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hi guys, well im back again, i seem tobe haven trouble, my 98 deville is running very rough, i smell gas at start up sometimes.and my gas milage has went down to 14.3 mpg from 15.8 mpg, also i hear small popping sound under the hood,when it idles rough or when i press on the gas could this be a (maf sensor) service engine light flashes too (help)

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ok,will check the codes. but what is a FPR. and where can i go to get headbolts. i seen some online between 35-150 dollars any suggestions

Fuel Pressure Regulator

What makes you think you need headbolts???

I see nothing in your preceding post that indicates headbolt problems...

Am I missing something???

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well i had it checked, plus exhaust is pushing my coolant out. so where is the FPR located

Please explain, "exhaust is pushing my coolant out"?

If you are losing coolant through your exhaust, your FPR is the least of your trouble. The FPR is located on the fuel rail, take off the beauty cover its on the drivers side with a vacuum hose attached to it

If its running rough, AND you are losing coolant out of the exhaust, its probably due to a bad head gasket.

Who checked the car and what did they say? This thread turned from a MAF SENSOR to NEEDING HEAD BOLTS, to EXHAUST pushing your COOLANT OUT... vaguely

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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well i posted earlier this year about overheating. and i had it checked out, the cadillac tech said it was the headbolts,cuz the exhausted is pushing the coolant out my surge tank. and this post was about the MAF sensor.but i also wanted to know what type of headbolt should i use, because i found a shop that rebolts the heads for 200.00 on the northstar with the engine inside the car. i thought he was pulling my leg. but i saw it with my own eyes at his shop. he said he does about 5 to 10 a week and its not a long process takes about 6 hours. but i have to supply the bolts. what type should i use (headbolts)

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I would ask him what bolts you need to supply.

This is a first as far I we are concerned, we have never heard of rebolting the head.

Please provide an update and all info on this.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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"Rebolting" the head will do no good. The bolts are not the problem. It's the threads in the block that the bolts thread into. They have pulled and are essentially missing. Sounds like a waste of time and money to me.

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so he makes $1000-$2000 a week doing this huh? Probably putting a can of stop leak in the radiator for $5 and calling it good. You must live in a huge city to have that many cadillacs needing the same work week after week. I live in an area that has well over 500,000 people and people have to post up on craigslist to find caddys with bad headgaskets.

If he really did that many every week, which would be 30-60 hours of just working on northstars, you would think he would have a slew of these "bolts". I think you're getting took.

* 1966 Deville Convertible

* 2007 Escalade ESV Black on Black

* 1996 Fleetwood Brougham Black on Black V4P -Gone
* 1983 Coupe Deville Street/Show Lowrider -Gone

* 1970 Calais 4dr Hardtop GONE
* 2000 Deville DTS - Silver with Black Leather and SE grille GONE
* 1999 Seville STS - Pearl Red GONE

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