toget ride of it u know what i need to check the fuel pressere Replies to this message: kiawah (Sep 05, 2009 8:35 pm) jbl2001 (Sep 12, 2009 5:03 pm)
#932 of 944 Re: big problems [jbl2001] by kiawah Sep 05, 2009 (8:35 pm)
Replying to: jbl2001 (Sep 05, 2009 8:26 pm) I reread your problem symptom, and may have mis-interpreted what you were saying. Explain the 3K rpms statement. Are you saying that you are in park and starting it and rev it to 3K and it stumbles (no load condition).....or does it run okay at low rpm and low load?   Or is the situation that you are really trying to accelerate fast (at say 30-40 mph and the car isn't able to accelerate (high load situation).   If it is the later, you could have a bad fuel pump, very common. Replies to this message: jbl2001 (Sep 12, 2009 5:03 pm)
#933 of 944 Re: big problems [kiawah] by jbl2001 Sep 12, 2009 (5:03 pm)
Replying to: kiawah (Sep 05, 2009 8:35 pm) just to let u know what was going on with my suburban it was the fuel pump
#934 of 944 fuel pressure regulator by tkdfan Sep 14, 2009 (1:13 pm)
my mechanic has diagnosed my very-hard-to-start 1999 gmc suburban problem as bad fuel pressure regulator. He has quoted 7 hours and $1100 for the job (r&r upper intake, associated gaskets, nipples, oil change, etc). Labor rates can vary, but is the amount of hours about right? i've seen posts that this job should take much much less, but I think those engines have the FPR mounted outside the engine. Been doing business with these guys for 5+ years and never did me wrong, but appreciate your impressions on this.
#935 of 944 2002 Suburban Dome lights/ door lights not working by rgerber Sep 22, 2009 (6:58 am)
2002 Suburban Dome lights/ door lights not working. I have checked the fuse and replaced the headlight switch and the lights still do not work. I took one of the dome lights down and put 12 volts on it and all the lights worked. I suspect there is a bad relay somewhere but I can not find it. Thanks, Bob Replies to this message: kiawah (Sep 22, 2009 7:52 am)
#936 of 944 Re: 2002 Suburban Dome lights/ door lights not working [rgerber] by kiawah Sep 22, 2009 (7:52 am)
Replying to: rgerber (Sep 22, 2009 6:58 am) I don't have electrical schematics for your year.   But interior lighting in later model Suburbans is controlled by the BCM (Body Control Module), which is basically a computer that manages when lights are turned on and off.....based upon input signals from light switches, timers, door opener, security system, open door switches, etc.   Don't think there is anything else I can offer...
#937 of 944 Bogging at 3000 rpm by therave Oct 18, 2009 (9:23 am)
Can also be a bad fuel filter. Change the filter first unless you know it's good. Your problem may disappear (mine did
#938 of 944 1998 SUBURBAN 4X4 RUNNING ROUGH by bhaight Nov 02, 2009 (9:01 pm)
I had a macanic come over to house and do some work on jimmy. He put in a rear u joint, and a tuneup. Before tune up jimmy ran great but after the tuneup emediatley ran rough really rough, I thought maybe he broke a wire when changeing plugs, so put new plug wires on sure that would solve problem, NOPE! guy came back put little handheld computer on it and gave error code for o2 and missfire on a cylinder and catylitic converter code of some sort, wich i believe are not this problem because regardless of those issue it was running STRONG!. He changed cap and rotor that first day, could he have advanced the timeing some how? It smells like its running rich liked it choked. This rig ran GREAT before tuneup so im not buying an o2 sensor and cat went out a micro second after a tuneup. from the little i know it acts like a timming issue? Replies to this message: kiawah (Nov 03, 2009 4:44 am)
#939 of 944 Re: 1998 SUBURBAN 4X4 RUNNING ROUGH [bhaight] by kiawah Nov 03, 2009 (4:44 am)
Replying to: bhaight (Nov 02, 2009 9:01 pm) Could be.....If you had plugs that weren't firing, they wouldn't be burning the fuel, it would be dumping unburnt/misburnt fuel into the exhaust system, giving out of range o2 readings, and causing the exhaust to smell like it was very rich.   Pull all of the plugs, check to see what each one looks like. Check your wiring sequence, to make sure you didn't get wires crossed to the plugs.

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